AU669713B2 - Constitutive and inducible epidermal vector systems - Google Patents

Description

OPI DATE 29/11/93 APPLN. ID 42213/93 iq OPT DATE 29/11/93 APP00 9 PTNUMBER PCT/ US93/03993 11111111111 11111 li11 111 11111 11111111111 111 1 AOJP DATE 10/02/94 PCT NUMBER PCT/US93/03993 AU9342213 INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (51) International Patent Classification 5 International Publication Number: WO 93/22431 C12N 15/00, 15/12, 15/63 C12N 15/64, 15/85, C12M 3/00 Al (43) International Publication Date: 11 November 1993 (11.11.93) C12M 3/02, 3/04, A61K 31/70 (21) International Application Number: PCT/US93/03993 (81) Designated States: AT, AU, BB, BG, BR, CA, CH, DE, DK, ES, Fl, GB, HU, JP, KP, KR, LK, LU, MG, MN, (22) International Filing Date: 28 April 1993 (28.04.93) MW, NL, NO, PL, RO, RU, SI, SE, UA, European patent (AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE), OAPI patent (BF, BJ, CF, CG, Priority data: CI, CM, GA, GN, ML, MR, NE, SN, TD, TG).

07/876,286 30 April 1992 (30.04.92) US Published (71) Applicant: BAYLOR COLLEGE OF MEDICINE [US/ With international search report.

US]; One Baylor Plaza, Houston, TX 77030 (US).

(72) Inventors: ROOP, Dennis, R. 2331 Bellefontaine, Houston, TX 77030 ROTHNAGEL, Joseph, A. 5427 Queensloch Drive, Houston, TX 77096 GREEN- f HALGH, David, A. 7423 Brompton, Houston, TX 77025 j j (74) Agent: PAUL, Thomas, Fulbright Jaworski, 1301 McKinney, Suite 5100, Houston, TX 77010-3095 (US).

(54)Title: CONSTITUTIVE AND INDUCIBLE EPIDERMAL VECTOR SYSTEMS (57) Abstract A loricrin constitutive vector for efficient expression of a nucleic acid sequence in epidermal cells comprising the 5' flanking region of the loricrin gene, said flanking region containing a TATA box, a cap site and a first intron and intron/exon boundary all in appropriate sequential and positional relationship for expression of a nucleic acid cassette, a 3' flanking sequence of the loricrin gene and a linker containing a unique restriction endonuclease site at the location of the start and stop codon. Said linker connecting the 5' flanking region to the 3' flanking sequence and said linker further providing a position for inserting the cassette. The cassette contains the specific nucleic acid sequence to be expressed. Also, there is a keratin K6 inducible vector for regulating expression of a nucleic acid sequence in epidermal cells comprising the 5' flanking region of the keratin K6 gene, said flanking region including the TATA box, a cap site and the first intron and intron/exon boundary all in sequential and positional relationship for expression of a nucleic acid cassette, a 3' flanking sequence of the keratin K6 gene, and a polylinker having a plurality of restriction endonuclease sites. The polylinker connects the 5' flanking region to the 3' flanking sequence and further provides a position for insertion of the cassette. The keratin K6 and loricrin vectors can be further regulated by the addition of a Vitamin D regulatory element. The vectors can be used in a bioreactor for generating a variety of products including proteins, polypeptides or antisense RNAs. The vectors can also be used for gene therapy in treatment of a variety of diseases in animals and humans including wound healing, surgical incisions, skin ulcers, psoriasis and skin cancer, and in vaccination.

I

I--r I I WVO 93/22431 IPCI/iS93/03993 -1- CONSTITUTIVE AND INDUCIBLE EPIDERMAL VECTOR SYSTEMS The invention was partially supported by a grant from the United States government under AR40240 awarded by the National Institutes of Health. The government has certain rights in this invention, FIELD OF THE INVENTION The present invention relates generally to expression vectors for use in expressing proteins and polypeptides in epidermal cells. More particularly it relates to a constitutive vector consisting of the loricrin gene promoter, its 5' flanking region, its 5' transcribed but untranslated region, its intron, its 3' transcribed but untranslated region, its contiguous non-coding DNA containing the gene's natural transcriptional termination region and its 3' flanking region. It further relates to an inducible vector consisting of the K6 keratin gene promoter, its flanking region, its 5' transcribed but untranslated region, its first intron, its 3' transcribed but untranslated region, its contiguous non-coding DNA containing the gene's natural transcriptional termination region and its 3' flanking region. Additionally it relates to the treatment of disease using the constitutive and inducible vectors.

BACKGROUND OF THE INVENTION The skin is the largest organ in the human body and, due to its accessibility, it is an attractive target for gene therapy. The outer layer of the skin is called the epidermis, and it is particularly attractive since epidermal cells can be grown in vitro from normal and affected patients, I L \VO 93/22431 PC'T/US93/03993 -2are easily transformed genetically by vectors, and can be readily reintroduced by autografting. Previous studies investigating the feasibility of using epidermal cells for gene therapy have only considered this ex vivo approach. These investigations utilized retroviral vectors and their promoters to introduce and express foreign genetic material in epidermal cells. Even though the epidermis is avascular, these studies demonstrated that proteins expressed in the epidermis were able to traverse the epidermal-dermal barrier and achieve systemic distribution (Morgan et al., Science, Vol. 237, pp. 1476-1479, (1987) 'Fenjves et al., PNAS USA, Vol.

86, pp. 8803-8807, (1989); Garlick et al., J. Invest. Dermatol., Vol. 97, pp.

824-829, (1991)). The accessibility of the epidermis makes it suitable for other routes of vector delivery that do not require an ex vivo approach, a gene gun (Sanford et al., Techniques, Vol. 3, pp. 3-16, (1991); Williams et al., PNAS USA, Vol. 88, pp. 2726-2730, (1991); Johnstone et al., In Vitro Cell Dev. Biol., Vol. 27, pp. 11-14, (1991)). In addition, novel vector systems derived from genes normally expressed at high levels in epidermal cells, could prove optimal for achieving efficient, as well as regulated, expression of exogenous DNA. These vector systems are the subject of this invention.

The epidermis is a continuously regenerating stratified squamous epithelium. Differentiated epidermal cells are the progeny of proliferative cells located in the basal cell layer and there is substantial evidence suggesting that the regeneration process occurs in proliferative units composed of slowly cycling, self-renewing stem cells, proliferative but nonrenewing transit amplifying cells, and post-mitotic maturing epidermal cells (Iversen, et al., Cell Tissue Kinet., Vol. 1, pp. 351-367, (1968); MacKenzie, et al., Nature, Vol. 226, pp. 653-655, (1970); Christophers, et al., J. Invest. Dermatol., Vol. 56, pp. 165-170, (1971); Potten, In Stem Cells: Their Identification and Characterization, pp. 200-232, (1983); Cotsarelis, et al., Cell, Vol. 61, pp. 1329-1337, (1990)). The maturation I ~-I \VO 93/22431 W /CT! US93/03993 -3process (terminal differentiation) is initiated when epidermal cells withdraw from the cell cycle and migrate from the basal layer into the spinous layer. Maturation continues as spinous cells migrate into the granular layer and terminates with the formation of the stratum corneum.

Morphological and biochemical studies have shown that terminal differentiation occurs in stages. (Matoltsy, J. Invest. Dermatol., Vol. pp. 127-142, (1975)). Keratins K5 and K14 are major products of basal epidermal cells (Woodcock-Mitchell, et al., J. Cell Biol., Vol. 95, pp. 580- 588, (1982)). These proteins assemble into 10 nm filaments (intermediate filaments and, together with microtubules (tubulin) and microfilaments (actin), comprise the cytoskeleton of epidermal cells (Steinert, et al., Cell, Vol. 42, pp. 411-419, (1985)). One of the earliest changes associated with the commitment to differentiation and migration into the spinous layer is the induction of another differentiation-specific pair of keratins (K1 and K10). IF containing K1 and K10 replace those containing K5 and K14 as the major products of cells in the spinous layer (Woodcock-Mitchell, et al., J. Cell Biol., Vol. pp. 580-588, (1982); Roop, et al., Proc. Natl. Acad. Sci., USA, Vol. 80, pp.

716-720, (1983); Schweizer, et al, Cell, Vol. 37, pp. 159-170, (1984)). The keratin IF formed by these proteins assemble into bundles. In the granular layer, another high molecular weight non-IF protein is synthesized, which is processed into filaggrin, and is thought to promote keratin filament aggregation and disulfide-bond formation (Dale, et al., Nature, Vol. 276, pp. 729-731, (1978); Harding, et al., J. Mol.

Biol., Vol. 170, pp. 651-673, (1983)). In the final stage of epidermal cell maturation, transglutaminase catalyzes the crosslinking of involucrin and loricrin, by the formation of (y-glutamyl) lysine isopeptides, into a highly insoluble cornified envelope which is located just beneath the plasma membrane (Rice and Green, Cell, Vol. 11, pp. 417-422, (1977); Mehrel, et al., Cell, Vol. 61, pp. 1103-1112, (1990)).

-I

WO 93/22431 PCT/US93/03993 Genes or cDNAs encoding the major keratins expressed in epidermal cells have now been cloned: K5 (Lersch, et al., Mol. and Cell Biol., Vol. 8, pp. 486-493, (1988), K14 (Marchuk, et al., Proc. Natl. Acad.

Sci, USA, Vol. 82, pp. 1609-1613, (1985); Knapp, et al., J. Biol. Chem, Vol.

262, pp. 938-945, (1987); Roop, et al., Cancer Res., Vol. 48, pp. 3245-3252, (1988), K1 (Steinert, et al., J. Biol. Chem., Vol. 260, pp. 7142-7149, (1985) and K10 (Krieg, et al., J. Biol. Chem., Vol. 260, pp. 5867-5870, (1985)).

Northern blot analysis and in situ hybridization studies suggest that keratin genes K5 and K14 are predominantly transcribed in the proliferating basal layer and transcription of keratin genes K1 and K10 is induced as cells migrate into the spinous layer (Lersch, et al., Mol. and Cell Biol., Vol. 8, pp. 486-493, (1988); Knapp, et al., J. Biol. Chem, Vol.

262, pp. 938-945, (1987); Roop, et al., Cancer Res., Vol. 48, pp. 3245-3252, (1988)). Genes encoding rat (Haydock, et al., J. Biol. Chem., Vol. 261, pp.

12520-12525, (1986)) and mouse (Rothnagel, et al., J. Biol. Chem., Vol.

262, pp. 15643-15648, (1987)) filaggrin have now been identified and in situ hybridization experiments have confirmed that transcription of this gene is restricted to the granular layer (Rothnagel, et al, J. Biol. Chem., Vol. 262, pp. 15643-15648, (1987); Fisher, et al. J. Invest. Dermatol., Vol.

88, pp. 661-664, (1987)). To date, loricrin is the only gene encoding a component of the cornified envelope to be studied at the molecular level by in situ hybridization and transcripts of this gene are restricted to the granular layer (Mehrel, et al., Cell, Vol. 61, pp. 1103-1112, (1990)).

Since the genes encoding the structured proteins described above are expressed at very high levels, i.e. their individual transcripts represent 5-10% of the total messenger RNA in epidermal cells, their regulatory regions could be utilized in the construction of vectors to direct efficient expression of exogenous DNA in epidermal cells. In particular, efforts have focused on the gene encoding loricrin, a major keratinocyte cell envelope protein (Mehrel et al., Cell, Vol. 61, pp. 1103-1112, (1990)).

I- WO 93/22431 /2CI'/US93/03993 Although this gene is normally only expressed in the most differentiated layers of the epidermis, the present invention demonstrates that it possible to remove sequences that normally restrict expression of the loricrin gene in undifferentiated cells and achieve high levels of expression in undifferentiated epidermal cells (greater than the viral promoter of Thus, this vector is constitutively expressed in epidermal cells at all differentiation states.

In addition to the constitutive vector, the present invention takes advantage of the expression characteristics of another gene encoding the K6 keratin to construct an inducible vector. The K6 gene is normally never expressed in the epidermis, but it can be induced under hyperproliferative conditions such as wound healing (Weiss, et al., J. Cell Biol., Vol. 98, pp. 1397-1406, (1984); Nakazawa, et al., J. Cell Biol., Vol.

103, pp 561a, (1986); Stoler, et al., J. Cell Biol., Vol. 107, pp. 427-446, (1988) and topical application of retinoic acid (Rosenthal et al., J. Invest.

Dermatol., Vol. 95, pp. 510-515, (1990)).

SUMMARY OF THE INVENTION An object of the present invention is a loricrin constitutive vector for efficient expression of nucleic acid sequences in epidermal cells.

An additional object of the present invention is a keratin K6 inducible vector for regulated expression of nucleic acid sequences in epidermal cells.

