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JP6835899B2 - Method for culturing UCP1-expressing cells - Google Patents
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JP6835899B2 - Method for culturing UCP1-expressing cells - Google Patents

Method for culturing UCP1-expressing cells Download PDF

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JP6835899B2
JP6835899B2 JP2019065492A JP2019065492A JP6835899B2 JP 6835899 B2 JP6835899 B2 JP 6835899B2 JP 2019065492 A JP2019065492 A JP 2019065492A JP 2019065492 A JP2019065492 A JP 2019065492A JP 6835899 B2 JP6835899 B2 JP 6835899B2
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匠 高岡
匠 高岡
謙太郎 高垣
謙太郎 高垣
漆畑 直樹
直樹 漆畑
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Biomimetics Sympathies Inc
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Description

本発明は,UCP1発現細胞の培養技術に関する。 The present invention relates to a technique for culturing UCP1-expressing cells.

脂肪細胞には,エネルギーの蓄積に関わる白色脂肪細胞と,エネルギー消費に関わる褐色脂肪細胞があることが知られている。また,褐色脂肪細胞と同様に,エネルギー消費に関わるベージュ細胞という細胞も知られている。これらの細胞(褐色脂肪細胞及び/又はベージュ細胞:UCP1発現細胞)は,たんぱく質「UCP1」を発現するという特徴を有している。たんぱく質UCP1は脂肪に由来するエネルギーを燃焼させ,熱に変換する性質を有する。自力で暖を取ることが出来ない新生児は多くの褐色脂肪を持つが,成長するにつれ褐色脂肪は減少する。
ここで,成人の体内にUCP1発現細胞が存在すれば,エネルギーが多く消費され,肥満及び肥満に伴うメタボリックシンドロームが改善することが期待されている。
It is known that adipocytes include white adipocytes involved in energy storage and brown adipocytes involved in energy consumption. In addition, like brown adipocytes, beige cells, which are involved in energy consumption, are also known. These cells (brown adipose cells and / or beige cells: UCP1-expressing cells) are characterized by expressing the protein "UCP1". The protein UCP1 has the property of burning energy derived from fat and converting it into heat. Newborns who cannot keep warm on their own have a lot of brown fat, but as they grow up, the brown fat decreases.
Here, if UCP1-expressing cells are present in the body of an adult, a large amount of energy is consumed, and it is expected that obesity and metabolic syndrome associated with obesity will be improved.

成人の体内にUCP1発現細胞を存在させるために,各種幹細胞をUCP1発現細胞に分化誘導した後,移植する手法が考えられる。
公知技術としてiPS細胞から褐色脂肪細胞を誘導する技術が提案されている。しかし,未分化のiPS細胞は奇形腫(腫瘍)を生じる恐れがあり,未分化のiPS細胞を完全に除去する技術は現時点では確立していない。そのため,iPS細胞を移植する手法は安全面で問題がある。
In order to allow UCP1-expressing cells to exist in the body of an adult, a method of inducing differentiation of various stem cells into UCP1-expressing cells and then transplanting them can be considered.
As a known technique, a technique for inducing brown adipocytes from iPS cells has been proposed. However, undifferentiated iPS cells may cause teratomas (tumors), and a technique for completely removing undifferentiated iPS cells has not been established at this time. Therefore, the method of transplanting iPS cells has a safety problem.

ここで,間葉系幹細胞は白色脂肪,骨,軟骨等に分化することが知られている。そして間葉系幹細胞は,移植片対宿主病(GvHD)の治療薬として静脈内に投与されており,歯茎内への移植の実績が多々存在する。そのため,間葉系幹細胞の投与或いは移植は,安全面で問題がないと考えられている。そのため,間葉系幹細胞から比較的容易に大量のUCP1発現細胞を培養することが出来れば,肥満及び肥満に伴うメタボリックシンドロームに対して画期的な治療を行うことが可能である。
しかし,現状では間葉系幹細胞から比較的容易に大量のUCP1発現細胞を培養する技術は提案されていない。
また,間葉系幹細胞以外の組織或いは細胞を培養してUCP1発現細胞を得ることも可能であるが,その様なUCPI発現細胞を比較的容易且つ大量に培養する技術も未だに提案されていない。
Here, mesenchymal stem cells are known to differentiate into white adipose tissue, bone, cartilage, and the like. Mesenchymal stem cells are intravenously administered as a therapeutic agent for graft-versus-host disease (GvHD), and there are many achievements in transplantation into the gums. Therefore, administration or transplantation of mesenchymal stem cells is considered to have no safety problem. Therefore, if a large amount of UCP1-expressing cells can be cultured from mesenchymal stem cells relatively easily, it is possible to perform epoch-making treatment for obesity and metabolic syndrome associated with obesity.
However, at present, no technique has been proposed for culturing a large amount of UCP1-expressing cells from mesenchymal stem cells relatively easily.
Further, although it is possible to obtain UCP1-expressing cells by culturing tissues or cells other than mesenchymal stem cells, a technique for culturing such UCPI-expressing cells in a relatively easy and large amount has not yet been proposed.

その他の従来技術として,生体内(in vivo)で熱発生性脂肪細胞を増加させる作用剤が提案されているが(特許文献1参照),係る従来技術は生体外部で熱発生性脂肪細胞を培養することを意図してはいない。
また,線維芽細胞を薬剤で処理してたんぱく質UCP1の発現を誘導できることが報告されているが(非特許文献1参照),一般的な脂肪分化誘導培地に対して4種類の薬剤を添加するという煩雑な操作を必要とする。
As another prior art, an agent that increases thermogenic adipocytes in vivo has been proposed (see Patent Document 1), but the prior art involves culturing thermogenic adipocytes in vitro. Not intended to be.
In addition, it has been reported that fibroblasts can be treated with drugs to induce the expression of protein UCP1 (see Non-Patent Document 1), but four types of drugs are added to a general adipose differentiation-inducing medium. It requires complicated operations.

特開2017−206565号公報JP-A-2017-206565

Takeda Y, Harada Y, Yoshikawa T & Dai P. Direct conversion of human fibroblasts to brown adipocytes by small chemical compounds. Sci. Rep. 7, 4304(2017)Takeda Y, Harada Y, Yoshikawa T & Dai P. Direct conversation of human fibroblasts to brown adipose tissue by small chemical compounds. Sci. Rep. 7, 4304 (2017)

本発明は上述した従来技術の問題点に鑑みて提案されたものであり,間葉系幹細胞或いはその他の細胞(或いは組織)から比較的容易に大量のUCP1発現細胞を培養することが出来るUCP1発現細胞の培養方法の提供を目的としている。 The present invention has been proposed in view of the above-mentioned problems of the prior art, and UCP1 expression capable of culturing a large amount of UCP1-expressing cells from mesenchymal stem cells or other cells (or tissues) relatively easily. The purpose is to provide a method for culturing cells.

