JP5451628B2 - プロテインホスファターゼ阻害剤 - Google Patents
プロテインホスファターゼ阻害剤 Download PDFInfo
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- JP5451628B2 JP5451628B2 JP2010532795A JP2010532795A JP5451628B2 JP 5451628 B2 JP5451628 B2 JP 5451628B2 JP 2010532795 A JP2010532795 A JP 2010532795A JP 2010532795 A JP2010532795 A JP 2010532795A JP 5451628 B2 JP5451628 B2 JP 5451628B2
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- 239000003934 phosphoprotein phosphatase inhibitor Substances 0.000 title claims description 7
- 229940116193 Protein phosphatase inhibitor Drugs 0.000 title claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 33
- 239000003112 inhibitor Substances 0.000 claims description 32
- 150000003839 salts Chemical class 0.000 claims description 20
- -1 triethylsilyl group Chemical group 0.000 claims description 20
- 150000003377 silicon compounds Chemical class 0.000 claims description 12
- 201000011510 cancer Diseases 0.000 claims description 11
- 125000004432 carbon atom Chemical group C* 0.000 claims description 11
- 239000003814 drug Substances 0.000 claims description 9
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 claims description 9
- 125000000217 alkyl group Chemical group 0.000 claims description 8
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 4
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 4
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 4
- 229940124597 therapeutic agent Drugs 0.000 claims description 4
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 3
- 101000742054 Homo sapiens Protein phosphatase 1D Proteins 0.000 claims description 2
- 125000004043 oxo group Chemical group O=* 0.000 claims description 2
- 125000000037 tert-butyldiphenylsilyl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1[Si]([H])([*]C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 2
- 125000000025 triisopropylsilyl group Chemical group C(C)(C)[Si](C(C)C)(C(C)C)* 0.000 claims description 2
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 2
- 102100038675 Protein phosphatase 1D Human genes 0.000 claims 1
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 138
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- 238000006243 chemical reaction Methods 0.000 description 40
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- 230000002401 inhibitory effect Effects 0.000 description 32
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 27
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- 238000005160 1H NMR spectroscopy Methods 0.000 description 14
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- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 14
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