Another object of the present invention is an in vivo method of transducing epidermal cells with a constitutive or inducible vector.

A further object of the present invention is a bioreactor for producing proteins and polypeptides.

An additional object of the present invention is an enhanced method of wound healing or healing of surgical incisions.

Il r s WO 93/22431 PCF/US93/03993 -6- Another object of the present invention is a method of treating skin ulcers.

An additional object of the present invention is a method of treating psoriasis.

A further object of the present invention is a method of treating cancer.

Thus, in accomplishing the foregoing objects, there is provided in accordance with one aspect of the present invention, a loricrin constitutive vector for efficient expression of nucleic acid sequences in epidermal cells, comprising a 5' flanking region of the loricrin gene, said flanking region including a TATA box, a cap site and a first intron and an intron/exon boundary, all in appropriate sequential and positional relationship for expression of a nucleic acid cassette; a 3' flanking sequence of the loricrin gene; and a linker having a unique restriction endonuclease site at the location of the start and stop codon, said linker connecting the 5' flanking region to the 3' flanking sequence and said linker further providing a position for inserting the nucleic acid cassette which includes the specific nucleic acid sequence to be expressed.

In specific embodiments of the present invention, the loricrin constitutive vector has a 5' flanking region of approximately 1.5 kb, an intron of approximately 1.1 kb and a 3' flanking sequence of approximately 2.1 kb. In specific embodiments of the present invention, the loricrin constitutive vector also includes a poly-linker.

An alternative embodiment of the present invention is a keratin K6 inducible vector for regulated expression of a nucleic acid sequence in epidermal cells, comprising a 5' flanking region of the keratin K6 gene, said flanking region including a TATA box, a cap site, a first intron and an intron/exon boundary, all in sequential and positional relationship for expression of a nucleic acid cassette; a 3' flanking sequence of the keratin K6 gene; and a poly-linker having a plurality of restriction endonuclease

I

WO 93/22431 PCT/US93/03993 -7sites, said poly-linker connecting the 5' flanking region to the 3' flanking sequence and further providing a position for insertion of the nucleic acid cassette which includes the specific nucleic acid sequence to be expressed.

In specific embodiments of the present invention, the keratin K6 inducible vector, 5' flanking region of approximately 8.0 kb, an intron and intron/exon boundary of approximately 0.56 kb and the 3' flanking sequence of approximately 1.2 kb.

In the present invention, the restriction endonuclease sites in the linker or poly-linker are selected from the group consisting of Cla I, Not I, Xma I, Bgl II, Pac I, Xho I, Nhe I and Sfi I.

In one embodiment of the present invention, the nucleic acid cassette, of the constitutive or inducible vectors, contains a sequence coding for a protein, polypeptide or anisense RNA.

In specific embodiments of the present invention, there is a bioreactor comprising transduced epidermal cells including either the loricrin constitutive or keratin K6 inducible vectors. The bioreactor can produce a variety of compounds selected from proteins, polypeptides, antisense RNA.

In specific embodiments of the present invention, the loricrin constitutive or keratin K6 inducible vectors are used for the treatment of wounds, surgical incisions, psoriasis, skin ulcers and cancer.

The method of the present invention can also be used for vaccination by transducing epidermal cells with a loricrin constitutive or keratin K6 inducible vector having proteins or polypeptides which induce an immunological response.

Another embodiment of the present invention is the nucleotide sequences for the loricrin gene and loricrin constitutive vector.

Another embodiment of the present invention is the nucleotide sequences for the keratin K6 gene and keratin K6 inducible vector.

WO 93/22431 IPCT/LS93/03993 -8- Other and further objects, features and advantages will be apparent from the following description of the presently preferred embodiments of invention which are given for the purposes of disclosure when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic drawing of the mouse loricrin gene and the constitutive epidermal vector derived from its regulatory sequences.

Figure 2 shows the expression characteristics of the constitutive epidermal vector in undifferentiated and differentiated epidermal cells utilizing a reporter gene encoding chloramphenicol acetyl transferase

(CAT).

Figure 3 shows the expression characteristics of the constitutive epidermal vector in vivo utilizing a reporter gene encoding E. coli Figure 4 demonstrates the suppression by Vitamin D, of a novel negative regulatory element from the human K1 keratin gene (HK1.NRE).

Figure 5 is a schematic representative of the constitutive epidermal vector which can be suppressed by Vitamin D, via insertion of the HK1.NRE.

Figure 6 is a schematic drawing of a derivative of the mouse K6 keratin gene (BCM-MK6(A)-HK1).

Figure 7 shows the expression characteristics of BCM-MK6(A)-HK1 in transgenic animals.

Figure 8 is a schematic drawing of the mouse K6 keratin gene and the proposed construction of an inducible epidermal vector from its regulatory sequences.

Figure 9 is a schematic representative of the inducible epidermal vector which can be suppressed by Vitamin D, via insertion of HK1.NRE.

WVO 93/22431 PCr/US93/03993 -9- The drawings are not necessarily to scale, and certain features of the invention may be exaggerated in scale and shown in schematic form in the interest of clarity and conciseness.

DETAILED DESCRIPTION OF THE INVENTION It will be readily apparent to one skilled in the art that varying substitutions and modifications may be made to the invention disclosed herein without departing from the scope and spirit of the invention.

The term "transformed" as used herein refers to the process or mechanism of inducing changes in the characteristics (expressed phenotype) of a cell by the mechanism of gene transfer whereby DNA is introduced into a cell in a form where it expresses a specific gene product or alters expression of endogenous gene products.

The term "transduction" as used herein refers to the process of introducing a DNA expression vector into a cell. Various methods of transduction are possible, including microinjection, CaPO 4 lipofection (lysosome fusion), use of a gene gun and DNA vector transporter.

The loricrin constitutive vector and the keratin K6 inducible vector can be transduced into the squamous epithelia cells by any of the variety of ways described above. The types of epithelia cells include epidermis, oral, esophageal, vaginal, tracheal, corneal and other squamous epithelia.

They are transduced by contacting the vector with the cells. In the preferred embodiment this includes using a gene gun or DNA vector transporter.

The term "DNA vector transporter" as used herein refers to those molecules which bind to DNA vectors and are capable of being taken up by epidermal cells. DNA transporter is a molecular complex capable of non-covalent binding to DNA and efficiently transporting the DNA through the cell membrane. Although not necessary, it is preferable that the transporter also transport the DNA through the nuclear membrane.

WO 93/22431 PCT/US93/03993 The term "nucleic acid cassette" as used herein refers to the genetic material of interest which can express a protein polypeptide or RNA and which is capable of being incorporated into the epidermal cells. The nucleic acid cassette is positionally and sequentially oriented within the keratin K6 inducible vector or the loricrin constitutive vector such that thei aucleic acid in the cassette can be transcribed into RNA or antisense RNA and, when necessary, translated into proteins or polypeptides in the transformed epidermal cells. A variety of proteins and polypeptides can be expressed by the sequence in the nucleic acid cassette in the transformed epidermal cells. These proteins or polypeptides which can be expressed include hormones, gro-'rth factors, enzymas, clotting factors, apolipoproteins, receptors, drugs, tumor antigens, viral antigens, parasitic antigens and bacterial antigens. Specific examples of these compounds include proinsulin, insulin, growth hormone, insulin-like growth factor I, insulin-like growth factor II, insulin growth factor binding protein, epidermal growth factor TGF-a, dermal growth factor PDGF, angiogenesis factors, acid fibroblast growth factor, basic fibroblast growth factor and angiogenin for instance, matrix proteins such as Type IV collagen, Type VII collagen, laminin and protoins from viral, bacterial and parasitic organisms which can be used to induce immunologic response.

The genetic material which is incorporated into the epidermal cells using the loricrin constitutive vector or the keratin K6 inducible vector includes DNA not normally found in epidermal cells, DNA which is normally found in epidermal cells but not expressed at physiological significant levels, DNA normally found in epidermal cells and normally expressed at physiological desired levels, any other DNA which can be modified for expression in epidermal cells, and any combination of the above.

The term "loricrin constitutive vector" as used herein refers to a vector which can be inserted into epidermal cells and which once inserted, 93/22431 CU/LJS93/03993 -11will express a constitutive a constant level) of protein, polypeptide or antisense RNA from the nucleic acid cassette which is part of the loricrin constitutive vector. The loricrin constitutive vector is used for efficient expression of a nucleic acid sequence in epidermal cells and is comprised of a 5' flanking region of the loricrin gene, said flanking region including a TATA box, a cap site and a first intron and an intron/exon boundary all in appropr'ate sequential and positional relationship for expression of a nucleic acid cassette; a 3' flanking sequence of the loricrin gene; and a linker having a unique restriction endonuclease site at the location of the start and stop codon, said linker connecting the 5' flanking region to the 3' flanking sequence and e~id linker further providing a position for inserting the nucleic acid cassette.

The sequence for the loricrin gene which is used for preparing the loricrin constitutive vector is shown in SEQ. ID No. 1. The loricrin constitutive vector has a 5' flanking region comprising nucleotides 1 to 1540 of SEQ. ID. No. 1; an intron and intron/exon boundary comprisi: nucleotides 1587 to 2677 of SEQ. ID. No. 1, a 3' flanking region comprising nucleotides 4384 to 6530 of SEQ. ID. No. 1; and a linker to be inserted at the unique Cla I site at nucleotides 2700 to 2705 of SEQ. In.

No. 2. The loricrin constitutive vector has a 5' flanking region of approximately 1.5 kb, an intron of approximately 1.1 kb and a 3' flanking sequence of approximately 2.1 kb. The linker of the loricrin constitutive vector can be a poly-linker. The poly-linker includes a plurality of restriction endonuclease sites.

The term "keratin K6 inducible vector" as used herein is a vector which is useful for regulated expression of a nucleic acid sequence in epidermal cells. The keratin K6 inducible vector comprises a 5' flanking region of the keratin K6 gene, said flanking region including a TATA box, a cap site, a first intron and an intron/exon boundary all in sequential and positional relationship for the expression of a nucleic acid cassette; a 3' WO 93/22431 PC/7 US93/03993 -12flanking sequence of a keratin K6 gene; and a poly-linker. The poly-linker includes a plurality of restriction endonuclease sites, connects the flanking region to the 3' flanking sequence and further provides a position for insertion of the nucleic acid cassette.

The partial sequence for the keratin K6 gene which is used for preparing the keratin K6 inducible vector is shown in schematic form in Figure 8 and the sequence is shown in SEQ. ID No. 3. The keratin inducible vector has a 5' flanking region which extends from a unique Xho I site up to nucleotide 360 of SEQ. ID. No. 3; an intron and intron/exon boundary comprising nucleotides 928 to 1494 of SEQ. ID. No.

3; a 3' flanking region which- extends from nucleotide 4740 of SEQ. ID.

No. 3 to a unique 3' Xho I site; and a poly linker inserted between nucleotides 1504 to 1509 of SEQ. ID. No. 3.

The keratin K6 inducible vector has a 5' flanking region of approximately 8.0 kb, an intron and intron/exon boundary of approximately 0.56 kb and a 3' flanking sequence of approximately 1.2 kb.

The restriction endonuclease sites found in the linker and poly-linker of the loricrin and keratin K6 vectors can be any restriction endonucleases which will allow insertion of the nucleic acid cassette. In the preferred embodiment they are usually selected from the group consisting of Cla I, Not I, Xma I, Bgl II, Pac I, Xho I Nhe I and Sfi I.

One skilled in the art will readily recognize that there are a variety of ways to introduce the loricrin constitutive vector or the keratin K6 inducible vector into epidermal cells. The vectors can be inserted either in vivo or ex vivo. The mode of insertion will, to a certain degree, determine the available methods for the insertion.

One embodiment of the present invention includes a bioreactor. A bioreactor is comprised of transformed epidermal cells which contain the loricrin constitutive vector or contain the keratin K6 inducible vector.

Once the vector is inserted in the epidermal cells, the epidermal cells will \VO 93/22431 PCf/US93/03993 -13express the nucleic cassette and produce the protein, polypeptide or antisense RNA of interest, This can be done either in vivo or ex vivo.

Any compound which can be encoded in, and expressed by, the nucleic acid cassette can be produced by the bioreactor.

One method for ex vivo introduction of the loricrin constitutive vector or the keratin K6 inducible vector into epidermal cells includes a cotransfection of the vector with a selectable marker. The selectable marker is used to select those cells which have become transformed. The cells can then be used in any of the methods described in the present invention.

One specific embodiment of the present invention is a method for the enhanced healing of a wound or surgical incision. This method comprises the in vivo transduction of epidermal cells with a loricrin constitutive vector or a keratin K6 inducible vector. In either case, the nucleic acid cassette of said vector contains a nucleic acid sequence for a growth factor.