本発明のUCP1発現細胞の培養方法は,N−シクロプロピル−5−(2−チエニル)−3−イソキサゾールカルボキシアミド(ISX9)を添加した培地により培養することを特徴としている。
また本発明のUCP1発現細胞は,培地(1−1,1−2)にN−シクロプロピル−5−(2−チエニル)−3−イソキサゾールカルボキシアミド(ISX9)を添加して培養されたことを特徴としている。
ここで,ISX9における「(2−チエニル)」なる文言は,イソキサゾールに結合している炭素(C)から数えて2番目がS(硫黄)になっているチエニル基を意味している。
The method for culturing UCP1-expressing cells of the present invention is characterized by culturing in a medium supplemented with N-cyclopropyl-5- (2-thienyl) -3-isoxazolecarboxyamide (ISX9).
The UCP1-expressing cells of the present invention were cultured by adding N-cyclopropyl-5- (2-thienyl) -3-isoxazolecarboxyamide (ISX9) to the medium (1-1, 1-2). It is characterized by that.
Here, the word "(2-thienyl)" in ISX9 means a thienyl group in which the second is S (sulfur) counting from the carbon (C) bonded to isoxazole.

本発明において,前記培地(1−1,1−2)は,血清培地或いは無血清培地が好ましい。
また本発明において,前記培地(1−1)は,血清培地或いは無血清培地に対して,チアゾリジン系の薬剤(ロシグリタゾン等),環状アデノシン1リン酸(cAMP)経路を活性化する薬剤(フォルスコリン,3−イソブチル−1−メチルキサンチン等),インドメタシン,インスリン,トリヨードサイロニン,又は,糖質コルチコイドを添加した培地であるのが好ましい。
さらに,前記UCP1発現細胞は脂肪由来の間葉系幹細胞であるのが好ましい。
そして,UCP1発現細胞は線維芽細胞から培養されるのが好ましい。
或いは,UCP1発現細胞は脂肪組織から培養されるのが好ましい。
In the present invention, the medium (1-1, 1-2) is preferably a serum medium or a serum-free medium.
Further, in the present invention, the medium (1-1) is a drug (forsulin) that activates a thiazolidine-based drug (rosiglitazone, etc.) or a cyclic adenosine monophosphate (cAMP) pathway with respect to a serum medium or a serum-free medium. Choline, 3-isobutyl-1-methylxanthin, etc.), indomethacin, insulin, triiodosilonine, or sugar corticoid is preferably added to the medium.
Furthermore, the UCP1-expressing cells are preferably adipose-derived mesenchymal stem cells.
Then, the UCP1-expressing cells are preferably cultured from fibroblasts.
Alternatively, UCP1-expressing cells are preferably cultured from adipose tissue.

本発明の実施に際して,チアゾリジン系の薬剤(ロシグリタゾン等)を添加した血清培地或いは無血清培地(1−1)で間葉系幹細胞(2S)を培養し,その後,当該培地(1−1)にN−シクロプロピル−5−(2−チエニル)−3−イソキサゾールカルボキシアミドを添加してさらに培養を続けることが出来る。 In carrying out the present invention, mesenchymal stem cells (2S) were cultured in a serum medium or serum-free medium (1-1) supplemented with a thiazolidine-based drug (rosiglitazone, etc.), and then the medium (1-1). N-Cyclopropyl-5- (2-thienyl) -3-isoxazolecarboxyamide can be added to the culture medium to continue the culture.

上述の構成を具備する本発明によれば,培地(1−1)に脂肪滴が形成され,脂肪分化培地による脂肪分化誘導が好適に行われる。
そして,形成された脂肪滴を有する細胞(脂肪細胞)において,たんぱく質UCP1(脱共役たんぱく質の一つのパターン)の遺伝子発現が確認されるので,形成された脂肪細胞はUCP1発現細胞である。
すなわち本発明によれば,生体外で幹細胞からUCP1発現細胞を簡単に培養することが出来る。
According to the present invention having the above-mentioned structure, lipid droplets are formed on the medium (1-1), and the induction of adipose differentiation by the adipose differentiation medium is preferably performed.
Then, since the gene expression of protein UCP1 (one pattern of uncoupling protein) is confirmed in the cells (adipocytes) having the formed lipid droplets, the formed adipocytes are UCP1-expressing cells.
That is, according to the present invention, UCP1-expressing cells can be easily cultured from stem cells in vitro.

ここで,培養に用いられる培地(1−1)は一般的な脂肪誘導培地であり,添加されるのはN−シクロプロピル−5−(2−チエニル)−3−イソキサゾールカルボキシアミド(ISX9)のみであるため,複雑な操作或いは処理を必要とせず,簡易にUCP1発現細胞を培養することが出来る。
そして,生体外で簡易にUCP1発現細胞を培養出来る本発明によれば,大量のUCP1発現細胞を培養することが可能であり,培養されたUCP1発現細胞を移植することにより,安全且つ効果的に,肥満及び肥満に伴うメタボリックシンドロームに対して治療することが出来る。
Here, the medium (1-1) used for culturing is a general fat-inducing medium, and N-cyclopropyl-5- (2-thienyl) -3-isoxazolecarboxyamide (ISX9) is added. ) Only, so UCP1-expressing cells can be easily cultured without requiring complicated operations or treatments.
According to the present invention, which can easily culture UCP1-expressing cells in vitro, it is possible to culture a large amount of UCP1-expressing cells, and by transplanting the cultured UCP1-expressing cells, it is safe and effective. , Can be treated for obesity and metabolic syndrome associated with obesity.

本発明の第1実施形態を示す説明図である。It is explanatory drawing which shows the 1st Embodiment of this invention. 本発明の第1実施形態における手順を示すフローチャートである。It is a flowchart which shows the procedure in 1st Embodiment of this invention. 実験例1の結果を示す図である。It is a figure which shows the result of Experimental Example 1. 実験例2の結果を示す図である。It is a figure which shows the result of Experimental Example 2. 本発明の第2実施形態を示す説明図である。It is explanatory drawing which shows the 2nd Embodiment of this invention. 本発明の第2実施形態における手順を示すフローチャートである。It is a flowchart which shows the procedure in 2nd Embodiment of this invention. 実験例3の結果を示す図である。It is a figure which shows the result of Experimental Example 3. 実験例4の結果を示す図である。It is a figure which shows the result of Experimental Example 4.