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- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 12
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- 235000019270 ammonium chloride Nutrition 0.000 description 10
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- QKNYBSVHEMOAJP-UHFFFAOYSA-N 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydron;chloride Chemical compound Cl.OCC(N)(CO)CO QKNYBSVHEMOAJP-UHFFFAOYSA-N 0.000 description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 108700019535 Phosphoprotein Phosphatases Proteins 0.000 description 9
- 102000045595 Phosphoprotein Phosphatases Human genes 0.000 description 9
- SIPUZPBQZHNSDW-UHFFFAOYSA-N bis(2-methylpropyl)aluminum Chemical compound CC(C)C[Al]CC(C)C SIPUZPBQZHNSDW-UHFFFAOYSA-N 0.000 description 9
- 229940125782 compound 2 Drugs 0.000 description 9
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 9
- 235000017557 sodium bicarbonate Nutrition 0.000 description 9
- 206010006187 Breast cancer Diseases 0.000 description 8
- 208000026310 Breast neoplasm Diseases 0.000 description 8
- 101000741929 Caenorhabditis elegans Serine/threonine-protein phosphatase 2A catalytic subunit Proteins 0.000 description 8
- 102000004160 Phosphoric Monoester Hydrolases Human genes 0.000 description 8
- 108090000608 Phosphoric Monoester Hydrolases Proteins 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 8
- 229910052786 argon Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000003818 flash chromatography Methods 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 8
- 125000001424 substituent group Chemical group 0.000 description 7
- PBKONEOXTCPAFI-UHFFFAOYSA-N 1,2,4-trichlorobenzene Chemical compound ClC1=CC=C(Cl)C(Cl)=C1 PBKONEOXTCPAFI-UHFFFAOYSA-N 0.000 description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- 125000002842 L-seryl group Chemical group O=C([*])[C@](N([H])[H])([H])C([H])([H])O[H] 0.000 description 6
- 229940009456 adriamycin Drugs 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 6
- UAOMVDZJSHZZME-UHFFFAOYSA-N diisopropylamine Chemical compound CC(C)NC(C)C UAOMVDZJSHZZME-UHFFFAOYSA-N 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- 230000026731 phosphorylation Effects 0.000 description 6
- 238000006366 phosphorylation reaction Methods 0.000 description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 6
- FPGGTKZVZWFYPV-UHFFFAOYSA-M tetrabutylammonium fluoride Chemical compound [F-].CCCC[N+](CCCC)(CCCC)CCCC FPGGTKZVZWFYPV-UHFFFAOYSA-M 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 206010028980 Neoplasm Diseases 0.000 description 5
- 150000001299 aldehydes Chemical class 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 5