In the preferred embodiment for the treatment of wounds or surgical incisions, a plurality of vectors are introduced into the epidermal cells. In the plurality of vectors, the cassette of at least one vector contains a nucleic acid sequence for an epidermal growth factor (TGF-a), the cassette of at least one vector contains a dermal growth factor (PDGF), a cassette of at least one vector contains a nucleic acid sequence for a matrix protein to anchor the epidermis to the dermis, and a cassette of at least one vector contains a nucleic acid sequence for an angiogenesis factor. The sequence for matrix proteins can be selected from any sequences useful for the anchoring of the epidermis to the dermis but are usually selected from the group consisting of Type IV collagen, laminin, nidogen, and Type VII collagen. The angiogenesis factor is usually selected from the group consisting of acid fibroblast growth factor, basic fibroblast growth factor and angiogenin. The combination of the vectors WO 9 3/224311 PCII US93/03993 -14provides all of the necessary elements for quick and rapid enhancement of healing of wounds or surgical incisions. This procedure is very helpful in the case of plastic or reconstructive surgery. Furthermore, skin ulcers can be treated by following similar procedures as described for wound healing or surgical incision. These procedures are useful in animals and humans.

In the ex vivo approach for treating or healing wounds, surgical incisions and skin lesions, the vectors are first transduced into the epidermal cells ex vivo. The transformed epidermal cells are transplanted onto the animal or human to be treated.

Another embodiment of the present invention is a method for treating psoriasis. In this method, epidermal cells are transduced in vivo with a loricrin constitutive vector or a keratin K6 inducible vector. A nucleic acid cassette in said vector contains a nucleic acid sequence for a protein or polypeptide selected from the group consisting of TGF-P, a soluble form of cytokine receptor, and an antisense RNA. The cytokine receptor can be selected from the group consisting of IL-1, IL-6 and IL-8.

The antisense RNA sequence is selected from the group consisting of TGF-a, IL-1, IL-6 and IL-8.

In another embodiment of the present invention there is a method of treating cancer. This method comprises the steps of in vivo transduction of epidermal cells with a loricrin constitutive vector or a keratin K6 inducible vector into epidermal cells. The nucleic acid cassette of either vector contains the nucleic acid sequence coding for antisense RNA for the E6 or E7 gene of the human papilloma virus or coding for the normal p53 protein. Although the example given is for skin cancer, this same approach is used for cancers occurring in other squamous epithelial, since the constitutive and inducible vectors will also function in these tissue types.

\VO 93/22431 PCT/US93/03993 It has been found that either the keratin K6 inducible vector or the loricrin constitutive vector can be further regulated by introducing the Vitamin D regulatory element into the vector. The Vitamin D regulatory element is usually introduced into the 3' flanking sequence. In the present invention, the Vitamin D regulatory element is from the human K1 keratin gene. With the Vitamin D regulatory element in the vector, the expression of the nucleic acid cassettes can be suppressed by Vitamin D, a commonly used substance in animals and humans.

An additional embodiment of the present invention is a method for vaccination comprising the step of in vivo introduction of a loricrin constitutive vector into epidermal cells. The nucleic acid cassette in the vectors usually codes for a polypeptide which induces an immunological response. An example of this is the viral capsid protein from the human papilloma virus. One skilled in the art will readily recognize that any other variety of proteins can be used to generate a immunologic response and thus produce antibodies for vaccination.

The following examples are offered by way of illustration and are not intended to limit the invention in any manner.

EXAMPLE 1 Isolation of the Mouse Loricrin Gene Although it is a major keratinocyte cell envelope protein, loricrin was not identified until 1990 (Mehrel, et al., Cell, Vol. 61, pp. 1103-1112, (1990)). The primary sequence of the loricrin protein was deduced from the overlapping cDNA clones described in Mehrel, id. To obtain the full gene, the cDNA clones were used to screen an EMBL-3 Balb/c mouse genomic library. The gene encoding loricrin was located within two Barn HI fragments of 3.4 and 3.1 kb. The coding sequence within this genomic fragment is identical to the cDNA sequences and is not interrupted by introns. There is, however, an intron in the 5' non-coding region that is \VO 93/22431 PCT/US93/03993 -16approximately 1.1 kb in length. In addition to the intron and coding sequence, there is approximately 1.5 kb of 5' flanking sequence and 2.1 kb of 3' flanking sequence.

EXAMPLE 2 Construction and characterization of a constitutive epidermal expression vector from the mouse loricrin gene Although all of the regulatory elements of the loricrin gene have not been identified, a functional loricrin constitutive expression construct was designed as follows. Briefly, polymerase chain reaction (PCR) technology was used to delete the loricrin coding region, leaving the and 3' flanking regions, 5' and 3' non-coding regions and the intron (Figure A unique Cla I restriction site was engineered at the start (ATG) and stop (TAA) codons to allow easy insertion of exogenous gene cassettes. To assess the expression characteristics of this vector, a reporter gene, the bacterial gene encoding chloramphenicol acetyl transferase (CAT), was inserted into the Cla I site. The expression vector was analyzed by transient transfection into primary mouse epidermal cells.

Positive (pSV2.CAT, lane 1) and negative (pA10.CAT, lane 2) control vectors were included in the assay (Figure The loricrin expression vector had high activity in undifferentiated (low Ca" medium, lane 3) and differentiated (high Ca" medium, lane 4) epidermal cells, surpassing levels obtained with the strong promoter of the virus SV40. This result was unexpected, since previous in vivo studies had demonstrated that the loricrin gene was only expressed at a late stage of epidermal differentiation (Mehrel, et al., Cell, Vol. 61, pp. 1103-1112, (1990)), and indicates that additional flanking sequences are required to suppress loricrin expression in undifferentiated epidermal cells.

To analyze the expression characteristics of the loricrin vector in vivo, the bacterial gene encoding p-galactosidase was inserted into the Cla WO 93/22431 /CI'/US93/03993 -17- I site. The P-galactosidase gene has frequently been used as a reporter gene to assess targeting specificity (MacGregor, et al., In: Methods in Molecular Biology, Vol. 7, pp. 217-235, (1991)). This construct was designated pML-P-gal and was used in the production of transgenic mice.

This construct was digested with Apa I and subjected to preparative agarose gil electrophoresis to purify the pML-P-gal expression construct away from plasmid sequences (pGEM72) which might interfere with expression. The separated expression construct sequences were purified and recovered using NA 45 DEAE membrane (Schleicher Schuell).

DNA was precipitated and resuspended at 1-3 ng/ul. ICR outbred female mice (Sasco) were given PMS and HCG to stimulate superovulation, mated to FVB males (Taconic) and resulting one-cell fertilized embryos were collected from the oviducts. DNA was micro-injected into the pronuclei and the embryos were surgically transferred to pseudopregnant recipient females (the result of mating ICR females with vasectomized B,DF, males (Taconic). Normal gestation and birth was allowed to continue and at approximately three weeks of age the pups were screened for evidence of the transgene using total genomic DNA extracted from the tail.

PCR analysis was performed on the extracted tail using oligo primers specific for P-galactosidase. Animals positive for the transgene were further analyzed to assess the expression characteristics of pML-Pgal. This was done by removing part of the ear and incubating the tissue in a staining solution containing X-gal. This was done by removing part of the ear and incubating the tissue in a staining solution containing Xgal. Typical results are seen in Figure 3 where a PCR positive animal expressed high levels of P-galactosidase in the epidermis (Figure 3b) while a PCR negative animal shows no such staining (Figure 3a) indicating that endogenous murine P-galactosidase is not expressed at sufficient levels in the epidermis to cause false positives in this assay. Intense X-gal staining WO 93/22431 PCI/US93/03993 -18was detected in the basal compartment as well as the suprabasal, more differentiated layers.

To analyze the expression characteristics of the loricrin vector in vivo, the bacterial gene encoding p-galactosidase was inserted into the Cla I site. This data is shown in Figure 3. This observation indicates that the loricrin expression vector is useful as a constitutive vector to direct the efficient expression of exogenous DNA in both the undifferentiated and differentiated compartments of the epidermis.

EXAMPLE 3 Utilization of a novel Vitamin D, responsive element to modulate expression levels in the epidermis This example demonstrates that a novel negative regulatory element from the human K1 keratin gene (HK1.NRE) is able to suppress a heterologous promoter in response to Vitamin The HK1.NRE is nucleotides in length (see Figure PCR technology was used to generate Barn HI and Bgl II sites at opposite ends of this fragment. This facilitates generating multiple copies of this fragment since ligation and digestion with Bam HI and Bgl II will select for oligomers which have ligated head to tail. Four tandem copies of the HK1.NRE were inserted into the Bgl II cloning site of pAlO.CAT. In the absence of Vitamin D, this construct is highly expressed when transfected into primary mouse epidermal cells (Figure The addition of increasing concentrations of Vitamin D, to the culture medium completely suppresses transcription of this heterologous promoter. Thus, by using Vitamin the activity of the expression vector is modulated. Figure 5 shows a schematic representative of a derivative of the loricrin constitutive epidermal vector which contains the HK1.NRE in its 3' flanking region. The activity of this vector within epidermal cells NVO 93/2231 PCI/US93/03993 -19can be suppressed by topical application of Vitamin or an analogue, to the skin.

EXAMPLE 4 Isolation and characterization of a Mouse K6 Keratin Gene Several laboratories have reported that keratin K6 is not expressed in normal epidermis, but is expressed under hvperproliferative conditions such as wounding (Weiss, et al., J. Cell Biol., Vol. 98, pp. 1397-1406, (1984); Nakazawa, et al., J. Cell Biol., Vol. 103, pp. 561a (1986); Stoler, et al., J. Cell Biol., Vol. 107, pp. 427-446, (1988)) or topical application of retinoic acid (Rosenthal, et al., J. Invest. Dermatol., Vol. 95, pp. 510-515, (1990). Although K6 expression does not occur in interfollicular epidermis, it does occur in hair follicles (Nakazawa, et al., J. Cell Biol., Vol. 103, pp. 561a, (1986)). Recent results indicate that there are two K6 cDNAs that differ in sequence in only a few nucleotides. These cDNA clones have been used to differentially screen a EMBL 3 Balb/c mouse genomic library and isolate two distinct K6 genes. These genes are closely linked within genomic DNA, arranged in tandem. They have almost identical 3' halves, including identical 3' non-coding and flanking regions.

Interestingly, the 5' halves of the 2 genes differ greatly in their restriction fragment patterns. Sequence analysis of the region near the ATG shows many differences between the two genes. The sequence of one of these genes, designated BCM-MK6(A), is shown in SEQ. ID. No. 3. To determine the expression characteristics of this gene in vivo in transgenic mice, PCR technology was used to modify a 13.5 kb Xho I fragment containing BCM-MK6(A). Nucleotides encoding the C-terminal region of the K6 protein were deleted and nucleotides encoding the amino acid sequence SEQ. ID. No. 4 were inserted. These amino acids are at the Cterminal of human keratin K1 (Johnson, et al., PNAS, USA, Vol. 82, pp.

1896-1900, (1985)). A schematic representative of this derivative of the WO 93/22431 PC/I/US93/03993 mouse K6 gene (BCM-MK6(A)-HK1) is shown in Figure 6. Antisera have previously been generated against the HK1 C-terminal peptide (Rosenthal, et al., J. Invest. Dermatol., Vol. 95, pp. 510-515, (1990)). These antibodies are raonospecific for this human K1 peptide and allow expression of the derivatized BCM-MK6(A)-HK1 transgene to be followed against the expression pattern of the endogenous mouse K6 genes.

The derivatized mouse K6 transgene shown in Figure 6 was used in the production of transgenic mice as outlined in Example 2. Mice resulting from the initial injections were screened by PCR analysis for presence of the BCM-MK6(A)-HK1 transgene. Positive founders were initially analyzed for transgene expression as follows. A small ear biopsy was taken and after 48 hours a second biopsy was taken at the same site to score for expression during wound healing. Transgene expression was limited to hair follicles in the initial biopsy and was not present in interfollicular epidermis. Transgene expression was observed in the epidermis in the 48 hour biopsies, but only at the site of wounding. To further confirm the inducibility of the BCM-MK6(A)-HK1 transgene under hyperproliferative conditions, Fl generation offspring from the initial founders were treated topically with the hyperplasiogenic agent 12-0tetradecanoylphorbol-13-acetate. Biopsies were taken before and 48 hours after topical application of this agent. Immunofluorescence was performed on frozen sections of these biopsies with antisera specific for the HK1 peptide. No expression was observed prior to the induction ofhyperplasia, however, the BCM-MK6(A)-HK1 protein was expressed at very high levels in all layers of the epidermis 48 hours after hyperplasia was induced (Figure 7).