最初に図1,図2を参照して,本発明の第1実施形態について説明する。
本発明の第1実施形態に係る培養方法の概要を示す図1において,培養容器3には一般的な脂肪誘導培地1−1が充填されており,当該培地で被験者Mから採取した細胞2(例えば脂肪細胞)を処理設備10で処理して得た脂肪由来の幹細胞2Sが培養される。ここで,幹細胞2Sは脂肪由来の間葉系幹細胞に限定される訳ではなく,臍帯由来の間葉系幹細胞,歯髄由来の間葉系幹細胞,骨髄由来の間葉系幹細胞,羊膜由来の間葉系幹細胞,胎盤由来の間葉系幹細胞であっても良い。
一般的な脂肪誘導培地1−1は,血清培地或いは無血清培地に対して,チアゾリジン系の薬剤(ロシグリタゾン等),環状アデノシン1リン酸(cAMP)経路を活性化する薬剤(フォルスコリン,3−イソブチル−1−メチルキサンチン等),インドメタシン,インスリン,トリヨードサイロニン,又は,糖質コルチコイドの何れかを添加した培地を採用することが出来る。
First, the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
In FIG. 1 showing an outline of the culture method according to the first embodiment of the present invention, the culture vessel 3 is filled with a general fat-inducing medium 1-1, and cells 2 (cells 2 collected from subject M in the medium). For example, adipocytes) are treated in the treatment facility 10 to obtain fat-derived stem cells 2S, which are cultured. Here, the stem cell 2S is not limited to adipose-derived mesenchymal stem cells, but is umbilical band-derived mesenchymal stem cells, dental pulp-derived mesenchymal stem cells, bone marrow-derived mesenchymal stem cells, and sheep membrane-derived mesenchymal stem cells. It may be a lineage stem cell or a mesenchymal stem cell derived from the placenta.
General fat induction medium 1-1 is a drug that activates the thiazolidine-based drug (rosiglitazone, etc.) and the cyclic adenosine monophosphate (cAMP) pathway (forskolin, 3) with respect to the serum medium or serum-free medium. -Isobutyl-1-methylxanthin, etc.), indomethacin, insulin, triiodosilonine, or a medium containing any of sugar corticoid can be adopted.

図示の実施形態において,脂肪誘導培地1−1で間葉系幹細胞2Sを培養する工程で,薬剤N−シクロプロピル−5−(2−チエニル)−3−イソキサゾールカルボキシアミド(ISX9)を添加する。上述した様に,ISX9における「(2−チエニル)」なる文言は,イソキサゾールに結合しているC(炭素)から数えて2番目がS(硫黄)になっているチエニル基を意味している。
培養した間葉系幹細胞2Sにおいて脂肪滴を有する細胞(脂肪細胞)が生成されたか否か,すなわち,培養されたのが脂肪細胞に分化した細胞であるか否かを確認するため,例えば顕微鏡4が使用される。もちろん,顕微鏡以外の手段であって,脂肪への分化を確認する機能を有する機器であれば,顕微鏡4に代えて使用することができる。
In the illustrated embodiment, the drug N-cyclopropyl-5- (2-thienyl) -3-isoxazolecarboxyamide (ISX9) was added in the step of culturing the mesenchymal stem cells 2S in the fat induction medium 1-1. To do. As described above, the word "(2-thienyl)" in ISX9 means a thienyl group in which the second is S (sulfur) counting from C (carbon) bonded to isoxazole.
In order to confirm whether or not cells having adipocytes (adipocytes) were generated in the cultured mesenchymal stem cells 2S, that is, whether or not the cultured cells were differentiated into adipocytes, for example, a microscope 4 Is used. Of course, any device other than a microscope that has a function of confirming differentiation into fat can be used instead of the microscope 4.

第1実施形態において,間葉系幹細胞を培養して分化した脂肪細胞がUCP1発現細胞であるか否かは,脱共役たんぱく質の一つのパターンであるUCP1の遺伝子発現の有無で判定する。そして,たんぱく質UCP1の発現の有無を確認する手法として,定量PCR(ポリメラーゼ連鎖反応)法を用いている。図1において,符号PCRは,定量PCR法を実施する設備を示す。
定量PCR法の前処理として,脂肪細胞よりRNA(リボ核酸)を抽出し,逆転写反応(すなわち,RNAからcDNAの合成)を行ってcDNA(mRNAに相補的なDNA)の調製を行う。得られたcDNAを用いてPCR反応を行い,たんぱく質UCP1の発現量を測定する。
上述した様に,たんぱく質UCP1はUCP1発現細胞にのみ存在し,白色脂肪細胞には存在しない。そしてUCP1発現細胞は,たんぱく質UCP1の作用によって脂肪を燃焼させ,高効率で熱に変換する(エネルギーを消費する)。
定量PCR法による確認の結果,間葉系幹細胞を培養して形成された脂肪滴を有する細胞(脂肪細胞)において,UCP1の遺伝子発現が確認されれば,形成された脂肪細胞はUCP1発現細胞であることが確認できる。
なお,定量PCR法を実施する設備に代えて,ウエスタンブロット法を実施する設備,或いは免疫染色法を実施する設備を用いても良い。
In the first embodiment, whether or not the adipocytes differentiated by culturing mesenchymal stem cells are UCP1-expressing cells is determined by the presence or absence of UCP1 gene expression, which is one pattern of uncoupling protein. Then, as a method for confirming the presence or absence of expression of the protein UCP1, a quantitative PCR (polymerase chain reaction) method is used. In FIG. 1, code PCR indicates equipment for carrying out the quantitative PCR method.
As a pretreatment of the quantitative PCR method, RNA (ribonucleic acid) is extracted from fat cells and reverse transcription reaction (that is, synthesis of cDNA from RNA) is performed to prepare cDNA (DNA complementary to mRNA). A PCR reaction is carried out using the obtained cDNA to measure the expression level of the protein UCP1.
As mentioned above, the protein UCP1 is present only in UCP1-expressing cells and not in white adipocytes. Then, UCP1-expressing cells burn fat by the action of protein UCP1 and convert it into heat with high efficiency (consume energy).
As a result of confirmation by the quantitative PCR method, if UCP1 gene expression is confirmed in cells (adipocytes) having lipid droplets formed by culturing mesenchymal stem cells, the formed adipocytes are UCP1-expressing cells. It can be confirmed that there is.
In addition, instead of the equipment for carrying out the quantitative PCR method, the equipment for carrying out the Western blotting method or the equipment for carrying out the immunostaining method may be used.