- DEFVIWRASFVYLL-UHFFFAOYSA-N ethylene glycol bis(2-aminoethyl)tetraacetic acid Chemical compound OC(=O)CN(CC(O)=O)CCOCCOCCN(CC(O)=O)CC(O)=O DEFVIWRASFVYLL-UHFFFAOYSA-N 0.000 description 5
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- QKLXBIHSGMPUQS-FGZHOGPDSA-M (3r,5r)-7-[4-(4-fluorophenyl)-2,5-dimethyl-1-phenylpyrrol-3-yl]-3,5-dihydroxyheptanoate Chemical compound CC1=C(CC[C@@H](O)C[C@@H](O)CC([O-])=O)C(C=2C=CC(F)=CC=2)=C(C)N1C1=CC=CC=C1 QKLXBIHSGMPUQS-FGZHOGPDSA-M 0.000 description 4
- 101710169169 Polyprenol monophosphomannose synthase Proteins 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 239000000872 buffer Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- KQIADDMXRMTWHZ-UHFFFAOYSA-N chloro-tri(propan-2-yl)silane Chemical compound CC(C)[Si](Cl)(C(C)C)C(C)C KQIADDMXRMTWHZ-UHFFFAOYSA-N 0.000 description 4
- 239000012230 colorless oil Substances 0.000 description 4
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- ZCSHNCUQKCANBX-UHFFFAOYSA-N lithium diisopropylamide Chemical compound [Li+].CC(C)[N-]C(C)C ZCSHNCUQKCANBX-UHFFFAOYSA-N 0.000 description 4
- VZOPRCCTKLAGPN-ZFJVMAEJSA-L potassium;sodium;(2r,3r)-2,3-dihydroxybutanedioate;tetrahydrate Chemical compound O.O.O.O.[Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O VZOPRCCTKLAGPN-ZFJVMAEJSA-L 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- WLWNRAWQDZRXMB-YLFCFFPRSA-N (2r,3r,4r,5s)-n,3,4,5-tetrahydroxy-1-(4-phenoxyphenyl)sulfonylpiperidine-2-carboxamide Chemical compound ONC(=O)[C@H]1[C@@H](O)[C@H](O)[C@@H](O)CN1S(=O)(=O)C(C=C1)=CC=C1OC1=CC=CC=C1 WLWNRAWQDZRXMB-YLFCFFPRSA-N 0.000 description 3
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- PSWDQTMAUUQILQ-UHFFFAOYSA-N 2-[(6-methoxy-4-methylquinazolin-2-yl)amino]-5,6-dimethyl-1h-pyrimidin-4-one Chemical compound N1=C(C)C2=CC(OC)=CC=C2N=C1NC1=NC(=O)C(C)=C(C)N1 PSWDQTMAUUQILQ-UHFFFAOYSA-N 0.000 description 3
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- 238000002835 absorbance Methods 0.000 description 3
- 125000003342 alkenyl group Chemical group 0.000 description 3
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- OSVHLUXLWQLPIY-KBAYOESNSA-N butyl 2-[(6aR,9R,10aR)-1-hydroxy-9-(hydroxymethyl)-6,6-dimethyl-6a,7,8,9,10,10a-hexahydrobenzo[c]chromen-3-yl]-2-methylpropanoate Chemical compound C(CCC)OC(C(C)(C)C1=CC(=C2[C@H]3[C@H](C(OC2=C1)(C)C)CC[C@H](C3)CO)O)=O OSVHLUXLWQLPIY-KBAYOESNSA-N 0.000 description 3
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- 241000588724 Escherichia coli Species 0.000 description 2
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/695—Silicon compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