WO 93/22431 PCF/US93/03993 -21- EXAMPLE Construction of an inducible epidermal expression vector from the mouse K6 gene (BCM-MK6(A)' Results obtained with the derivative of BCM-MK6(A) (Figure 7) indicate that all of the regulatory sequences required to suppress expression of this gene in normal epidermis and activate its expression under hyperproliferative conditions, such as in wounding healing or experimentally induced hyperplasia, are located within the 13.5 kb Xho I fragment (Figure Therefore, an inducible vector was developed from this fragment. This vector is very useful in gene therapy applications where dosage of pharmaceuticals needs to be regulated. In addition, this vector is ideally suited for wound healing applications since it is induced during the wound healing process but suppressed after healing has occurred. Figure 8 illustrates how a vector is constructed from the BCM- MK6(A) gene. The vector is derived from the 13.5 kb Xho I fragment which contains the entire K6 gene. The same general strategy used in construction of the constitutive epidermal vector (Figure 1) is followed.

The expression vector retains all of the 5' flanking sequences, the 5' noncoding sequences up to but not including the ATG, the first intron including the splice-sites of the intron-exon boundary and all of the 3' non-coding and flanking sequences after the TAA codon. A polylinker is engineered 3' of the first intron to allow easy insertion of exogenous DNA cassettes. These manipulations are performed through the use of PCR technology. Unique Xho I sites are conserved at the ends of the vector to allow easy amplification in pGEM vectors and excision for purification from plasmid sequences. Recent in vivo results indicate that the endogenous human K6 gene is inducible after topical application of alltrans retinoic acid. Further, in vivo mouse experiments suggest that the vector shown in Figure 9 is inducible by topical application of retinoic acid, or an analogue, to the skin.

WO 93/22431 PCT/US93/03993 -22- EXAMPLE6 Construction of a derivative of theinducible epidermal vector which could be suppressed by Vitamin D, Even though the inducible epidermal vector depicted in Figure 8 is suppressed or silent in normal epidermis, it can be accidently induced as a result of injury. Therefore, it is desirable to have an additional suppressor engineered into this construct. In addition, this suppressor is used to more tightly regulate pharmaceutical delivery. This is achieved by insertion of the HK1.NRE described in Figure 4. Figure 9 shows a schematic represent-tive of a derivative of the K6 inducible epidermal vector which contains the HK1.NRE in its 3' flanking region. The activity of this vector within epidermal cells is suppressed by topical application of Vitamin or an analogue, to the skin.

EXAMPLE 7 Utilization of the inducible epidermal vector in wound healing Greater than 3.5 million individuals develop skin ulcers. During normal healing, epidermal cells produce growth factors which affect not only epidermal cells but also cells within the dermis. In addition, epidermal cells synthesize several matrix proteins which provide an anchor to the underlying dermis. Many skin ulcers occur in patients with disorders such as circulatory problems and diabetes, and the normal healing process in impaired. The inducible epidermal vector is used to target the combined expression of growth factors, to accelerate growth of cells in both the epidermal and dermal compartments; matrix proteins, to increase tensile strength; and angiogenesis factors, to improve circulation, in an attempt to improve healing these patients.

\VO 93/22431 PC'/ US93/03993 -23- EXAMPLE 8 Utilization of the constitutive epidermal vector in gene therap approaches to cancer Skin cancer is by far the most common form of cancer with greater than 600,000 new cases reported each year. Several genes have been implicated in causing skin cancer, including loss or mutation of the host cell tumor suppressor gene, p 53 and expression of the E6 and E7 transforming genes of human papilloma virus (HPV). In vitro studies suggest that the normal or wild type p53 gone can revert the phenotype of malignant cells or induce programmed cell death. The constitutive epidermal vector is used to target expression of the normal p53 gene to cause reversion to a non-malignant phenotype or induction of programmed death in vivo. In cancers where HPV is suspected of being the etiological agent, the constitutive vector is used to target expression of antisense RNA specific for the E6 and E7 genes of HPV.

EXAMPLE 9 Utilization of the epidermal vector systems in gene therapy approaches to psoriasis Psoriasis is a common inherited skin disease which affects approximately 4 million individuals in the 20 million world-wide. It is characterized by the presence of inflamed scaly skin. Although the specific defect for psoriasis is not known, inappropriate expression of growth factors, and cytokines appears to be responsible for its pathogenesis. Epidermal vectors are used to inhibit the mitogenic effects of positive growth factors produced in psoriatic lesions by expressing negative growth factors which induce growth arrest of epidermal cells.

The inflammation observed in psoriasis most likely results from inappropriate expression of cytokines. Targeted expression of soluble cytokine receptors prevents stimulation of an inflammatory infiltrate in \VO 93/22431 V 3 3Cr/ S 93/03993 -24this disease. In another approach, antisense RNA is directed against transcripts of positive growth factors or cytokines. These approaches have therapeutic potential for other dermatoses resulting from inflammation.

All patents and publications mentioned in this specification are indicative of the levels of those skilled in the art to which the invention pertains. All patents and publications which are incorporated herein by reference are incorporated to the same extent as if each individual publication was specifically and individually indicated to be incorporated by reference.

One skilled in the art will readily appreciate that Lhe present invention is well adapted to carry out the objects and obtain the ends and advantages mentioned, as well as those inherent therein. The bioreactors, nucleic acid sequences, transformed epidermal cells, loricrin constitutive vector and keratin K6 inducible vector, along with the methods, procedures, treatments, molecules of specific compounds described herein are presently representative of preferred embodiments, are exemplary and are not intended as limitations on the scope of the invention. Changes therein and other uses will occur to those skilled in the art which are encompassed within the spirit of the invention as defined by the scope of the claims.

\O0 93/22431 PC1'/US93/03993 GENERAL INFORMATION: APPLICANT: Roop, Dennis R.

Rothnagel, Joseph A.

Greenhalgh, David A.

(ii) TITLE OF INVENTION: CONSTITUTIVE AND INDUCIBLE EPIDERMAL VECTOR SYSTEMS (iii) NUMBER OF SEQUENCES: 4 (iv) CORRESPONDENCE ADDRESS: ADDRESSEE: Fulbright Jaworski STREET: 1301 McKinney, Suite 5100 CITY: Houston STATE: Texas COUNTRY: U.S.A.

ZIP: 77010-3095 COMPUTER READABLE FORM: MEDIUM TYPE: Floppy disk COMPUTER: IBM PC compatible OPERATING SYSTEM: PC-DOS/MS-DOS SOFTWARE: PatentIn Release Version #1.25 (vi) CURRENT APPLICATION DATA: APPLICATION NUMBER: FILING DATE:

CLASSIFICATION:

(viii) ATTORNEY/AGENT INFORMATION: NAME: Paul, Thomas D.