次に,主として図2を参照して,第1実施形態で間葉系幹細胞を培養してたんぱく質UCP1の遺伝子発現を確認する手順について説明する。
図2において,ステップS1では,培養容器3に一般的な脂肪誘導培地1−1を充填する。そしてステップS2に進む。
ステップS2では,一般的な脂肪誘導培地1−1が充填された培養容器3に,脂肪由来の間葉系幹細胞2Sを供給する。この幹細胞2Sは,処理設備10において,被験者から採取した脂肪細胞2に公知の処理を施すことにより得られる。図示の実施形態では,幹細胞2Sは脂肪由来の間葉系幹細胞であるが,上述した様にその他の幹細胞であっても良い。
Next, a procedure for confirming the gene expression of the protein UCP1 by culturing mesenchymal stem cells in the first embodiment will be described mainly with reference to FIG.
In FIG. 2, in step S1, the culture vessel 3 is filled with a general fat-inducing medium 1-1. Then, the process proceeds to step S2.
In step S2, the fat-derived mesenchymal stem cells 2S are supplied to the culture vessel 3 filled with the general adipose-inducing medium 1-1. The stem cells 2S can be obtained by subjecting the adipocytes 2 collected from the subject to a known treatment in the processing facility 10. In the illustrated embodiment, the stem cell 2S is an adipose-derived mesenchymal stem cell, but may be another stem cell as described above.

ステップS3では,前記培地1−1で間葉系幹細胞2Sを培養する。培養する際に,培地1−1に,薬剤ISX9(N−シクロプロピル−5−(2−チエニル)−3−イソキサゾールカルボキシアミド)を添加する。
ステップ3における培養期間と薬剤ISX9を添加する時期については,例えば,培地1−1で間葉系幹細胞2Sを1週間培養する。そして薬剤ISX9を添加して,添加後,さらに1週間培養する。ここで,培養期間(例えば,薬剤ISX9添加前の1週間と,添加後の1週間),薬剤ISX9の添加時期は,培養実験等によりケース・バイ・ケースで決定することが出来る。
In step S3, the mesenchymal stem cells 2S are cultured in the medium 1-1. Upon culturing, the drug ISX9 (N-cyclopropyl-5- (2-thienyl) -3-isoxazolecarboxyamide) is added to medium 1-1.
Regarding the culture period in step 3 and the timing of adding the drug ISX9, for example, the mesenchymal stem cells 2S are cultured in medium 1-1 for one week. Then, the drug ISX9 is added, and after the addition, the cells are cultured for another week. Here, the culture period (for example, one week before the addition of the drug ISX9 and one week after the addition) and the time of addition of the drug ISX9 can be determined on a case-by-case basis by a culture experiment or the like.

ステップS4では,上述した培養期間の経過後(例えば,薬剤ISX9を添加後,1週間培養した後)に,培養した間葉系幹細胞2Sに脂肪滴が形成されか否か,すなわち,培養された幹細胞が脂肪細胞に分化したか否かを確認する。幹細胞が脂肪細胞に分化したか否かを確認するのは,例えば顕微鏡4を使用して行うことが出来る。図示の実施形態では,培養した間葉系幹細胞2Sの顕微鏡写真を解析して,脂肪滴の有無を確認している。
ここで,ステップS4で脂肪滴が確認されても,当該脂肪細胞がUCP1発現細胞であるか,或いは,白色脂肪細胞であるかを確認する必要がある。そのため,ステップS5においては,培養した間葉系幹細胞2Sに形成された脂肪滴が,脱共役たんぱく質の一つのパターンであるUCP1の遺伝子を発現しているか否かを確認している。UCP1の遺伝子が発現していれば,分化した脂肪細胞はUCP1発現細胞であることが確認出来る。
なお,UCP1の遺伝子が発現したか否かは,定量PCR法により判断される。
In step S4, whether or not adipocytes were formed in the cultured mesenchymal stem cells 2S after the lapse of the above-mentioned culture period (for example, after adding the drug ISX9 and culturing for 1 week), that is, the cells were cultured. Check if the stem cells have differentiated into adipocytes. Whether or not the stem cells have differentiated into adipocytes can be confirmed by using, for example, a microscope 4. In the illustrated embodiment, micrographs of cultured mesenchymal stem cells 2S are analyzed to confirm the presence or absence of lipid droplets.
Here, even if lipid droplets are confirmed in step S4, it is necessary to confirm whether the adipocytes are UCP1-expressing cells or white adipocytes. Therefore, in step S5, it is confirmed whether or not the lipid droplets formed on the cultured mesenchymal stem cells 2S express the UCP1 gene, which is one pattern of uncoupling protein. If the UCP1 gene is expressed, it can be confirmed that the differentiated adipocytes are UCP1-expressing cells.
Whether or not the UCP1 gene is expressed is determined by the quantitative PCR method.

ここで,ステップS3で培養中に薬剤ISX9を添加することにより,UCP1の遺伝子の発現が促進される。
薬剤ISX9の添加時期については,培地(例えば一般的な脂肪分化誘導培地)の組成により,脂肪由来の間葉系幹細胞2Sを一般的な脂肪分化誘導培地1−1を充填した培養容器3に供給する以前の段階で,一般的な脂肪分化誘導培地1−1に薬剤ISX9を添加しても,たんぱく質UCP1を発現させることが可能である。
換言すれば,ステップS1の一般的な脂肪分化誘導培地1−1の充填と同時に薬剤ISX9を添加しても,たんぱく質UCP1を発現させることが可能である。そして,培養容器3に一般的な脂肪分化誘導培地1−1を充填した(ステップS1)後,脂肪由来の間葉系幹細胞2Sを供給する(ステップS2)以前の段階で薬剤ISX9を添加しても,たんぱく質UCP1を発現させることが可能である。さらにステップS2で脂肪由来の間葉系幹細胞2Sを供給する際に薬剤ISX9を添加しても,たんぱく質UCP1の遺伝子を発現させることが可能である。
Here, by adding the drug ISX9 during the culture in step S3, the expression of the UCP1 gene is promoted.
Regarding the timing of addition of the drug ISX9, fat-derived mesenchymal stem cells 2S are supplied to a culture vessel 3 filled with a general adipose differentiation-inducing medium 1-1 according to the composition of the medium (for example, a general adipose differentiation-inducing medium). It is possible to express the protein UCP1 even if the drug ISX9 is added to a general adipose differentiation-inducing medium 1-1 before the above.
In other words, the protein UCP1 can be expressed even if the drug ISX9 is added at the same time as the filling of the general adipose differentiation-inducing medium 1-1 in step S1. Then, after filling the culture vessel 3 with a general adipose differentiation-inducing medium 1-1 (step S1), the drug ISX9 is added at a stage prior to supplying the adipose-derived mesenchymal stem cells 2S (step S2). It is also possible to express the protein UCP1. Further, even if the drug ISX9 is added when supplying the adipose-derived mesenchymal stem cells 2S in step S2, the gene of the protein UCP1 can be expressed.