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- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
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Description
このように、プロテインホスファターゼの一部、例えばPPM1Dは発がんその他において重要な役割をしているにもかかわらず、その機能や阻害剤についてはほとんど明らかにされていない。
Nat. Genet., 31, 210−215, 2002 Mol. Cell. Biol., 22, 1094−1105, 2002
で表されるケイ素化合物又はその塩を有効成分とするプロテインホスファターゼ阻害剤を提供するものである。
また、本願発明は、上記一般式(1)で表される化合物又はその塩の、医薬の製造のための使用を提供するものである。
また、本願発明は、上記一般式(1)で表される化合物又はその塩を投与する、悪性腫瘍の治療方法を提供するものである。
R6は水素原子を示すか、R8のヒドロキシ基と一緒になって−O−(エーテル結合)を形成してもよく;
R7は水素原子を示し、R8はヒドロキシ基を示すか、R7とR8が一緒になってオキソ基(=O)を形成してもよい。)
式中、脱離基Zとしては、特に制限されないが、クロロ基、ブロモ基、ヨード基、スルホン酸基、アルキルスルホン酸基、アリールスルホン酸基又は過塩素酸基等が挙げられる。塩基としては、トリアルキルアミン、ジアルキルアリールアミン、水素化ナトリウム、メチルリチウム、又はn−ブチルリチウム等が挙げられる。Mは金属イオン、望ましくは、リチウム、ナトリウム、カリウム、又はマグネシウム等のアルカリ金属又はアルカリ土類金属を示す。
さらにまた、本発明化合物(1)は、低分子化合物であることから、免疫原性がなく、かつ経口投与も可能であることから、安全性及びコンプライアンス上も、ヒトを含む哺乳類に対する医薬として有用である。
また、これらの製剤の1日あたりの投与量は、患者の症状、体重、年齢、性別等によって異なり一概には決定できないが、通常成人(体重60kg)1日あたり約0.05〜5000mg程度であり、0.1〜1000mgが好ましく、これを1日1回又は2〜3回程度に分けて投与するのが好ましい。
なお、図1中、PPM1D605は従来PPM1Dと表示されていたものであり、新規アイソフォームであるPPM1D430との混同を避けるため、ここではPPM1D605と表示する。PPM1D欠損マウスでは抗原刺激に対するB細胞及びT細胞の免疫応答の減衰が観察されることから(非特許文献2)、PPM1D阻害剤は免疫抑制剤として有用であり、本発明化合物は臓器移植などにおける免疫抑制剤としても有用である。
さらにPPM1Dはエストロゲン受容体やプロゲステロン受容体などを活性化することが知られていることから(J.Biol.Chem., 281,7089−7101, (2005))、本発明化合物は抗ホルモン薬としても有用である。
無色油状物:1H-NMR(500MHz, CDCl3) δ 1.00-1.15(21H, m), 1.68-1.81(2H, m), 2.28-2.40(2H, m), 3.73-3.78(2H, m), 4.24(2H, dt, J=5.2, 2.3Hz).
本発明化合物(1)のPPM1D阻害活性を測定した。
PPM1Dタンパク質(Protein ID:O15297/cDNA ID:U70385)は触媒ドメイン(1位から420位)をコードしたcDNAをpColdI ベクター(TaKaRa社)に導入し、Hisタグ融合タンパク質として大腸菌を用いて発現させた。精製はBD−TALON樹脂(CLONTECH社)を用いた金属アフィニティークロマトグラフィーによって行い、溶出バッファー(150mM Imidazole, PBS(pH7.5), 500mM NaCl, 10% glycerol, 0.2% ethanol, 1mM 2−mercaptoethanol)を用いて目的タンパク質の溶出を行った。溶出されたPPM1Dタンパク質は透析バッファー(50mM Tris−HCl(pH7.5), 0.1mM EGTA, 0.02% 2−mercaptoethanol)に対して16時間透析した後、50%グリセロールストック(酵素濃度1 μM)として−80℃で保存した。
得られた結果を表1に示す。
PPM1D阻害活性を測定し、本発明化合物(1)のPPM1D阻害活性の選択性を検討した。表2に実施例1の化合物〔化合物1〕及び実施例5の化合物〔化合物2〕の結果を示す。
阻害剤の酵素選択性を解析するため、PPM1Dと同じPPM1ファミリーに属するPPM1Aへの阻害効果を解析し、PPM1Dに対する阻害効果と比較した。PPM1A(Protein ID:P35813/cDNA ID:S87759)の全長(382残基)をコードしたcDNAをpColdIベクターに導入し、PPM1Dと同様にして大腸菌の系を用いて発現・精製した。精製したPPM1A 16 nMに対して阻害活性測定を行った。PPM1Aに対する基質はp38リン酸化ペプチドアナログ(Ac−Asp−Asp−Glu−Nle−Thr(P)−Gly−Tyr(P)−Val−Ala−Thr−Arg−NH2:Thr(P)はリン酸化Thr、Tyr(P)はリン酸化Tyr、NleはNorleucineを示す)を用いた。
阻害剤と基質の混合溶液30μL(66.7μM リン酸化ペプチド基質、各濃度阻害剤、1.7% DMSO(実施例1の被験化合物の場合は1.5% DMSO、0.2% EtOH)、13mM Tris−HCl(pH8.0))を30℃で保温し、4℃の酵素と金属イオンの混合液20μL(40nM PPM1A, 125mM Tris−HCl(pH7.5), 0.25mM EGTA, 0.05% 2−mercaptoethanol, 25mM MnCl2)を加え、30℃で10分間インキュベートすることによりPPM1Aに対する阻害活性を測定した。