REGISTRATION NUMBER: 32,714 REFERENCE/DOCKET NUMBER: D-5405 WO 93/22431 WO 9322431P CT/US93/03993 -26- (ix) TELECOMMUNICATION INFORMATION: TELEPHONE: 713/651-5325 TELEFAX: 713/651-5246 TELEX: 762829 INFORMATION FOR SEQ ID NO:l: SEQUENCE CHARACTERISTICS: LENGTH: 6530 base pairs TYPE: nucleic acid STR&NDEDN'ESS: double TOPOLOGY: linear (11) MOLECULE TYPE: DNA (genomic) (iii) HYPOTHETICAL: NO (iv) ANTI-SENSE: NO (xi) SEQUENCE DESCRIPTION: SEQ ID NO:l: GGATCCTGAT ATAGCTGTCT CTTTTGAGAC TATCCCGGGG CCTAGCAAAC ACAGAAGTGG ATGCTCACAG TCP GGATTG GGTGA.ATCAC AGGGCCCCCA ATGTTGGAGC TAGAGAAAGA ACCCAGGGAG CTGGGGGGA'T CACCTGAGTT CATACTGTCC AAACTGAAAC AAGTGGCACA AGTTTCTGAG AGCCAAAGTC TAATCAGGAT CGTTTAGATC ATTAATGCTC CCCCATAATT AAGACAATTT CTGATTAGAA TTATTCTTTC AACACAGCTG GGTGGAACAA GGTTCAACAG TGGTATCTTA ATAGCAACTG AGTTCCAATG ATGAAAGAAA GGAAAAACAC TATGTTCTTC ATACACAGAG GGGGrGCTGCT CTTGGCCCTA GGGTCATCAG AGAACTGAGT AAATCTTATA GGAAAATAGT TAAGATGTCT TCACACACCT CCTTTCCAAT AGGGTTCAAG GGCAGGCATG NVO 93/22431 WO 93/243 I J)CT! US93/03993 -27- ATTGGAAGGA AAAGTGTTCT GTCATGTGAG AAAAGAGCKA AAGTATTAAT ATCACATACT 540 ATGTAGTACA TTCATATTTC ATAACTTCCA TTTTCATGTT TCTGTGAAAT AAATTATAGG 600 ATTCCTGCTT GGTAGACCAA ATGGGGATCA GACAGCTCAA CAATGAACAA GTACTCAGTA 660 ACTGCCCTGT TGGTGGCATT GCATGAACTA CTGTGCTTTG CCCATGGTGA CATAGCTTGA 720 AATAGTAATG GAAGACCTGA ACCCAACTGA GATCTCTAAG TACATTCCAC TCTATGGTGG 780 CATCTCAGAG GTCAGAGTCA CTGTGCAGCG CCATAGGACA TCAGAATCAA AGGGTCATGG 840 TGAAAAGGCT GCCAGGGTCT GTCTTGTTAG TTCTCACCTT TGTAAGTAAA GTCAGTAGTC 900 AGTAACAAAG ATCAAAACAC CTGCTCTCAC AAGGAATAAC TTAAAGTAGA CTAAAGTCAT 960 GCTAGTTACA GTGCTGTCTT TTCCGTGGTA CCATCCCAAA CTGGGAGCTG GGGACTCACG 1020 AACTCTCACA ACCAAT1IAAG TAAGCAGAAC AGAAGCAACC CAATGAAGTG TTCATGAAAC 1080 TGGA.ATGGAG AAATTGTGGC ATAAGAGATG GATTCTAAAA TTTTGAGAAT TTCCAAGATA 1140 ATGAAATTAA AACCAAACAT CAAAATTGGA A.PiGATACAAC TGAACTAGCT TCTATGTCTT 1200 AGACAATGTC TTAGATCTCT AGATTCCGTA AGGCTGCTTC ACAAGTCTGC AACCTAGTCC 1260 TCTAGAATAG CCCTCTGGTT ATGGCACGCA ACCTATACAG AAGTTTTGAA AACAATTTCT 1320 GCCATCCACA CTGCTGGCCA TCTCTAATGA CCAACCTGCT CACTGTTACA TCAGAGAAGT 1380 GGCCAGTCAT ACACCAAACT GCCTATCCCT ATCCCAAGAA TTTGAAATCT TCATGAATGG 1440 GTCAATCCTT CCCCTGCAAT CACAGGGAGG AGGTGCCTGA TCAATAGATG AGTCAGAGCA 1500 GGACAAGAGT ATAAAACACA GGAGCACCAG TGTCCCTCAC ATCAGCATCA CCTCCTTCCC 1560 TCACTCATCT TCCCTGGTGC TTCAGGTAAG TGTGGGCTCT CCTGGCTGTC TOGTCTCTCC 1620 AGTTGGCCTT GCTCAGCTTG CAGAGAGGTT ?JAGGAACAGA GCCTTTCTCC CCTTTGGAAG 1680 WO 93/2243 1 PICT/ US93/03993 -28- GTACTCTGTT CAAATTGAGA AGGGCTTTAG GAAAG;CACTG GGAGAGTGGT AAGCTGGTGC 1740 TGGGCAGATG ATGTGTCTGG TCTTCTGGGC AGAATGTTAA AACTTCACAA AGATATGACT 1800 ATCTCCTACT TCTCTGGCAC CCTGGGAGCT GAGGGTTAGA ATACTGG.ATG ACTGCAGTGG 1860 CAGGCCTCCA TGGGCTGGAT GAACCTTTTG AACCTGCCAG AAGTGGCTGA ATACACT'ATC 1920 AGGAAGGGAG AGGGACGATA AGTUJTAGAA TGGTGCTGAT GGGAGATTTG AGAAGCCACA 1980 AAAACCCAAG CTCTGCTTTA TGAGGGCAGA TGTTCTGACA GATAAATGAC TTGTGAGGTG 2040 CTGAACTACA CAGCTTCCTA TTAGCTACAG CTAATTGGAG TCTACCAAAT TTAGACTCCT 2100 GCATATCTCA AAAAGATGTC TACTTTCTTC TGGTTAGATG TACTGGTCCA AAAGGTTCAG 2160 AGTTCTTCCA TTTGTTTGCA GACAGGACCA CAGTAGAGCT GTCTTGTCTA ATAATTGGCC 2220 CTTGGAGGAT ATCTCACTCA ATAGGACAGA TCAAGAGTTT A.AACTAAGGA CTTTATACAG 2280 GAAATGCTAA TGTCCAAACA AATCTTTTCT TATTGTGCTG GGAGTGGATA AAATCCACGT 2340 GGAATTTTTG CAACTTTCTA CTGAATTTAA AGAATCAGCA CTGGGACTTG GGAGCACCCT 2400 TAGACATGGA GTGTTTATTA ATGTAAGATC AA.AAGCAGGT GG.GAATGTGG GGGTTCTGCT 2460 TCCCAAATCA CATAGTAGAA GAAAGGCAGA GTTGAGGGAA AAGGGGGTCA CTATTAACGG 2520 GACTTTTGAA GAGCTAACC.A GTCCAGGAAT GGAGTCCAGA CACCTAGTCT GCATAAAGCT 2580 AGGAGTCAGA AGTATGTTGG CATGGATGCA TCTGCCACCT TCACAGCGTC CTCTTGCTGC 2640 TGTTGGTCTA ATGTTGCTCT TCTGCTCTTC TTCCAGGGTT CCCCTTCTCC TTAAACAAGA 2700 TGTCTCACCA GAAAAAGCAG CCCACTCCCT GCCCTCCTGT GGGTTGTGGA AAGACCTCTG 2760 GTGGAGGAGG AGGCGGGGC GGCTATTATA GCGGTGGCGG CTCTGG-CTGC GGAGGCGGCT 2820 CATCTGGAGG AGGCTCTAGC TGTGGAGGCG GAGGCGGTGG TTCCTATGGA GGTGGTTCCA 2880 WO 93/22431I PCrIUS93/03993 -29- GCTGCGGCGG TCGAGGCGGC TCCGGTGGG4G GCGTCAAGTA CTCCGGAGGC GGCGGTGGCT 2940 CTAGCTGCG4G CGGCGGCTAC TCCGGAGGCG GTGGTGGCTC TAGCTGCGGC GGTGGCTACT 3000 CGGCGC..ZTCC AGCTGCGGAG GTGGCTACTC CGGAGGCGGC GGCGGCTC(',A 3060 GCTGCGGCGG CGGCAGCTAC TCCGGGGGTG GCTCCAGCTG TGGAGGCGGT GGCGGCTCTG 3120 GTGGGGGCGT CAAGTACTCC GGAGGTGGTG GCGGCGGCGG CTCTAGCTGC GGCGGCGGCT 3180 CCTCCGGGGG CGGCGGCGGC GGCTCCAGCT GCGGAGGCGG ATCAGGAGGC GGCGGCTCCT 3240 ACTGCGGAGG CTCCTCTGGA GGCGGCAGCT CCGGTGGCTG CGGCGGCGGT TCCGGAGGCG 3300 GCAAGTACTC TG4GTG4GCGGCC G4GTGGCTCCA GCTGCGGAGG CGGCTATTCC GGCGGCGGTG 3360 GAAGCAGCGG CGGCTCTAGC TGTG4GCGGCG GCTACTCAGG TGGCGGTGGA TCCAGCTGCG 3420 GCGGCGGCGG CGGCTATTCC GGTGGCGGCG GCACGAGCTG CGGAGGTGGT TCCTCCGGTG 3480 GCGGCGGCGG CGGATCGTCC CAACAGTATC AGTGCCAGAG CTACGGAGGC GGTTCTAGCG 3540 GTGGCTCCAG CTGCGGCGGC GGCTACTCCG GGGGCGGAGG CTCCAGCTGC GGTGGCGGCT 3600 ACTCCGGGGG CGGAGGCTCT AGCTGCGGAG GCGGCTCCTC TGG.TGGTGGC TCCAGTTGCG 3660 GCGGOAGCGG CCGGGG=C TATTCCGGTG GTGGCGGTGG CAGCTGCGGC GGCGGCTCCT 3720 CTGGCGGCGG AGGGGGCTAT TACTCCTCTC AGCAGACCAG TCAGACCTCC TGCGCCCCCC 3780 AGCAGAGCTA CGGAGGGGGC TCTTCCGGAG GAGGTGGTAG CTGTGGAGGT GGCTCCTCTG 3840 GCGGCGGTGG CGGCGGTGGC TGCTACTCCA GOGGTGGTGG CGGCAGCAGC GGTGGCTGCG 3900 GTGGAGGCTA CTCCGGAGGC GGCGGTGGCT GTGGCGGCGG CTCTTCCGGG GG.CAGCGGCG 3960 GTGGCTGCGG AGGTGGCTCT TCCGGAGGCA GCGGCGGTGG CTGCGGAGGA GGCTACTCCG 4020 GAGGCGGAGG CGGTGGCTCC AGCTGCGGAG GCGGCTCCTC TGGTGGCGGC TCTGGAGGTG 4080 WVO 93/22431 PCI! US93/03993 GCAAGGGTGT GCCAGTCTGC CACCAGACCC AGCAGAAGCA GGCGCCTACC TGGCCGTGCA 4140 AGTAAGGTCA CCGGGTTGCA ACGGAGACAA CAGAGCTGGA AGAGTTCTCC GTGGGCGCCG 4200 ATGGGCTTAA CTTTCTCATG AATTTGCCTG AGGTTTCCAA ACCCTTCACA TTTTAAGCGC 4260 CCCTTCCCCC AGAAGAAGCC ATTGAGTCGC TCAAGGTGTA TCCTGTTCTG CAGATTTTTC 4320 ATCTTGGTTT CTGAATGACT ACCTCCCAAT TCTAGTGTCT CCTCAGTCAA TAAATTTGCT 4380 ATTCATGAGA ATCTCTGAGT TTGCTGTAGT CTTTGTAGCT TGCAAATTTA CTCAGTTCAT 4440 TCTGTGTTTG CTTTTTCCAT TCATTAGTTC ACATTTAAAT TCACTGAACA AGTGTTCTAT 4500 CCCAAGGTGG GGGAGTAGAT AGATGGAATG GGGCAAAGGA TGACCAAGGT TGTGAACAGT 4560 CTGGGGTGTG GCTTAAAAAT CATGAGATGG TCC-TCAAACA CCAAGAAAAG TCTTCACTGG 4620 ACATCCTACA cATCACTGAA ATTGGGCCTG OGCAGGCAAT TTCTAGCAGT GCAGAGTTCA 4680 CTCTCCMAGT TCTGGAAGCA GGATGGvCTCT CAGATTAGGT TAGCTACCAG AGGTCCAAGT 4740 CCACTGACAT GTTCTGACCT AAGAAGAAGG ACATTCACCC CTGAACAAAA GACCCCTGCC 4800 CATGCGATCT TCCGGAACAC TATAACTACT TTCCTTACTC ATGACCCATG ATAGAGCTTT 4860 GAGGCAAAGA TACAMIX-CCT CTATGTCTTC TCAAGATTGC CAGTTCTTCA TTAAGCCTGA 4920 TACCTTCTTA CCAGCGCACG TCTCCTGAAT ACTGATAAAG TCTGICTTTTG TTAGTCTGTT 4980 AGAAAAATAT TATATCAGAT AATCAAGATC CTCTACAGTG TGTGAGACAG TTTACTGAGC 5040 ATCTATAGAG ATAGAAGGCL GCCCTCTMA AGGATTGAAC GCGTACGTTT CGTCCAATTT 5100 GACGAAGGTAC ATCGTAAGTA TTTAAGATGC TTAACATCAG TATCACAGAG GTCACTGGAA 5160 ACATTAGGGG CCTCCTGATT AGCAAGCATA AAGCTAGAGT TGCTCAAAGG CATGTGTAAC 5220 A~ACCATCCCC TGGCCAGATC CTGTTTTACA GTCAGATITT ATCAGCTTTA GGTAAATGCT 5280 NVO 93/22431 WO 93/243 1PT! US93/03 993 -31- AACTTACTGA CTTACTCAAG TTAATTTTGC TATACTAAAA AGCCAATGTG CCTTCCTACA 5340 TTTAGCTAAT GATAGAAATA AAAAGATTTC ATCTCACTCT TCCATTTGGA GTCATCACTA 5400 CCTTCATCAT TTGCATCAGA GATAGAGCAT GCCAAGTAGC AACCTCAGTG ACACAGTAGT 5460 CTTACCACCA CATTTTTATG GATTAAATGT ATTTTTTTTA GCATGGTTAT ATGTGCATAT 5520 AATACACTCT GATTACTCAC TTCCCTATCC TTTCTTACTC CTCCCCATCC CAACCTGTA.T 5580 CAATCCTTAC CTTCCCTACA ATTCCCTTTA CCATGTTTTT GTTAGTTTTG TTGGTTTGTT 5640 TTGTGACCCA CTGAGCTAAC CAGGGCCATC TGTATGACCA TGG4GTTTGGA TTCTGATG4GA 5700 ATCCCACTGG GTACACAACT GAAACTAGTG ACTCCCCTTC ACAGAATCTA TCAGTAGACA 5760 ATAATTCAAC AGGGAATGGT GGGGCTCTCT CCATCCTTGG CTAACTGTTG ACAGGACAGT 5820 CTTGTGCAGG CCTAGTGCAG ACAACCATAG TTGCTGTGAG CTCATGTTTG CAATGGCTGT 5880 GTTATACATA GGAGATAGTA TTTTGGAGCC ATTATCCATG TCTGGCTCTT ATATTCCACC 5940 TTCTCTTTTA GGATGTTCCT TGAGTCTTTG AGGAATGTTT TGGTTAGAAC CGAGTGCTCA 6000 GTTGTCATTT ATTTTCAGAA TCTTGAGCAT CAAAGGATAC ATAAGATATT ATATTATAGG 6060 ATACTAAATT TTTGTACAGA TTTTTCATAT