次に,図1,図2の実施形態であって,被験者Mから採取した脂肪細胞2から得た脂肪由来の間葉系幹細胞2Sを培養する実験例について説明する。
[実験例1]
2つの培養容器3のそれぞれに,後述する組成の一般的な脂肪分化誘導培地1−1(血清を含む血清培地)を充填した。そして,被験者Mから採取した脂肪細胞2を処理設備10で処理して得た幹細胞2Sを培養した。そして,当該幹細胞2Sにより試料1,試料2を作成した。
試料1では,間葉系幹細胞2Sを1週間培養し,一般的な脂肪分化誘導培地1−1に薬剤ISX9を添加して,さらに1週間培養を行った。一方,試料2では,間葉系幹細胞2Sを1週間培養し,その後,当該一般的な脂肪分化誘導培地1−1に薬剤ISX9を添加せずに,さらに1週間培養を行った。
培養後,試料1,試料2の双方において,脂肪滴を有する細胞(脂肪細胞)が確認された。すなわち,試料1,試料2の双方において,間葉系幹細胞2Sは脂肪細胞に分化したことが確認できた。
試料1,試料2の双方において確認された脂肪滴を有する細胞(脂肪細胞)よりRNA(リボ核酸)を抽出し,逆転写反応を行ってRNAからcDNAを合成し,cDNA(mRNAに相補的なDNA)を調製した。得られたcDNAを用いて定量PCR法を行い,試料1,試料2の脂肪細胞からUCP1の遺伝子発現量を測定した。
Next, an experimental example of culturing fat-derived mesenchymal stem cells 2S obtained from adipocytes 2 collected from subject M in the embodiments of FIGS. 1 and 2 will be described.
[Experimental Example 1]
Each of the two culture vessels 3 was filled with a general fat differentiation-inducing medium 1-1 (serum medium containing serum) having a composition described later. Then, the stem cells 2S obtained by treating the adipocytes 2 collected from the subject M with the processing equipment 10 were cultured. Then, Sample 1 and Sample 2 were prepared from the stem cell 2S.
In Sample 1, mesenchymal stem cells 2S were cultured for 1 week, the drug ISX9 was added to a general adipose differentiation-inducing medium 1-1, and the cells were further cultured for 1 week. On the other hand, in Sample 2, mesenchymal stem cells 2S were cultured for 1 week, and then cultured for another week without adding the drug ISX9 to the general adipose differentiation-inducing medium 1-1.
After culturing, cells having lipid droplets (adipocytes) were confirmed in both Sample 1 and Sample 2. That is, it was confirmed that the mesenchymal stem cells 2S differentiated into adipocytes in both Sample 1 and Sample 2.
RNA (ribonucleic acid) is extracted from cells (adipocytes) having lipid droplets confirmed in both sample 1 and sample 2, and reverse transcription reaction is performed to synthesize cDNA from RNA, which is complementary to mRNA. DNA) was prepared. A quantitative PCR method was performed using the obtained cDNA, and the gene expression level of UCP1 was measured from the adipocytes of Sample 1 and Sample 2.

試料1,試料2の顕微鏡写真から脂肪滴を有する細胞(脂肪細胞)の形成が明確に確認され,脂肪分化培地1−1による脂肪分化誘導は良好に行われたことが分かった。
定量PCR法の結果を図3に示すが,UCP1の遺伝子発現は薬剤ISX9を添加した試料1のみで確認され,薬剤ISX9を添加しない試料2ではたんぱく質UCP1の遺伝子発現は確認されなかった。なお,図3で,縦軸の「Relative Quantity」はたんぱく質UCP1の遺伝子発現量を示すパラメータであり,試料1(ISX9を添加した試料)におけるたんぱく質UCP1の遺伝子発現量を1とする相対的な数値である。
図3では明示されていないが,実験例1において,脂肪分化誘導培地1−1に間葉系幹細胞2Sを供給する以前の段階で薬剤ISX9を添加した場合,及び,脂肪分化誘導培地1−1に間葉系幹細胞2Sを供給するのと同時に薬剤ISX9を脂肪分化誘導培地1−1に添加した場合についても,たんぱく質UCP1の遺伝子発現が確認出来た。
実験例1で使用した一般的な脂肪分化誘導培地1−1の組成を,以下で示す。
DMEM‐high glucose 500ml
デキサメサゾン 1μM
インドメタシン 50μM
インスリン 0.01mg/ml
3‐イソブチル‐メチルキサンチン 0.5mM
FBS(ウシ胎児血清) 10%
From the micrographs of Samples 1 and 2, the formation of cells (adipocytes) having lipid droplets was clearly confirmed, and it was found that the induction of adipose differentiation by the adipose differentiation medium 1-1 was well performed.
The results of the quantitative PCR method are shown in FIG. 3. The gene expression of UCP1 was confirmed only in the sample 1 to which the drug ISX9 was added, and the gene expression of the protein UCP1 was not confirmed in the sample 2 to which the drug ISX9 was not added. In FIG. 3, "Relative Quantity" on the vertical axis is a parameter indicating the gene expression level of protein UCP1, and is a relative numerical value where the gene expression level of protein UCP1 in sample 1 (sample to which ISX9 is added) is 1. Is.
Although not explicitly shown in FIG. 3, in Experimental Example 1, when the drug ISX9 was added to the adipose differentiation-inducing medium 1-1 before supplying the mesenchymal stem cells 2S, and the adipose differentiation-inducing medium 1-1. The gene expression of the protein UCP1 was also confirmed when the drug ISX9 was added to the adipose differentiation-inducing medium 1-1 at the same time as supplying the mesenchymal stem cells 2S.
The composition of the general fat differentiation-inducing medium 1-1 used in Experimental Example 1 is shown below.
DMEM-high glucose 500ml
Dexamethasone 1 μM
Indomethacin 50 μM
Insulin 0.01 mg / ml
3-Isobutyl-Methylxanthine 0.5 mM
FBS (fetal bovine serum) 10%

