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Molecular Mechanisms of Anti-Tumor Effect of Peptide Analogs and Their Direct Effect on the Ovary

Research Project

Project/Area Number 15591731
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Obstetrics and gynecology
Research InstitutionThe University of Tokyo

Principal Investigator

YANO Tetsu  The University of Tokyo, Faculty of Medicine, Assistant Professor, 医学部附属病院, 助教授 (90251264)

Co-Investigator(Kenkyū-buntansha) NAKAGAWA Shunsuke  The University of Tokyo, Faculty of Medicine, Assistant, 医学部附属病院, 助手 (70270874)
Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2005: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2004: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2003: ¥1,500,000 (Direct Cost: ¥1,500,000)
KeywordsGnRH analog / GnRH antagonist / GnRH II / ovary / endometrial cancer / endometriosis / apoptosis / cell cycle / 顆粒膜細胞 / フローサイトメトリー / HEC-1
Research Abstract

1) GnRH I antagonist, Cetrorelix, directly inhibits the proliferation of HEC-1A human endometrial cancer cell line through mechanisms mediated by GnRH I receptor and involving multiple events in cell-cycle progression, including G2 phase cell cycle arrest coupled with the activation of p53 and the inactivation of cdc2, presumably attributable to an up-regulation of Weel.
2) In light of the anti-proliferative and anti-inflammatory effects of GnRH II on endometriotic stromal cells (ESC), the lower expression of GnRH II in eutopic and ectopic endometrium of women with endometriosis suggests that endogenous GnRH II-mediated cytostatic regulation may be impaired in the development of endometriosis.
3) Cetrorelix directly inhibits the proliferation of rat mature granulosa cells through mechanisms involving multiple events in cell cycle progression, including G2 phase cell cycle arrest coupled with down-regulation of cyclin B1-cdc2 complex levels, presumably attributable to an up-regulation of p53 levels and apoptosis.
4) Fas/Fas ligand system is involved in inducing apoptosis through activation of a caspase-mediated cascade in rat granulosa cells, which is coupled with a decrease in iNOS expression. NO inhibits Fas/Fas ligand system-induced apoptosis by suppressing activation of the caspases, pointing to a cross-talk between Fas/Fas ligand system-induced apoptosis pathway and NO-mediated anti-apoptotic pathway in ovarian follicle atresia.

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (7 results)

All 2005

All Journal Article (7 results)

  • [Journal Article] Repressive domain of unliganded human estrogen receptor alpha associates with Hsc702005

    • Author(s)
      Ogawa S
    • Journal Title

      Genes Cells 10

      Pages: 1095-1102

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] GnRH II as a possible cytostatic regulator in the development of endometriosis2005

    • Author(s)
      Morimoto C
    • Journal Title

      Hum Reprod 20

      Pages: 3212-3218

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] DNA mismatch repair gene hMSH2 is a potent coactivator of oestrogen receptor alpha2005

    • Author(s)
      Wada-Hiraike O
    • Journal Title

      Br J Cancer 92

      Pages: 2286-2291

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Development of an experimental model of endometriosis using mice that ubiquitously express green fluorescent protein2005

    • Author(s)
      Hirata T
    • Journal Title

      Hum Reprod 20

      Pages: 2092-2096

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Cross-Talk between Fas/Fas ligand system and nitric oxide in the pathway subserving granulosa cell apoptosis : a possible regulatory mechanism for ovarian follicle atresia2005

    • Author(s)
      Chen Q
    • Journal Title

      Endocrinology 146

      Pages: 808-815

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] GnRH II as a possible cytostatic regulator in the development of endometriosis.2005

    • Author(s)
      Morimoto C
    • Journal Title

      Hum Reprod 20

      Pages: 3212-3218

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Development of an experimental model of endometriosis using mice that ubiquitously express gteen fluorescent protein2005

    • Author(s)
      Hirata T
    • Journal Title

      Hum Reprod 20

      Pages: 2092-2096

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary

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Published: 2003-04-01   Modified: 2016-04-21  

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