ACCCTTCATA TTGGTTAACC ATAATCCCCA 6120 ATTTTTCTCT CCTCTAACAC TCCACTGCTC CCATACCAGA TGAAACCTTT CAACTCCATG 6180 TATTTTCCCT CTTTGCTTTC ATTTTATCTA TATTGTATGA TCTCAACTCC CTTAATCTAT 6240 CTCACTACCA ATAACCCTTT TCTAAACTGG TAGCCTACAA CTTTAGTTCC AGTACTTGAT 6300 GCAGAAGTAG ATGGAGCAAT GTGAACTCAT GCTCAGCCTG GTCTATGGAA TGGGTTACAA 6360 GCCAGCCCGG ACTATGTAAT AGGACCCTGT CTCAAAAACA ACTAAACCAA ACAAACAAAC 6420 WO 93/22431 WO 93/43 1PT/ US 93/03993 -32- AAACAAAGAA CAAACAAACA AACAAACCAA AAATCTCAAC CATTTCTAGT TTTTCTAGTT 6480 TTTACTTGAA CATCAAGTTA AGCATAACTA AAGTTTCAAA AATAGGATCC 6530 INFORMATION FOR SEQ ID NOs2: SEQUENCE CHARACTERISTICF: LENGTH: 5092 base pairs TYPE: nucleic acid STR1ANDEDNESS: double TOPOLOGY: linear (ii) MOLECULE TYPE: DNA (genomic) (111) HYPOTHETICAL: NO (iv) ANTI-SENSE: NO (xi) SEQUENCE DESCRIPTION: SEQ ID NO:2: GGATCCTGAT ATAGCTGTCT CTTTTGAGAC TATCCCGGGG CCTAGCAAAC ACAGAAGTGG ATGCTCACAG TCAGGGATTG GGTGAATCAC AGGGCCCCCA ATGTTGGAGC TAGAGAAAGA 120 ACCCAGGGAG CTGGGGGGAT CACCTGAGTT CATACTGTCC AAACTGAAAC AAGTGGCACA 180 AGTTTCTGAG AGCCAAAGTC TAATCAGGAT CGTTTAGATC ATTAATGCTC CCCCATAATT 240 AAGACAATTT CTGATTAGAA TTATTCTTTC AACACAGCTG GGTGGAACAA GGTTCAACAG 300 TGGTATCTTA ATAGCAACTG AGTTCCAATG ATGAAAGAAA GGAAAAACAC TATGTTCTTC 360 ATACACAGAG GGGGGCTGCT CTTGGCCCTA GGGTCATCAG AGAACTGAGT AAATCTTATA 420 GGAAAATAGT TAAGATGTCT TCACACACCT CCTTTCCAAT AGGGTTCAAG GGCAGGCATG 480 ATTGGAAGGA AAAGTGTTCT GTCATGTGAG AAAAGAGCAA AAGTATTAAT ATCACATACT 540 WO 93/2243 1 PCT/ US93103993 .33- ATGTAGTACA TTCATATTTC ATAACTTCCA TTTTCATGTT TCTGTGAAAT A-MATTATAGG 600 ATTCCTGCTT GOTAGACCAN ATGGGGATCA GACAGCTCAA CAATGAACAA GTACTCAGTA 660 ACTGCCCTGT TGGTGGCATT GCATGAACTA CTGTGCTTTG CCCATGGTGA CATAGCTTGA 720 AATAGTAATG GAAGACCTGA ACCCAACTGA GATCTCTAAG TACATTCCAC TCTATGOTGG 780 CATCTCAGAG GTCAGAGTCA CTGTGCAGCG CCATAGGACA TCAGAATCAA AGGGTCATGG 840 TGAAAAGGCT GCCAGGGTCT GTCT2TGTTAG TTCTCACCTT TGTAAGTAAA GTCAGTAGTC 900 AGTAACAAAG ATCAAAACAC CTGCTCTCAC AAGGAATAAC TTAAAGTAGA CTAAAGTCAT 960 GCTAGTTACA GTGCTGTCTT TTCCGTGGTA CCATCCCAAA CTGGGAGCTG GGGACTCACG 1020 AACTCTCACA ACCAATAAAG TAAGCAGAAC AGAAGCAACC CAATGAAGTG TTCATGAAAC 1080 TGGAATGGAG AAATTGTGGC ATAAGAGATG GATTCTAAAA TTTTGAGAAT TTCCAAGATA 1140 ATGAAATTAA AACCAAACAT CAAAATTGGA AAGATACAAC TGAACTAGCT TCTATGTCTT 1200 AGACAATGTC TTAGATCTCT AGATTCCGTA AGGCTGCTTC ACAAGTCr~GC AACCTAGTCC 1260 TCTAGAATAG CCCTCTGGTT ATGGCACGCA ACCTATACAG AAGTTTTGAA AACAATTTCT 1320 GCCATCCACA CTGCTGGCCA TCTCTAATGA CCAACCTGCT CACTOTTACA TCAGAGAAGT 1380 GGCCAGTCAT 4\CACCAAACT GCCTATCCCT ATCCCAAGAA TTTGPIAATCT TCATGAATGG 1440 GTCAATCCTT CCCCTGCMAT CACAGGGAGG AGGTGCCTGA TCAATAGATG AGTCAGAGCA 1500 GGACAAGAGT ATAAAACACA GGAGCACCAG TGTCCCTCAC ATCAGCATCA CCTCCTTCCC 1560 TCACTCATCT TCCCTG-STGC TTCAGGTAAG. TGTGr.GCTCT CCTGGCTGTC TGGTCTCTCC 1620 AGTTGGCCTT GCTCAGCTTG CAGAGAGGTT AAGGAACAGA GCCTTTCTCC CCTTTGGAAG 1680 GTACTCTGTT CAAATTGAGA AGGGCTTTAG GAAAGCACTG GGAGAGTGGT AAGCTGGTGC 1740 WVO 93/2243 1 PCI'! US93/03993 -34- TGGGCAGATG ATGTGTCTGG TCTTCTGGGC AGAATGTTAR AACTTCACAA AGATATGACT 1800 ATCTCCTACT TCTCTGGCAC CCTG4GGAGCT GAGGGTTAGA ATACTGGATG ACTGCAGTGG 1860 CAGGCCTCCA TGGGCTGGAT GAACCTTTTG AACC-TGCCAG AAGTGGCTGA ATACACTATC .1920 AGGAAGGGAG AGGGACGATA AGTCATAGAA TGGTGCTGAT GGGAGATTTG AGAAGCCACA 1980 AAAACCCAAG CTCTGCTTTA TGAGGGCAGA TGTTCTGACA GATAAATGAC TTGTGAGGTG 2040 CTGAACTACA CAGCTTCCTA TTAGCTACAG CTAATTGGAG TCTACCAAAT TTAGACTCCT 2100 GCATATCTCA AAAAGATGTC TACTTTCTTC TGGTTAGATG TACTGGTCCA AAAG4GTTCAG 2160 AGTTCTTCCA TTTGTTTGCA GACAGGACCA CAGTAGAGCT GTC'ITGTCTA ATAATTGGCC 2220 CTTGGAGGAT ATCTCACTCA ATAGGACAGA TCAAGAGTTT AAACTAAGGA CTTTATACAG 2280 GAAATGCTAA TGTCCAAACA AATCTTTTCT TATTGTGCTG GGAGTGGATA AAATCCACGT 2340 GGAATTTTTG CAACTTTCTA CTGAATTTAA AGAATCAGCA CTGGGACTTG GGCAGCACCCT 2400 TAGACATGGA GTGTTTATTA ATGTAAGATC AAAAGCAGGT GGGAATGTGG GGGTTCTGCT 2460 TCCCAAATCA CATAGTAGAA GAAAGGCAGA GTTGAGGr.'-,A AAGGGGGTCA CTATTAACGG 2520 GACTTTTGAA GAGCTAACCA GTCCAGGAAT GGAGTCCAGA CACCTAGTCT GCATAAAGCT 2580 AGGAGTCAGA AGTATGTTGG CATGGATGCA TCTGCCACCT TCACAGCGTC CTCTTGCTGC 2640 TGTTGGTCTA ATGTTGCTCT TCTGCTCTTC TTCCAGGGTT CCCCTTCTCC TTAAACAACA 2700 TCGATAAGGT CACCGGGTTG CAACGGAGAC AACAGAGCTG GAALGAGTTCT CCGTGGGCGC 2760 CGATGGGCTT AIACTTTCTCA TGAATTTGCC TGAGGTTTCC AAACCCTTCA CATTTTAAGC 2820 GCCCCTTCCC CCAGAAGAAG CCATTGAGTC GCTCAAGGTG TATCCTGTTC TGCAGATTTT 2880 TCATCTT.GGT TTCTGAATGA CTACCTCCCA ATTCTAGTGT CTCCTC-AGTC AATAAATTTG 2940 WVO 93/2243 1 PcT/ US93/03993 CTATTCATGA GAATCTCTGA GTTTGCTGTA GTCTTTGTAG CTTGCAAATT TACTCAGTTC 3000 ATTCTGTGTT TGCTTTTTCC ATTCATTAGT TCACATTTAA ATTCACTGAA CAAGTGTTCT 3060 ATCCCAAGGT GGGGGAGTAG ATAGATGGAA TGGGGCAAAG GATGACCAAG GTTGTGAY:CA 3120 GTCTGGGGTG TGGCTTAAAA ATCATGAGAT GGTCCTCAAA CACCAAGAAA AGTCTTCACT 3180 GGACATCCTA CACATCACTG AAATTGGGCC TGCGCAGGCA ATTTC2'AGCA GTGCAGAGTT 3240 CACTCTCCAA GTTCTGGAAG CAGGATGGCT CTCAGATTAG GTTAGCTACC AGAGGTCCAA 3300 GTCCACTGAC ATGTTCTGAC CTAAGAAGAA GGACATTCAC CCCTGAACAA AAGACCCCTG 3360 CCCATGCGAT CTTCCGGAAC ACTATAACTA CTTTCCTTAC TCATGACCCA TGATAGAGCT 3420 TTGAGGCAAA GATACAAACC CTCTATGTCT TCTCAAGATT GCCAGTTCTT CATTAAGCCT 3480 GATACCTTCT TACCAGCGCA CGTCTCCTGA ATACTGATAA AGTCTGGTTT TGTTAGTCTG 3540 TTAGAAAAAT ATTATATCAG ATAATCAAGA TCCTCTACAG TGTGTGAGAC AGTTTACTGA 3600 GCATCTATAG AGATAGAAGG CAGCCCTCTT GAAGGATITGA ACGCGTACGT TTCGTCCAAT 3660 TTGAGAAGGT ACATCGTAAG TATTTAAGAT GCTTAACATC AGTATCACAG AGGTCACTGG 3720 AAACATTAGG GGCCTCCTGA TTAGCAAGCA TAAAGCTAGA GTTGCTCAAA GGCATOTGTA 3780 ACAACCATCC CCTGGCCAGA TCCTGTTTTA CAGTCAGATT TTATCAGCTT TAGGTAAATG 3840 CTAACTTACT GACTTACTCA AGTTAATTTT GCTATACTAA AAAGCCAATG TGCCTTCCTA 3900 CATTTAGCTA ATGATAGAAA TAAAAAGATT TCATCTCACT CTTCCATTTG GAGTCATCAC 3960 TACCTTCATC ATTTGCATCA GAGATAGAGC ATGCCAAGTA GCAACCTCAG TGACACAGTA 4020 GTCTTACCAC CACATTTTTA TGGATTAAAT GTATTTTTTT TAGCATGGTT ATATGTGCAT 4080 ATAATACACT CTGATTACTr- ACTTCCCTAT CCTTTCTTAC TCCTCCCCAT CCCAACCTGT 4140 WO 93/22431I PCriUS 93/03993 ATCAATCCTT ACCTTCCCTA CAATTCCCTT TACCATGTTT TTGTTAGTTT TGTTGGTTTG 4200 TTTTGTGACC CACTGAGCTA ACCAGGGCCA TCTGTATGAC CATGGGTTTG GATTCTGATG 4260 GAATCCCACT GGGTACACAA CTGAAACTAG TGACTCCCCT TCACAGAATC TATCAGTAGA 4320 CAATAATTCA ACAGGGAATG GTGGGGCTCT CTCCATCCTT GGCTAACTGT TGACAGGACA 4380 GTCTTGTGCA GGCCTAGTGC AGACAACCAT AGTTGCTGTG AGCTCATGTT TGCAATGGCT 4440 GTGTTATACA TAGGAGATAG TATTTTGGAG CCATTATCCA TGTCTGGCTC TTATATTCCA 4500 CCTTCTCTTT TAGGATGTTC CTTGAGTCTT TGAGGAATGT TTTGGTTAGA ACCGAGTGCT 4560 CAGTTGTCAT TTATTTTCAG AATCTTGAGC ATCAAAGGAT ACATAAGATA TTATATTATA 4620 GGATACTAAA TTTTTGTACA GATTTTTCAT ATACCCTTCA TATTGGTTAA CCATAATCCC 4680 CAATTTTTCT CTCCTCTAAC ACTCCACTGC TCCCATAC. A GATGAAACCT TTCAACTCCA 4740 TGTATTTTCC CTCTTTGCTT TCATTTTATC TATATTGTAT GATCTCAACT CCCTTAATCT 4800 ATCTCACTAC CAATAACCCT TTTCTAAACT GGTAGCCTAC AACTTTAGTT CCAGTACTTG 4860 ATGCAGAAGT AGATGGAGCA ATGTGAACTC ATGCTCAGCC TGGTCTATGG AATGGGTTAC 4920 AAGCCAGCCC GGACTATGTA ATAGGACCCT GTCTCAAAAA CAACTAAACC AAACAAACAA 4980 ACAAACAAAG AACAAACAAA CAAAPCAAACC AAAAATCTCA ACCATTTCTA GTTTTTCTAG 5040 TTTTTACTTG AACATCAAGT TAAGCATAAC TAAAGTTTCA AAAATAGGAT CC 5092 INFORMATION FOR SEQ ID NO:3: SEQUENCE CHARACTERISTICS: LENGTH: 5159 base pairs TYPE: nucleic acid STRANDEDNESS: double TOPOLOGY: linear WO 93/22431 PC'/ US93/03993 -37- (ii) MOLECULE TYPE: DNA (genomic) (iii) HYPOTHETICAL: NO (iv) ANTI-SENSE: NO (xi) SEQUE.NCE DESCRIPTION: SEQ ID NO:3t GGGAAAACCT GTOTCGTGAG GGGOACACA GGGAGTGTCT ACATGGOCA GGACAATTAT CACAGATCAG CTCCTTGTCT CTTTTGTTTG AGAAGATGAC CTTAAGAGAA TTTAcG.TCCT GGCTCATTGT GTTCAGATCA AGTCAAGGCT AGAATTTGCT CCGTGACTAA AGGAATCCAA. AAGCAATCTT CATGTATCAT AACTTGGGGG TGATCTCATT ATTTGTAAAG CCCTGCCCTA CCCACTCTGC TCAGGACCCA ACCCAGCCCA TCTGTACCAT ATATAAGCGG CTGCCCAGAG TCATCTCTTC AGCTCTGCCC TGCCGTTTCT CTACTTCCCA GCCTTCTCAT CATGTCTACC AAAACCACCA TCAAAAGTCA AACC,'- 'CAC CGTGGCTACA AGCCAGAGTG CCTGGGCTCA ACCGCTCTGG CTTCAGCAGT GTGTCCGTQT GGGCAGCGGT GGCTCCAGTG CAATGTGTGG AGGAGCTGGC TTTGGZCAGCA