[実験例2]
2つの培養容器3のそれぞれに,市販されている無血清培地(ロンザジャパン株式会社製の商品名「MSCGB−CD」)に対して,チアゾリジン系の薬剤であるロシグリタゾンを5μM添加したものを一般的な脂肪誘導培地1−1として充填した。
その後,それぞれに被験者Mから採取した脂肪細胞2を処理設備10で処理して得た幹細胞2Sを培養した。そして,当該幹細胞2Sにより試料3,試料4を作成した。
試料3では,間葉系幹細胞2Sを1週間培養し,その後,一般的な脂肪分化誘導培地1−1に薬剤ISX9を添加して,間葉系幹細胞2Sをさらに1週間培養した。一方,試料4では,間葉系幹細胞2Sを1週間培養し,その後,薬剤ISX9を添加することなく,間葉系幹細胞2Sをさらに1週間培養を行った。
培養後,試料3,試料4の双方において,脂肪滴を有する細胞(脂肪細胞)が確認された。すなわち,試料3,試料4の双方において,間葉系幹細胞2Sは脂肪細胞に分化したことが確認できた。
試料3,試料4の双方において確認された脂肪滴を有する細胞(脂肪細胞)よりRNA(リボ核酸)を抽出し,逆転写反応を行ってRNAからcDNAを合成し,cDNA(mRNAに相補的なDNA)を調製した。得られたcDNAを用いて定量PCR法を行い,試料3,試料4の脂肪細胞からUCP1の遺伝子発現量を測定した。
[Experimental Example 2]
Generally, 5 μM of thiazolidine-based drug rosiglitazone is added to each of the two culture containers 3 to a commercially available serum-free medium (trade name “MSCGB-CD” manufactured by Lonza Japan Co., Ltd.). It was filled as a typical fat induction medium 1-1.
Then, the stem cells 2S obtained by treating the adipocytes 2 collected from the subject M in the processing equipment 10 were cultured in each of them. Then, Samples 3 and 4 were prepared from the stem cells 2S.
In Sample 3, the mesenchymal stem cells 2S were cultured for 1 week, and then the drug ISX9 was added to a general adipose differentiation-inducing medium 1-1, and the mesenchymal stem cells 2S were cultured for another week. On the other hand, in Sample 4, the mesenchymal stem cells 2S were cultured for 1 week, and then the mesenchymal stem cells 2S were cultured for another week without adding the drug ISX9.
After culturing, cells having lipid droplets (adipocytes) were confirmed in both Sample 3 and Sample 4. That is, it was confirmed that the mesenchymal stem cells 2S differentiated into adipocytes in both Samples 3 and 4.
RNA (ribonucleic acid) is extracted from cells (adipocytes) having lipid droplets confirmed in both Samples 3 and 4, and reverse transcription reaction is performed to synthesize cDNA from RNA, which is complementary to mRNA. DNA) was prepared. A quantitative PCR method was performed using the obtained cDNA, and the gene expression level of UCP1 was measured from the adipocytes of Samples 3 and 4.

試料3,試料4の顕微鏡写真から脂肪滴を有する細胞(脂肪細胞)の形成が明確に確認され,脂肪分化培地1−1による脂肪分化誘導は良好に行われたことが分かった。
定量PCR法の結果を図4に示すが,たんぱく質UCP1の遺伝子発現は,薬剤ISX9を添加した試料3のみで確認され,薬剤ISX9を添加しない試料4ではUCP1の遺伝子発現は確認されなかった。
From the micrographs of Samples 3 and 4, the formation of cells (adipocytes) having lipid droplets was clearly confirmed, and it was found that the induction of adipose differentiation by the adipose differentiation medium 1-1 was well performed.
The results of the quantitative PCR method are shown in FIG. 4. The gene expression of the protein UCP1 was confirmed only in the sample 3 to which the drug ISX9 was added, and the gene expression of the UCP1 was not confirmed in the sample 4 to which the drug ISX9 was not added.

実験結果が図示されてはいないが,発明者による実験では,脂肪由来の間葉系幹細胞のみならず,臍帯由来の間葉系幹細胞,歯髄由来の間葉系幹細胞,骨髄由来の間葉系幹細胞,羊膜由来の間葉系幹細胞,胎盤由来の間葉系幹細胞についても,図3,図4で示すのと同様に,たんぱく質UCP1の遺伝子発現は,薬剤ISX9を添加した試料のみで確認され,薬剤ISX9を添加しない試料ではUCP1の遺伝子発現は確認されなかった。 Although the experimental results are not shown, in the experiments by the inventor, not only adipose-derived mesenchymal stem cells, but also umbilical cord-derived mesenchymal stem cells, dental pulp-derived mesenchymal stem cells, and bone marrow-derived mesenchymal stem cells As for the mesenchymal stem cells derived from the umbilical cord and the mesenchymal stem cells derived from the placenta, the gene expression of the protein UCP1 was confirmed only in the sample to which the drug ISX9 was added, as shown in FIGS. No UCP1 gene expression was confirmed in the sample to which ISX9 was not added.

図1〜図4の実施形態においては,被験者Mから例えば脂肪細胞2を採取して,処理設備10で処理して幹細胞2Sを得た。そして,当該幹細胞2Sを培養して,UCP1発現細胞を得ている。
発明者は,幹細胞以外の細胞,例えば線維芽細胞,或いは脂肪組織を被験者から採取し,処理設備10により幹細胞を得ることなく,UCP1発現細胞を大量に培養出来ることを確認している。
被験者から線維芽細胞或いは脂肪組織を採取し,UCP1発現細胞を培養する実施形態について,図5,図6を参照して説明する。
In the embodiments of FIGS. 1 to 4, for example, adipocytes 2 were collected from subject M and processed in the processing equipment 10 to obtain stem cells 2S. Then, the stem cell 2S is cultured to obtain UCP1-expressing cells.
The inventor has confirmed that cells other than stem cells, for example, fibroblasts or adipose tissue, can be collected from a subject, and a large amount of UCP1-expressing cells can be cultured without obtaining stem cells by the processing facility 10.
An embodiment in which fibroblasts or adipose tissue is collected from a subject and UCP1-expressing cells are cultured will be described with reference to FIGS. 5 and 6.

