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癌の増殖における増殖因子の相互作用とその分子機構

Research Project

Project/Area Number 04151044
Research Category

Grant-in-Aid for Cancer Research

Allocation TypeSingle-year Grants
Research InstitutionHiroshima University

Principal Investigator

田原 榮一  広島大学, 医学部, 教授 (00033986)

Co-Investigator(Kenkyū-buntansha) 加藤 勝  国立がんセンター研究所, 研究員 (50233820)
河野 通明  岐阜薬科大学, 助教授 (00027335)
春日 雅人  神戸大学, 医学部, 教授 (50161047)
伊藤 文昭  摂南大学, 薬学部, 教授 (80111764)
清水 信義  慶應大学, 医学部, 教授 (50162706)
Project Period (FY) 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥19,000,000 (Direct Cost: ¥19,000,000)
Fiscal Year 1992: ¥19,000,000 (Direct Cost: ¥19,000,000)
Keywords肝細胞増殖因子 / c-met / MAPキナーゼ / カルホスチンC / インスリンレセプター / K-sam / FGFレセプター / TGF
Research Abstract

ヒト胃癌細胞株における肝細胞増殖因子(HGF)の生物学的作用を解析した結果、いくつかの新しい知見がみいだされた。即ち、HGFは、パラクリン増殖因子として胃癌細胞の増殖・進展・運動及び形態形成に重要な役割を担っている可能性があり、特にc-met異常発現を示す癌細胞側の接着分子と線維芽細胞由来のHGFとの相互作用が高分化腺癌と低分化腺癌の組織発生に大きく関与している可能性が示された(田原)。また胃癌ではTGFαがc-met遺伝子の誘導を惹起させること、TGFβがHGFの細胞増殖及び運動促進を増強させることが明らかにされた(田原、伊藤)。更に、41kDa・MAPキナーゼの機能がHGFを含む増殖因子の細胞増殖促進に必須であることが示唆され(河野)、その上、HGF遺伝子導入によるマウス肝細胞あるいはMKCK細胞の形質転換が起き、その場合、HGF/c-met系のループが存在することが示された(上原、神田)。
カルホスチンC(Cal-c)は、in vitroでPKCの調節ドメインに結合し光依存的に不活化するが、ヒト扁平上皮癌細胞NA及びヒト腺癌細胞A549を用いての解析により、in vivoではCal-cはPKCを阻害せずEGFレセプターリン酸化とPKCを介するシグナル伝達系を活性化しているという結論が得られた(清水)。次に、インスリンレセプターを介するシグナル伝達系では、他のチロシンキナーゼを内在するレセプターとは異なり、レセプターに直接ではなく、IRS-I蛋白にSH_2ドメインを有する蛋白が結合すると考えられ、一方、EGFレセプターの場合には、GAP及びPI_3キナーゼはその伝達物質としての役割は小さいと考えられた(春日)。サイズの異なるK-sam mRNAの構造解析より、K-sam遺伝子はFGFレセプターファミリーに属する膜貫通型レセプターのみならず分泌型レセプターをコードしていることが明らかにされた(加藤)。

Report

(1 results)
  • 1992 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] Kitadai Y: "GC factor represses transcription of several growth factor/receptor genes and causes growth inhibition of human gastric carcinoma cell lines." Cell Growth & Dfferentiation. 4. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] Ito M: "Growth inhibition of transforming growth factor β on human gastric carcinoma cells:receptor and postreceptor sinaling." Cancer Research. 52. 295-300 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Saeki T: "Differential immunohistichemical detection of amphiregulin and cripto in human normal colon and colorectral tumors." Cancer Research. 52. 3467-3473 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Kameda T: "Tyrosine kinase activity of epidermal growth factor receptor in human gastric carcinomas." Path.Res.Pract.188. 37-43 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Kuniyasu H: "Frequent amplification of the c-met gene in scirrhous type stomach cancer." Biochem.Biophys.Res.Commun.189. 227-232 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Kitadai Y: "The level of a trascription factor Spl in correlated with the expression of EGF receptor in human gastric carcinomas." Biochem.Biophys.Res.Commun.189. 1342-1348 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Kohno M: "Mitogen-induced tyrosine phosphorylation of 41 kDa and 43 kDa proteins.-Potential role in integrating multiple mitogenic signalling pathways." Biochem.J.287. 917-924 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Tsuji K: "Inhibitory effect of taxol,a microtubule stabilizing agent,on induction of DNA synthesis is dependent cell lines and growth factors." Cell Struct.Funct.17. 139-144 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Tsuda H: "Different pattern of chromosomal allele loss in multiple hepatocellulat carcinomas as evidence of their multifocal origin." Cancer Research. 52. 1504-1509 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Tsuda H: "Prognostic factors post-recurrent breast caner:univariate and multivariate analyses including histologic grade and amplification of c-erbB-2proto-oncogene." Jpn.J.Clin.Oncol.22. 244-250 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Katoh.M: "K-sam gene encodes secreted as well as transmembrane receptor tyrosine kinase." Proc.Natl.Acad.Sci.USA. 89. 2960-2964 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Uehara Y: "Expression of a human hepatocyte growth factor/scatter factor cDNA in MDCK epithelial cells influences cell morphology,motility and anchorage-independent growth." J.Cell Biology.117. 889-894 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Sakai K: "Molecular cloning and chromosomal mapping of a cDNA encoding human 80K-L protein: major substrate for protein kinase C." Genomics. 14. 175-178 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Yonezawa K: "In vitro association of phosphatidylinositol 3-kinase activity with the activated insulin receptor tyrosine kinase." J.Biol.Chem.267. 440-446 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Ando A: "Enhanced insulin-induced mitogenesis and mitogen-activated protein kinase activities in mutant insulin receptors with substitution of two COOH-terminal tyrosine autophosphorylation sites by phenylalanine." J.Biol.Chem.267. 12788-12796 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Chatani Y: "Mitogen-induced tyrosine-phosphorylated 41-and 43-kDa proteins are family members of extracellular signal-regulated kinases/microguble-associated protein 2 kinases." J.Biol.Chem.267. 9911-9916 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Chatani Y: "Hepatocyte growth factor rapidly induced the tyrosine phosphorylation of 41-kDa adn 43-kDa proteins mouse keratinocytes." Biochem.Biophys.Res.Commu.185. 860-866 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Okigaki M: "Functional characterization of human hepatocyte growth factor mutans obtained by deletion of structural domains." Biochemistry. 31. 9555-9561 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Yasui W: "Surgical Gynecologic Oncology Edited by E.Burghardt" Thieme Medical Publishers,Inc.New York, 729 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] Shimizu N: "Lung Cancer Differentiation Edited by S.E.Bernal and P.J.Hesketh" Marcel Dkker,Inc., 158 (1992)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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