AGAAGGAAAG

TAACTCATGA

GGAAGGCAGG

ACCTTTCTAG

AAGCTCACCA

CTCATACACAC

CTCCAGGAAC

GTGCCAGCTC

GCCGCTCCCG

GGAGCCTCTA

120 180 240 300 360 420 480 540 600 660 720 780 840 900 TGGTGTGGGG AGCTCCAAGA GGATCTCCAT CGGAGGGGGC AGCTGTGGCA TTGGAGGAGG CTATGGCAGC CGATTTGGAG GAAGCTTCGG CATTGGAGGT GGAGCTGGTA GTGGCTTTGG CTTCG4GTGGT GGAGCTGGCT TTGGTGGTGG CTATGGGG4GA GCTGGCTTCC CGGTGTGCCC ACCTGGAGGC ATCCAAGAGG TCACCATCAA CCAGAGCCTC CTCACACCCC TGAACCTGCA AATTGACCCC ACCATCCAGC GGGTCAGGAC TGAGGAGAGG GAGCAGATCA AGACCCTCAA WO) 93/22431 PICFi IS-'3/03993 -38- TA.ACAAGTTT GCCTCCTTCA TCGACAAGGT GAGACATGGT CCTCCCTjA.GA GCACCCTGTG 960 TGTCTACAGG GAATGCTGAA~ CAGAGGTGTA GGGAAGAGGC TTC4'GTCTC*A GCTCTGATI, 1020 TGCCTGTGTT GCTAGTTGAT GCTCTGTCCT GGTTTGTGTT CCTCTTCAGT -IAGACTGGCA 1080 TCTGGAAATC AGGGTCAGCG TTCCTCTCCT CCAGAGGTTG CCCTATAAC-G GTGTCTGGTC 1140 CCAGTGGACT GAGATGACTT AAGACTCAC AAAACAGGCT TGTAGGGAAA TGGP.AGATTA 1200 TAAC'TATGTA TAGTGCAGTT GGGAGGCATG CCAGCCTCAC TAAGCTGCAG CACACTTCAT 1260 CAAGCCATGG CTAACCTGCC AGTGCCCTAC ATGAGTTCTC TGCCCTCCTT AGAGAG43TGG 1320 CA2fTGGGTGC TTCAGTCTGG ACTGTTTCCC TCAGACCCAG GGTCAGGGTC TAACTACACT 1380 GAATGAGT TT AGTCAGACAG CCTGAG7.GGG TACACACACT AGTGAAGTGT TCATAGAAGG 1440 ATGAAACCCA AACTTCTCCC CCTCATACTT GCCCCCCCGC CCCOACCAGG TGCGGTTCCT 1500 GGAGCAGCAG AACAAGGTCC TGGACACCAA GTGGGCCO'TG CTGC4,,,NGAGC AGGGCACCAA 1560 GACCGTGAGG CAGAACCTGG AGCCTATGTT TGAGCAGTAC ATCAGCAACC TCCGCAGACA 1620 GCTGGACAGC ATCATLTGGAG AGAGGGGTCG CCTGGACTCA GAGCTGAGGA AC-ATGrCAGGA 1680 CACAGTGGAG GACTACAAGA GCAAGTGAGT TACAAAGAAG GGAGAATCCA GTCTCCGGAC 1740 TTTATAAAAA TGGAAGCCC.A AATCTAAACA AGGGCTCCAT GATGTAAGAA AGCTTGGTCA 1800 CATCTGGGAC AGAGGCTGCC ATTGATACCA TCCACCCCGT GGCTCCAATA TAGTGCACCT 1860 TTCCTCTTGT AGATATGAAC- ATGAAATCAA CAAGCGCACA GCAGCAGAGA ATGAATTCCT 1920 GACCCTGAAG AAGGTGAGTT GACTAACCAC AAGGATGGGT TTCTCTGCGG AATGACATAA .1980 AAGGCCTTGT ATATCTGCGT CATTCCAGAG AAATGGTGGT TACAG(CGAAA GAAGTGAACG 2040 GTCTGCGGAA GAGAGGTAAC CTGATTCCAT GTTCTTGATG GTTTTCTCAG GATCTAGATG 2100 WO) 93/22431 "CT/ US93/03993 -39- CTGCCTACAT GAACL2,JAAGTT GAACTGCAAG CCAAGGCAGA CAGTCTAACPA GATGATATCA 2160 ACTTCTTGAG AGCTCTCTAT GAAGCAGTAA GCCCCCCTTG TCTTCTCTTC TCCTTTCCAT 2220 TCACCACTCC CT' LAT TTCCCCCTGG GCAAAGTGTT TGACCTCTGC AGTTCTCAAA 2280 GACAAAGATG ACTATGGCTC TTTL.TGTCCT GCAGGAACTG TCTCAGATGC AAACTCACAT 2340 CTCAGACACA TCTGTGGTCC TCTCCATGGA CAACAACCGT AGCCTGGACC TGGACAGCAT 2400 CATCGCTGAG GTCAAGGCCC AGTATGAGGA CATTGCTCAG AGAAGTCGGG CTGAAGCTGA 2460 GTCCTGGTAC CAGACTAAAG TGAGTATTGG GGTGGAGGCT GATGGGGATG CCTGGGGTCC 2520 ACCCTGAACT CCATGAGTCT CTGAGTTCAG TATTGGOAGGC CCACTAAAAG AAATAGGGAT 2580 GTTGTCCCAG AAAATGCACT GTGCACATGT ACCATAGAAT AATGTTTTAC TCGAAGAGTA 2640 AAAGAACACA GAGGTAGATG CAAAGTTGCC ATAAATGGGG TCCATGCTCT TTGCTTGAGC -2700 TGTACTCTGA ACAATGATCC TCTTGAGAA CTAGAGAACA TTTTCACTTC CTGAGGGAAC 2760 TATGGAGTCT GTGGTCTCCT AAAGCTTCTC TTGAGGAAAA GCCAGCACAT CCATGGAAGT 2820 GTGTGCCACT CAGAGGTGGG TTTCGTTCCG CATGTAACAA CTCACATAQA TGTCCTCTCT 2880 TTGATTGGCC TTCAGTATGA GGAGCTGCAG GTCACAGCTG GCAGACATGG GGACGACCTG 2940 CGCAACACCA AGCAGGALGAT TGCTGAGATC AACCGCATGA TCCAGAGGCT GAGATCTGAG 3000 ATCGACCACG TTAAGAAGCA GGTGGGGTAG ACAGAGAA.AT GCATGGGTTG CGGGTTGTGT 3060 TTCCTGTCCT CTAACTCTTG CTCACCAGAA ACCATGGTCT GGGGCTCAGC CTCTGCAGAG 3120 ATGTACACTC CACGATTATT TTTGTTGCTC TCTCTGCCCA GTGTGCCAAC CTGCAAGCTG 3180 CTATTGCTGA TGCTGAGCAA CGTGGGGAGA TGGCCCTGAA GGATGCCAGG GGCAAGCTGG 3240 AAGGGCTGGA GGATGCCCTG CAGAAGGCCA AACAGGACAT GGCCAGGCTG CTGAAGGAGT 3300 WVO 93/22431 IPCT/ US93/03993 ACCAGGAACT CATGAATGTC AAGCTGGCCC TGGATGTGGA AATTGCCACC TACAGGAAGC 3360 TGCTGGAAGG AGAGGAGTGC AGGTGGGTAA CTATATCCTC CAACCCCTGA GGACAGCTCC 3420 TTGGTGCAAG CACTGAGCAC AAGAAGGGAG CACTGACTAT GCCCACAATA GTCCCTTTAA 3480 GAAACTCCTT GCTGTGCTGG AGAGATGGCT CATTGTTTAA GAGCACTAAC TCCTCTTCCA 3540 GAGTTACTGA GTTTAATTCC CAGCAACCAC CTGGTGATTC ACAATCATCT CTATTGAGAT 3600 CCAGTGCCCC CTTCTGGTGT ';TTTGAAAAC AGCTACAGTG AACTAAAATA CATATACTAA 3660 ATAAAGAATA TTTTTAAACA AACAAACAAA ACAAAACAAA CAAACAAACA ATCAACCCAA 3720 AACAAAACTC TAIG.GGATTC TCTCTGAGCC TTCACTAGAT TG.AGGCTTCC CATTCAGGCT 3780 GAAGTGATGG CTGCCTAGTT CTCACCTGTT GCTTTCCTCT TGTAGGTTGA ATGGTGAAGG 3840 TGTTGGACCA GTCAACATCT GTAAGTACTC TGCTTGTCCG AATCCCCTTC TCCTTACTTT 3900 GTGGCTTAAT TATCTGGTCA CAGTGGGCTG ACCATGTCTG TGGTGTCCTT TTCCTCCTTC 3960 ACAGCTGTGG TGCAGTCCAC CGTGTCCAGC GGCTATGGCA GTGCCGGGGG TGCCAGCAGC 4020 AGCTTAGGCC TCGGTGGAGG CAGCAGCTAC TCCTATAGCA GCAGCCATGG CCTTGGAGGT 4080 GGCTTCAGTG CTGGCAGTGG CAGAGCCATC GGAGGTGGCC TCAGCTCTTC TGGTGGCCTC 4140 AGCTCTTCTA CCATCAAATA CACCACCACc TCCTCCAGCA AGAAGAGCTA CAGGCAGTGA 4200 ATTCTGTCAC CAAGAGCTTG TCTCTGGTCC CAGATGTCAT GGCTGCAGAA TCCTGTGCTC 4260 AGAGCCCCGA GTTCAGGGGC TTCTCCTCCC TGGACCCCAC CTCTGCTCCC TTCTTGGGAC 4320 TGAGGAGGCT GTGTCATTTT GCTCATATTT CTGTCCCCAT GGGTCCCCAC TGCTCATCTC 4380 TTTATAGTCA TCCTGTGAGC TTACATCACA ATTCACTCAC ATTTGGTGCT TCATGTTGTA 4440 TTTGGTTGCC AGGCTCCTGC CTCCCTACCT CTGTCTCTGA GGCTGCCTGT GACAGGGTGT 4500 WNO 93/2243 1 PCT/ US93/03993 -41- TTCCGACACC TTCATTTTTG AAATCATTGT CTGGGTCCTA CTCAAGTAAT GAGCAGCTCC 4560 CTGTGAGTTT CTAATGGCCT GAGAAACCCC ATCTCTCAAC ATCATAACCC TCCCTGTCAG 4620 TAACTGTGAC TGCCCCGTCA CTGGTCCTGT GATGTAAGTT TCTGCTCATG TGATGTCTTT 4680 GCTTTCCTTG ATGCTCTTGG CTTCCTTGTA ATTTCTAAAT AAAGCAGGTT TATACATAAT 4740 AAAATTTTCC ACGTGCATTT TTTGTTGCAA TGTTTTTAAT ATAGAAATTC TGTGCCCTTG 4800 CTAGACAAGG CATCATTACA GTTCCCTCTC CCAGGTCTAT ATGTCTTCAT CTGTTAGTAT 4860 ATAGTTTAAA TTTAAGTTCA CATTTTAAAT TAATTTCAAT AACTTTTTAA ATAAAATAGA 4920 ATTCCATCAA TTCCCCCCCC TTCATTTTTC ACCTGCCCAG ATGTCTTCAC TCCAAACCCT 4980 CACCTGTTTC TCCATTTTCA AATTGAGAGT CTTTTGAGGA AGCCTATATT TCCTTCATTT 5040 TCTTATAAAT AATTTTGTAA TGTATCCATT TCCCTTTCTT TAAAGATAAT CAACAGATGT 5100 CAGTTCAGCG TTCCTTCCCA CATGAAT7GC CTTCCTGTCA GCAAGAACAT GATCTGCAG 5159 INFORMATION FOR SEQ ID NO:4: SEQUENCE CHARACTERISTICS: LENGTH: 16 amino acids TYPE: amino acid STRANDEDNESS: single TOPOLOGY: linear (11) MOLECULE TYPE: peptide (iii) HYPOTHETICAL: NO (iv) ANTI-SENSE: NO WO 93/22431I Pcri US93/03993 (xi) SEQUENCE DESCRIPTION: SEQ ID NO:4: Cys Ser Ser Val Lys Phe Val Ser Thr Thr Tyr Ser Gly Val Thr Arg 1 5 10

Claims (45)

1. A loricrin constitutive vector for efficient expression of a nucleic acid sequence in epidermal cells, comprising: a 5' flanking region of the loricrin gene, said flanking region including a TATA box, a cap site and a first intron and intron/exon boundary all in appropriate sequential and positional relationship for expression of a nucleic acid cassette; a 3' flanking sequence of the loricrin gene; and a linker having a unique restriction endonuclease site at the location of the start and stop codon, said linker connecting the flanking region to the 3' flanking sequence and said linker further providing a position for inserting the nucleic acid cassette.