図5において,培養容器3には一般的な培地1−2(例えば無血清培地或いは血清培地)が充填されており,当該培地で被験者Mから採取した組織20(例えば線維芽細胞或いは脂肪組織)を培養する。ここで,組織20は線維芽細胞、脂肪組織に限定される訳ではなく、その他の組織或いは細胞,例えば臍帯,歯髄,骨髄,羊膜,胎盤,その他であっても良い。培地1−2にはISX9が添加されている。
図5では明示されていないが,培養された組織或いは細胞がUCP1を発現しているか否か(UCP1細胞であるか否か)は,第1実施形態と同様に,UCP1の遺伝子発現の有無を,定量PCR(ポリメラーゼ連鎖反応)法を用いて行う。定量PCR法の前処理として,培養された細胞よりRNA(リボ核酸)を抽出し,逆転写反応(すなわち,RNAからcDNAの合成)を行ってcDNA(mRNAに相補的なDNA)の調製を行い,得られたcDNAを用いてPCR反応を行い,たんぱく質UCP1の発現量を測定することは,図1,図2で説明したのと同様である。
そして第1実施形態と同様に,定量PCR法を実施する設備に代えて,ウエスタンブロット法を実施する設備,或いは免疫染色法を実施する設備を用いても良い。
In FIG. 5, the culture medium 3 is filled with a general medium 1-2 (for example, serum-free medium or serum medium), and the tissue 20 (for example, fibroblast or adipose tissue) collected from the subject M in the medium is filled. Is cultured. Here, the tissue 20 is not limited to fibroblasts and adipose tissue, and may be other tissues or cells such as umbilical cord, dental pulp, bone marrow, amniotic membrane, placenta, and the like. ISX9 is added to medium 1-2.
Although not explicitly shown in FIG. 5, whether or not the cultured tissue or cell expresses UCP1 (whether or not it is a UCP1 cell) is determined by whether or not the UCP1 gene is expressed, as in the first embodiment. , Quantitative PCR (polymerase chain reaction) method is used. As a pretreatment for the quantitative PCR method, RNA (ribonucleic acid) is extracted from cultured cells and a reverse transcription reaction (that is, synthesis of cDNA from RNA) is performed to prepare cDNA (DNA complementary to mRNA). , Performing a PCR reaction using the obtained cDNA and measuring the expression level of the protein UCP1 is the same as described in FIGS. 1 and 2.
Then, as in the first embodiment, instead of the equipment for performing the quantitative PCR method, the equipment for performing the Western blotting or the equipment for performing the immunostaining method may be used.

次に,主として図6を参照して,第2実施形態でUCP1発現細胞培養の手順を説明する。
図6において,ステップS11では,培養容器3に一般的な培地1−2を充填し、培地1−2に薬剤ISX9を添加する。そしてステップS12に進む。
ステップS12では,被験者Mから採取した組織(或いは細胞)20を供給して,培養する。ここで,薬剤ISX9は組織20の培養時に培地に添加しても良い。例えば、組織20を1週間培養し、それからISX9を添加し,さらに1週間培養する。
ステップS12に続くステップS13では,培養された細胞20がUCP1発現細胞であるか否かを,定量PCR法により確認する。
Next, the procedure for culturing UCP1-expressing cells will be described in the second embodiment, mainly with reference to FIG.
In FIG. 6, in step S11, the culture vessel 3 is filled with a general medium 1-2, and the drug ISX9 is added to the medium 1-2. Then, the process proceeds to step S12.
In step S12, the tissue (or cell) 20 collected from the subject M is supplied and cultured. Here, the drug ISX9 may be added to the medium when the tissue 20 is cultured. For example, tissue 20 is cultured for 1 week, then ISX9 is added, and the cells are cultured for another week.
In step S13 following step S12, it is confirmed by a quantitative PCR method whether or not the cultured cells 20 are UCP1-expressing cells.

次に,図5,図6の実施形態において,被験者Mから採取した細胞20を用いた実験例3,実験例4について説明する。
[実験例3]
2つの培養容器3(図5参照)のそれぞれに,一般的な培地1−2(血清を含む血清培地)を充填した。そして,被験者から採取した表皮由来の線維芽細胞を培養容器3に供給して,試料5,試料6を作成した。
試料5では,表皮由来線維芽細胞を1週間培養し,その後,当該一般的な脂肪分化誘導培地1−1に薬剤ISX9を添加して,さらに1週間培養を行った。一方,試料6では,表皮由来線維芽細胞を1週間培養し,その後,当該一般的な脂肪分化誘導培地1−1に薬剤ISX9を添加せず,さらに1週間培養を行った。
培養後,試料5,試料6の双方の細胞(脂肪細胞)よりcDNAを調製し,得られたcDNAを用いて定量PCR法を行い,試料5,試料6の脂肪細胞からUCP1の遺伝子発現量を測定した。
Next, in the embodiments of FIGS. 5 and 6, Experimental Examples 3 and 4 using the cells 20 collected from the subject M will be described.
[Experimental Example 3]
Each of the two culture vessels 3 (see FIG. 5) was filled with a general medium 1-2 (serum medium containing serum). Then, epidermis-derived fibroblasts collected from the subjects were supplied to the culture vessel 3 to prepare Samples 5 and 6.
In Sample 5, epidermis-derived fibroblasts were cultured for 1 week, then the drug ISX9 was added to the general adipose differentiation-inducing medium 1-1, and the cells were further cultured for 1 week. On the other hand, in Sample 6, epidermis-derived fibroblasts were cultured for 1 week, and then the general adipose differentiation-inducing medium 1-1 was cultured for another week without adding the drug ISX9.
After culturing, cDNA is prepared from both cells (adipocytes) of Sample 5 and Sample 6, and quantitative PCR method is performed using the obtained cDNA to determine the gene expression level of UCP1 from the adipocytes of Sample 5 and Sample 6. It was measured.

試料5,試料6について,定量PCR法の結果を図7に示すが,UCP1の遺伝子発現は薬剤ISX9を添加した試料5で強く誘導され,薬剤ISX9を添加しない試料6ではたんぱく質UCP1の遺伝子発現は僅かに確認されるのみであった。
なお,実験例3,4と同様に,実験例5において,培地1−2に表皮由来線維芽細胞を供給する以前の段階で薬剤ISX9を添加した場合と,培地1−1に表皮由来線維芽細胞を供給するのと同時に薬剤ISX9を脂肪分化誘導培地1−1に添加した場合についても,たんぱく質UCP1の遺伝子発現が確認出来た。
The results of the quantitative PCR method for Samples 5 and 6 are shown in FIG. 7. The gene expression of UCP1 is strongly induced in Sample 5 to which the drug ISX9 is added, and the gene expression of the protein UCP1 is not found in Sample 6 to which the drug ISX9 is not added. Only a few were confirmed.
Similar to Experimental Examples 3 and 4, in Experimental Example 5, the drug ISX9 was added to the medium 1-2 before supplying the epidermis-derived fibroblasts, and the epidermis-derived fibroblasts were added to the medium 1-1. The gene expression of protein UCP1 was also confirmed when the drug ISX9 was added to the adipose differentiation induction medium 1-1 at the same time as supplying the cells.