また、Ser/Thrホスファターゼファミリー間における阻害剤の酵素選択性を解析するため、PPPファミリーに属するPP2A(Protein ID:P67775/cDNA ID:X12649)への阻害効果を解析した。PP2AはPromega社より購入した。PP2Aに対する基質はp38リン酸化ペプチドアナログ(Ac−Thr−Asp−Asp−Glu−Met−Thr(P)−Gly−Tyr−Val−Ala−Thr−NH2:Thr(P)はリン酸化Thrを示す)を用いた。阻害剤と基質の混合溶液30μL(333.3μM リン酸化ペプチド基質、各濃度阻害剤、1.7%DMSO(実施例1の場合は1.5% DMSO、0.2% EtOH)、13mM Tris−HCl(pH8.0))を30℃で保温し、4℃の酵素と金属イオンの混合液20μL(25mU PP2A, 125mM Tris−HCl(pH7.5), 0.25mM EGTA, 0.05% 2−mercaptoethanol, 75mM MgCl2)を加え、30℃で10分間インキュベートすることによりPP2Aに対する阻害活性を測定した。
各阻害剤最終濃度(0, 0.1, 0.2, 0.4, 1, 2, 4, 10, 40μM)におけるPPM1A、PP2A、PPM1Dの阻害活性を各濃度に対して3回測定し、酵素活性を50%阻害する阻害剤濃度(IC50値)を決定した。
阻害剤原溶液は溶媒(DMSO、(実施例1の被験化合物を用いた場合は90% DMSO、10% EtOH))で希釈し、各濃度の阻害剤溶液を調製した。
酵素活性測定における他の条件は試験例1と同様である。
PPM1DおよびPPM1A、PP2Aに対する阻害剤のIC50値を比較することにより阻害剤の酵素選択性を解析した。
PPM1Dに対する化合物の阻害定数および阻害形式について解析する際、試験例1に示す方法で発現・精製した酵素を用いた。また、基質にはp53の15位リン酸化ペプチドアナログ(Ac−Val−Glu−Pro−Pro−Leu−Ser(P)−Gln−Glu−Thr−Phe−Ser−Asp−Leu−Trp−NH2:Ser(P)はリン酸化Serを示す)を用いた。阻害剤と基質の混合溶液30 μL(各濃度リン酸化ペプチド基質、各濃度阻害剤、1.7% DMSO(実施例1の場合は1.5% DMSO、0.2% EtOH)、13mM Tris−HCl(pH8.0))を30℃で保温し、4℃の酵素と金属イオンの混合液20μL(10nM PPM1D, 125mM Tris−HCl(pH7.5), 0.25mM EGTA, 0.05% 2−mercaptoethanol, 75mM MgCl2)を加え、30℃で10分間インキュベートすることによりPPM1Dに対する阻害活性を測定した。
各リン酸化ペプチド基質濃度(5, 10, 20, 40μM)、各阻害剤最終濃度(0, 0.3, 0.4, 0.6μM(実施例1の化合物〔化合物1〕)または0, 0.4, 1, 2μM(実施例5の化合物〔化合物2〕)で各リン酸化ペプチド基質濃度、阻害濃度におけるPPM1D活性を測定した。BIOMOL GREEN試薬(Biomol社)50μLを反応液に加えることにより酵素反応を停止し、30分後に620 nmの吸光度を測定することでPPM1Dによって遊離したリン酸を検出した。
これらの結果から、Ki(μM)を算出した。
本発明化合物のPPM1D選択性評価について、実施例1の化合物〔化合物1〕を用いて行った結果、PPM1Dに対するIC50値:0.43±0.04μM、PPM1Aに対するIC50値:21±1.7μMであった。
更に、実施例1の化合物〔化合物1〕及び実施例5の化合物〔化合物2〕を用いて行った結果を表2に示す。
このように、本発明化合物のPPM1D阻害活性は、極めて選択性が高かった。
癌抑制タンパク質p53はDNAダメージによって活性化、安定化し、細胞周期停止やアポトーシスに関与する多数のタンパク質の発現を誘導することで、細胞の癌化を防いでいる。p53はリン酸化によって活性化し、特に15位Serのリン酸化はp53の活性化、安定化に重要な役割を果たしていることが報告されている。
PPM1Dはp53の15位リン酸化Serを脱リン酸化することが知られており、スクリーニングの結果得られたPPM1D阻害剤の中で、実施例1の化合物〔化合物1〕又は実施例5の化合物〔化合物2〕を、MCF7細胞(乳癌由来の細胞、PPM1D過剰発現)に添加し、細胞内における阻害剤の効果を測定した。
MCF7細胞をADR(Adriamycin:別名Doxorubicin)刺激し、実施例1の化合物〔化合物1〕(10μM)を加え、12h後のp53の15位Serのリン酸化を観察することで、細胞内における化合物1のPPM1D阻害活性を測定した。なお、コントロールとしてADR刺激をしないものを(−)として同様に行った。
抗p53ポリクローナル抗体であるFL393を用いたIPでp53の濃縮を行い、p53 15位リン酸化SerをWestern Blottingにより検出した。
(方法2)
MCF7細胞にUV照射し(15J/m2)、実施例1の化合物〔化合物1〕又は実施例5の化合物〔化合物2〕(10μM)を加え、24h後のp53の15位Serのリン酸化を観察することで、細胞内における実施例1の化合物〔化合物1〕又は実施例5の化合物〔化合物2〕のPPM1D阻害活性を測定した。p53の15位リン酸化Ser量の変化はWestern Blottingにより検出した。1次抗体として抗リン酸化p53(Ser15)マウスモノクノーナル抗体16−G8(Cell Signaling社)を用い、2次抗体として抗マウスIgG−HRP抗体(GE ヘルスケア バイオサイエンス社)を用いた。なお、コントロールとしてUV刺激をしないものを(−)として同様に行った。p53 15位リン酸化Serを上記方法1と同様にして検出した。
本発明化合物(1)を加えることでリン酸化p53の大きな増加が見られ、p53の活性化が示された(図2及び3)。
本発明化合物(1)のがん細胞に対する効果を確認した。