2. The loricrin constitutive vector of claim 1, wherein the 5' flanking region is approximately 1.5 kb, the intron is approximately 1.1 kb and the 3' flanking sequence is approximately 2.1 kb.

3. The loricrin constitutive vector of claim 1, wherein the unique restriction site is selected from the group consisting of Cla I, Not I, Xma I and Bgl II, Pac I, Xho I, Nhe I and Sfi I.

4. The loricrin constitutive vector of claim 1, wherein the linker is a poly- linker, said poly-linker including a plurality of restriction endonuclease sites. A keratin K6 inducible vector for regulated expression of a nucleic acid sequence in epidermal cells, comprising: a 5' flanking region of the keratin K6 gene, said flanking region including a TATA box, a cap site, a firs- intron and intron/exon boundary sequence all in sequential and positional relationship for expression of a nucleic acid cassette; a 3' flanking sequence of the keratin K6 gene; and a poly-linker having a plurality of restriction endonuclease sites, said polv-linker connecting the 5' flanking to the 3' flanking sequence and further providing a position for insertion of the nucleic acid cassette.

6. The keratin K6 inducible vector of claim 5, wherein the 5' flanking region is approximately 8.0 kb and the intron and intro/exon boundary is approximately 0.56 kb and the 3' flanking sequence is approximatley 1.2 kb.

7. The vector according to claims 1, 4 or 5, wherein the cassette includes a nucleic acid sequence coding for a protein or polypeptide selected from the group consisting of a hormone, a growth factor, an enzyme, a clotting factor, an apolipoprotein, a receptor, a drug and a tumor antigen.

8. The vector according to claims 4 or 5, wherein the plurality of restriction endonuclease sites are selected from the group consisting of Cla I, Not I, Xma I, Bgl II, Pac I, Xho I, Nhe I and Sfi I.

9. A method for in vivo transduction of epidermal cells with a loricrin constitutive vector according to claim 1, comprising the step of contacting the vector with epidermal cells for sufficient time to transfect the epidermal cells. A method for in vivo transduction of epidermal cells with a keratin K6 inducible vector according to claim 5, comprising the step of contacting the vector with epidermal cells for sufficient time to transfect the epidermal cells.

11. A bioreactor comprising transformed epidermal cells including the loricrin constitutive vector of claim 1. '12. A bioreactor comprising transformed epidermal cells including the keratin K6 inducible vector of claim

13. The bioreactor according to claims 11 or 12 wherein the loricrin constitutive 25 vector includes a cassette having a nucleic acid sequence coding for a protein or polypeptide selected from the group consisting of a hormone, a growth factor, an enzyme, a drug, a tumor suppressor, a receptor, an apolipoprotein, a clotting factor a tumor antigen, a viral antigen, a bacterial antigen and a parasitic antigen.

14. The bioreactor of claim 13, wherein the nucleic acid sequence encodes 30* so proinsulin or insulin. The bioreactor of claim 13, wherein the nucleic acid sequence encodes growth hormone.

16. The bioreactor of claim 13, wherein the nucleic acid sequence encodes insulin- like growth factor I, insulin-like growth factor II or insulin growth factor binding protein.

17. The bioreactor of claim 13, wherein the nucleic acid sequence encodes antihemophilic factor (Factor VIII), Christmas factor (Factor IX) or Factor VII.

18. The bioreactor of claim 13, wherein the nucleic acid sequence encodes an epidermal growth factor (TGF-a), a dermal growth factor (PDGF) or an angiogenesis factor. [N:\LIBU]23112:men

19. The bioreactor of claim 13, wherein the nucleic acid sequence encodes Type IV collagen, laminin, nidogen, or Type VII collagen. The bioreactor of claim 13 for vaccine production, wherein the cassette includes a protein which induces an immunological response.

21. A method for ex vivo introduction of a loricrin constitutive vector according to claim 1 into epidermal cells comprising the steps of co-transfecting the vector with a selectable marker and selecting the transformed cells.

22. A method for ex vivo introduction of a keratin K6 inducible vector according to claim 5 into epidermal cells comprising the steps of a co-transfecting the vector with a o1 selectable marker and selecting the transformed cells.

23. A loricrin gene of SEQ ID No. 1.

24. A loricrin constitutive vector having: a 5' flanking region comprising nucleotides 1 to 1540 of SEQ ID No. 1; an intron and intron/exon boundary comprising nucleotides 1587 to 1679 of SEQ ID No. 1; a 3' flanking region comprising nucleotides 4384 to 6530 of SEQ ID No. 1; and a linker to be inserted at the unique Cla I site at nucleotides 2700 to 2705 SEQ ID No. 2 A keratin K6 gene of SEQ ID No. 3.

26. A keratin K6 inducible vector having: a 5' flanking region which extends from a unique 5' Xho I site up to nucleotide 360 of SEQ ID No. 3; an intron and intro/exon boundary comprising nucelotides 928 to 1494 of SEQ ID No. 3. a 3' flanking region which extends from nucleotide 4740 of SEQ ID No. 3 to a unique 3' Xho I site; and 25 a poly-linker inserted between nucleotides 1504 to 1509 of SEQ ID No. 3

27. A method for enhanced healing of a wound or surgical incision comprising the steps of in vivo transduction of epidermal cells with a loricrin constitutive vector according to claim 1, wherein said vector includes a nucleic acid cassette having nucleic acid sequences for a growth factor. 30 28. A method of enhanced healing of a wound or surgical incision comprising the step of in vivo transduction of epidermal cells with a keratin K6 inducible v ctor according to claim 5, wherein said vector includes a nucleic acid cassette having a nucleic acid sequence for a growth factor.

29. The method according to claims 27 or 28, wherein the epidermal cells are transduced with a plurality of vectors and wherein the cassette of at least one vector includes the nucleic acid sequence of epidermal growth factor (TGF-a), the cassette of at least one vector includes dermal growth factor (PDGF), the cassette of at least one vector includes the nucleic acid sequence for a matrix protein to anchor the epidermis to the [N:\LIBU 23112:mcn 46 dermis and the cassette of at least one vector includes the nucleic acid sequence for an angiogenesis factor. The method of claim 29, wherein the sequence for the matrix protein is selected from sequences coding for a pitein selected from the group consisting of Type IV collagen, laminin, nidogen and Type VII collagen.

31. The method of claim 29, wherein the angiogensis factor is selected from the group consisting of acid fibroblast growth factor, basic fibroblast growth factor and angiogenin.

32. A method of treating skin ulcers comprising the steps of in vivo transduction of epidermal cells with a loricrin constitutive vector according to claim 1, wherein said vector includes a nucleic acid cassette having a nucleic acid sequence for a growth factor.

33. A method of treating skin ulcers comprising the steps of in vivo transduction of epidermal cells with a keratin K6 inducible vector according to claim 5, wherein said vectors include a nucleic acid cassette having a nucleic acid sequence for a growth factor.

34. The method according to claims 32 and 33, wherein the epidermal cells are transduced with a plurality of vectors and wherein the cassette of at least one vector includes the nucleic acid sequence of epidermal growth factor (TGF-a), the cassette of at least one vector includes dermal growth factor (PDGF), the cassette of at least one vector includes the nucleic acid sequence for a matrix protein to anchor the epidermis to the dermis and the cassette of at least one vector includes the nucleic acid sequence for an angiogenesis factor.

35. The method of claim 34, wherein the sequence for the matrix protein is S selected from sequences coding for a protein selected from the group consisting of Type IV collagen, laminin, nidogen, and Type VII collagen. 25 36. The method of claim 34, wherein the angiogenesis factor is selected from the group consisting of acid fibroblast growth factor, basic fibroblast growth factor and angiogenin.

37. A method of enhanced healing of a wound, surgical incision or skin ulcers in human and animals comprising the steps of: ex vivo transduction of epidermal cells with a loricrin constitutive vector according to claim 1, wherein said vector includes a nucleic acid cassette having a nucleic acid sequence for a growth factor; and transplanting said transduced epidermal cells into the animal or human to be treated.

38. A method of enhanced healing of a wound, surgical incision or skin ulcers in humans and animals, comprisisng the steps of: ex vivo transduction of epidermal cells with a keratin K6 inducible vector according to claim 5, wherein said vector includes a nucleic acid casssette having a nucleic acid sequence for a growth factor; and transplanting said transduced epidermal cells into the animal or human to be treated. [N:\LldU]23112:mcn 47

39. The method according to claims 37 or 38, wherein the epidermal cells are tranduced with a plurality of vectors and wherein the cassette of at least once vector includes the nucleic acid sequence of epidermal growth factor (TGF-a) the cassette of at least one vector includes dermal growth factor (PDGF), the cassette of at least one vector includes the nucleic acid sequence for a matrix protein to anchor the epidermis to the dermis and the cassette of at least one vector includes the nucleic acid sequence for an angiogenesis factor. The method of claim 39, wherein the sequence for the matrix protein is selected from sequences coding for a protein selected from the group consisting of Type IV collagen, laminin, nidogen and Type VII collagen.

41. The method of claim 39, wherein the angiogenesis factor is selected from the group consisting of acid fibroblast growth factor, basic fibroblast growth factor and angiogenin.

42. A method for treating psoriasis comprising the step of in vivo transduction of epidermal cells with a loricrin constitutive vector according to claim 1, wherein said vector includes a nucleic acid cassette having a nucleic acid sequence coding for a protein or polypeptide selected from the group consisting of TGF-P, a soluble form of cytokine receptor, and an antisense RNA.

43. A method for treating psoriasis comprising the step of in vivo transduction of epidermal cells with a keratin K6 inducible vector according to claim 5, wherein said vector includes a nucleic acid cassette having a nucleic acid sequence coding for a protein or polypeptide selected from the group consisting of TGF-p, a soluble for of cytokine receptor, and an antisense RNA.

44. The method of claims 42 or 43 wherein the cassette contains the sequence for 25 TGF-p.

45. The method of claims 42 or 43 wherein the cassette contains a soluble for of cytokine receptor selected from the group consisting of IL-1, IL-6 and 11-8.

46. The method of claims 42 or 43 wherein the cassette contains antisense RNA to TGF-a, IL-1, IL-6 or IL-8. S" 30 47. A method of treating cancer of squamours epithelia comprising the step of in vivo transduction of squamous epithelia cells with a loricrin constitutive vector according to claim 1, or a keratin K6 vector according to claim 5, said vector includes a nucleic acid S: cassette having a nucleic acid sequence coding for an antisense RNA.

48. The method of claim 47 wherein the squamous epithelia cells are selected from the group of cells consisting of epidermis, oral, esophageal, vagina, tracheal and corneal epithelia.

49. The method of claim 47 for treating skin cancer wherein transduction of epidermal cells is with a loricrin constitutive vector and said nucleic acid cassette has a [N:\LIBU]23112:men nucleic acid sequence coding for an antisense RNA for the E6 or E7 gene of human papilloma virus. The method of claim 47 for treating skin cancer wherein transduction of epidermal cells is with a loricrin constitutive vector and said nucleic acid cassette has a nucleic acid sequence coding for the normal p53 protein.

51. The method of claim 47 for treating skin cancer wherein transduction of epidermal cells is with a keratin K6 vector and said nucleic acid cassette has a nucleic acid sequence coding for an antisense RNA for the E6 or E7 gene of human papilloma virus.

52. The method of claim 47 for treating skin cancer wherein transduction of epidermal cells is with a keratin K6 vector and said nucleic acid cassette has a nucleic acid sequence coding for the normal p53 protein.

53. The vector according to claim 1, 4 or 5, further including a Vitamin D regulatory element.

54. The vector of claim 53, wherein the Vitamin D regulatory element is from the human K1 keratin gene. A method for vaccination comprising the step of the in vivo transduction of epidermal cells with a loricrin constitutive vector according to claim 1, or a keratin K6 inducible vector according to claim 5, wherein said vector includes a nucleic acid cassette having a nucleic acid sequence coding for a protein or polypeptide which induces an immunological response.

56. The method of claim 55, wherein the cassette includes a sequence for a viral capsid protein.

57. The method of claim 56, wherein the capsid protein is from the human 25 papilloma virus. t

58. A transgenic non-human animal containing the vector of claims 1, 4 or 5 in its germ and somatic cells, wherein said vector was introduced into said animal or an ancestor of said animal at an embryonic stage and the nucleic acid cassette of said vector is only expressed in squamous epithelia. 30 59. A loricrin constitutive vector for efficient expression of a nucleic acid sequence in epidermal cells substantially as hereinbefore described with reference to any one of the Examples. *60. A keratin K6 inducible vector for regulated expression of a nucleic acid sequence in epidermal cells substantially as hereinbefore described with reference to any one of the Examples. Dated 29 April, 1996 Baylor College of Medicine Patent Attorneys for the Applicant/Nominated Person SSPRUSON FERGUSON [N:\LIBU]23112:mcn