[実験例4]
2つの培養容器3(図5参照)のそれぞれに,実験例1で用いられた培地と同様な組成を有する一般的な脂肪分化誘導培地(血清を含む血清培地)を充填した。そして,被験者から採取した脂肪組織(間葉系幹細胞を取り出す処理を行っていない脂肪細胞)を培養容器3に供給して,試料7,試料8を作成した。
試料7では,脂肪組織を1週間培養し,その後,培地に薬剤ISX9を添加して,さらに1週間培養を行った。一方,試料8では,脂肪組織を1週間培養し,その後,培地に薬剤ISX9を添加することなく,脂肪組織をさらに1週間培養を行った。
[Experimental Example 4]
Each of the two culture vessels 3 (see FIG. 5) was filled with a general adipose differentiation-inducing medium (serum containing serum) having the same composition as the medium used in Experimental Example 1. Then, the adipose tissue collected from the subject (adipocytes not subjected to the treatment for extracting mesenchymal stem cells) was supplied to the culture vessel 3 to prepare Samples 7 and 8.
In Sample 7, the adipose tissue was cultured for 1 week, then the drug ISX9 was added to the medium, and the cells were further cultured for 1 week. On the other hand, in Sample 8, the adipose tissue was cultured for one week, and then the adipose tissue was cultured for another week without adding the drug ISX9 to the medium.

培養後,試料7,試料8の双方からcDNAを調製し,定量PCR法により,試料7,試料8の脂肪組織からUCP1の遺伝子発現量を測定した。
定量PCR法の結果を図8に示すが,たんぱく質UCP1の遺伝子発現は,薬剤ISX9を添加した試料7で強く誘導され,薬剤ISX9を添加しない試料8ではUCP1の遺伝子発現は僅かに確認されるのみであった。
実験例4においても、培地に脂肪組織を供給する以前の段階で薬剤ISX9を添加した場合と,培地に脂肪組織を供給するのと同時に薬剤ISX9を添加した場合についても,たんぱく質UCP1の遺伝子発現が確認出来た。
After culturing, cDNA was prepared from both Sample 7 and Sample 8, and the gene expression level of UCP1 was measured from the adipose tissue of Sample 7 and Sample 8 by the quantitative PCR method.
The results of the quantitative PCR method are shown in FIG. 8. The gene expression of the protein UCP1 is strongly induced in the sample 7 to which the drug ISX9 is added, and the gene expression of UCP1 is only slightly confirmed in the sample 8 to which the drug ISX9 is not added. Met.
In Experimental Example 4, the gene expression of protein UCP1 was also observed when the drug ISX9 was added before the adipose tissue was supplied to the medium and when the drug ISX9 was added at the same time as the adipose tissue was supplied to the medium. I was able to confirm.

図示の実施形態によれば,一般的な培地1−1,1−2に被験者Mから採取して処理した間葉系幹細胞2S,或いは被験者Mから採取された線維芽細胞,脂肪組織を供給し,薬剤ISX9(N−シクロプロピル−5−(2−チエニル)−3−イソキサゾールカルボキシアミド)のみを添加して培養することにより,複雑な操作或いは処理を必要とせず,簡易にUCP1発現細胞を培養することが出来る。
そして,生体外で簡易にUCP1発現細胞を培養出来るので,大量のUCP1発現細胞を培養することが可能であり,培養されたUCP1発現細胞を移植することにより,安全且つ効果的に,肥満及び肥満に伴うメタボリックシンドローム,その他の疾病に対して効果的に治療することが可能となることが期待される。
According to the illustrated embodiment, mesenchymal stem cells 2S collected and processed from subject M, or fibroblasts and adipose tissue collected from subject M are supplied to general media 1-1 and 1-2. , Drug ISX9 (N-cyclopropyl-5- (2-thienyl) -3-isoxazolecarboxyamide) is added and cultured, so that no complicated operation or treatment is required, and UCP1-expressing cells can be easily obtained. Can be cultivated.
Since UCP1-expressing cells can be easily cultured in vitro, a large amount of UCP1-expressing cells can be cultured. By transplanting the cultured UCP1-expressing cells, obesity and obesity can be safely and effectively performed. It is expected that it will be possible to effectively treat the associated metabolic syndrome and other diseases.

図示の実施形態はあくまでも例示であり,本発明の技術的範囲を限定する趣旨の記述ではないことを付記する。 It should be added that the illustrated embodiment is merely an example and is not a description intended to limit the technical scope of the present invention.

1−1,1−2・・・一般的な脂肪誘導培地
20・・・脂肪組織
2S・・・間葉系幹細胞
1-1, 1-2 ... General fat induction medium 20 ... Adipose tissue 2S ... Mesenchymal stem cells

Claims (5)

N−シクロプロピル−5−(2−チエニル)−3−イソキサゾールカルボキシアミドを添加した培地により、脂肪、臍帯,歯髄,骨髄,羊膜,胎盤由来間葉系幹細胞、線維芽細胞、または、脂肪組織から培養することを特徴とするUCP1発現細胞の培養方法。 Fat, umbilical cord, pulp, bone marrow, amniotic membrane, placenta-derived mesenchymal stem cells, fibroblasts, or adipose tissue in a medium supplemented with N-cyclopropyl-5- (2-thienyl) -3-isoxazolecarboxyamide A method for culturing UCP1-expressing cells, which comprises culturing from a tissue. 前記培地は無血清培地である請求項1のUCP1発現細胞の培養方法。 The method for culturing UCP1-expressing cells according to claim 1, wherein the medium is a serum-free medium. 前記培地は血清培地である請求項1のUCP1発現細胞の培養方法。 The medium culture method of UCP1 expression cell of claim 1 is a serum culture land. 前記培地は,血清培地或いは無血清培地に対して,チアゾリジン系の薬剤,環状アデノシン1リン酸経路を活性化する薬剤,インドメタシン,インスリン,トリヨードサイロニン,又は,糖質コルチコイドを添加した培地である請求項1のUCP1発現細胞の培養方法。 The medium is a serum medium or a serum-free medium to which a thiazolidine-based drug, a drug that activates the cyclic adenosine monophosphate pathway, indomethacin, insulin, triiodosilonin, or a sugar corticoid is added. A method for culturing UCP1-expressing cells according to claim 1. 前記培地が分化誘導培地である請求項1〜4の何れか1項の培養方法。The culture method according to any one of claims 1 to 4, wherein the medium is a differentiation-inducing medium.
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