1.1×105個の乳がん由来MCF7細胞(ATCCから購入)を、DMEM培地(10%FBS, 2mM Glutamine, 100nM penicillin/streptomycin)を用いて、5% CO2,37℃条件下で10cm dishにて18時間培養した後に、PPM1D阻害剤(化合物1:40μM,0.06% DMSO,0.12% EtOH/Mock:0.06% DMSO,0.12% EtOH)を添加した。阻害剤添加72時間後にBIOREVO BZ−8000(キーエンス社)を用いて細胞の透過像を観察した。その後、5mlのPBS(8.1mM Na2HPO4,2.68mM KCl,1.47mM KH2PO4,137mM NaCl,pH7.5)で2回細胞を洗い、0.25% Trypsin/EDTA溶液(GIBCO社)を用いて細胞を回収し、トリパンブルーを加えた後にヘモサイトメーターを用いて細胞数を測定した。
本発明化合物(1)は、がん細胞の増殖抑制作用を有することが示された(図4及び5)。
Claims (8)
- 式(2)
(式中、R4及びR5は同一又は相異って水素原子又は(R1)(R2)(R3)Si−を示し、その少なくとも一方は(R1)(R2)(R3)Si−であり;
R 1 、R 2 びR 3 は同一又は異なって、炭素数1〜12の炭化水素基を示し;
R6は水素原子を示すか、R8のヒドロキシ基と一緒になって−O−(エーテル結合)を形成してもよく;
R7は水素原子を示し、R8はヒドロキシ基を示すか、R7とR8が一緒になってオキソ基(=O)を形成してもよい。)
で表されるケイ素化合物又はその塩。 - 前記ケイ素化合物が、次式(2−1)、(2−2)又は(2−3)
(式中、R 4 、R 5 、R 6 及びR 8 は前記と同じ)
で表されるケイ素化合物である請求項1記載のケイ素化合物又はその塩。 - R 1 、R 2 及びR 3 が、同一又は異なって、炭素数1〜8の直鎖状又は分岐状のアルキル基、炭素数6〜14の芳香族炭化水素基、又はC 6-10 アリール−C 1-6 アルキル基である請求項1又は2記載のケイ素化合物又はその塩。
- (R 1 )(R 2 )(R 3 )Si−が、トリメチルシリル基、トリエチルシリル基、トリ(n−プロピル)シリル基、トリイソプロピルシリル基、トリ(n−ブチル)シリル基、トリ(sec−ブチル)シリル基、トリイソブチルシリル基、tert−ブチルジメチルシリル基、ジメチルフェニルシリル基、メチルジフェニルシリル基、トリフェニルシリル基、又はtert−ブチルジフェニルシリル基である請求項1〜3のいずれか1項記載のケイ素化合物又はその塩。
- 請求項1〜4のいずれか1項記載のケイ素化合物又はその塩を含有する医薬。
- 悪性腫瘍治療薬である請求項5記載の医薬。
- 請求項1〜4のいずれか1項記載のケイ素化合物又はその塩を含有するプロティンホスファターゼ阻害剤。
- 請求項1〜4のいずれか1項記載のケイ素化合物又はその塩を含有するPPM1D阻害剤。
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| PCT/JP2009/005128 WO2010041401A1 (ja) | 2008-10-09 | 2009-10-02 | プロテインホスファターゼ阻害剤 |
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| WO2017156416A1 (en) * | 2016-03-11 | 2017-09-14 | The Brigham And Women's Hospital, Inc. | Compositions and methods for treating chemotherapy resistant cancer |
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| JP2006052185A (ja) * | 2004-08-16 | 2006-02-23 | Hokkaido Univ | ゾアンタミン系アルカロイドの製造方法およびこれに用いる中間体 |
| JP2006316001A (ja) * | 2005-05-13 | 2006-11-24 | Keio Gijuku | ナフトキノン誘導体化合物 |
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| JP2006052185A (ja) * | 2004-08-16 | 2006-02-23 | Hokkaido Univ | ゾアンタミン系アルカロイドの製造方法およびこれに用いる中間体 |
| JP2006316001A (ja) * | 2005-05-13 | 2006-11-24 | Keio Gijuku | ナフトキノン誘導体化合物 |
Non-Patent Citations (5)
| Title |
|---|
| JPN6013061223; Fudan Xuebao, Ziran Kexueban (2005), 44(5), 781-782 * |
| JPN6013061225; 日本化学界講演予稿集, 2009 Mar, Vol.89th, No.2, p.1305 * |
| JPN7013004530; Science, 2004,Vol.305, No.5683, p.495-9 * |
| JPN7013004532; Journal of the ChemicalSociety, Perkin Transactions 1, 2001, No.18, p.2250-2256 * |
| JPN7013004534; Chemical Communications(Cambridge), 2000, No.16, p.1463-1464 * |
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| US20110288050A1 (en) | 2011-11-24 |
| WO2010041401A1 (ja) | 2010-04-15 |
| CN102209547A (zh) | 2011-10-05 |
| US8759323B2 (en) | 2014-06-24 |
| EP2351571A1 (en) | 2011-08-03 |
| JPWO2010041401A1 (ja) | 2012-03-01 |
| EP2351571A4 (en) | 2012-08-01 |
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