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Elucidation of agonistic changes of the antagonists of androgen receptor of prostate cancer

Research Project

Project/Area Number 24592380
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Urology
Research InstitutionNiigata University

Principal Investigator

NISHIYAMA Tsutomu  新潟大学, 医歯学系, 准教授 (70208239)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Keywords前立腺癌 / アンドロゲン抑制療法 / アンドロゲン / アンドロゲン受容体 / アンタゴニスト / アゴニスト / 共役因子 / NKX3.1 / アンドロゲンん / 活性化共役因子
Outline of Final Research Achievements

Androgen and androgen receptor (AR) is the main axis of prostate cancer growth. AR antagonists in androgen deprivation therapy for prostate cancer often show agonistic action and lead to prostate cancer growth; however, the mechanisms of agonistic changes are unknown. We elucidated the agonistic change of the antagonists of androgen receptor of the prostate cancer using changes of the cofactors. We detected the enhanced expression of NKX3-1 during the agonistic change of antagonist of flutamide for prostate cancer cells using real-time PCR and Western Blot analyses. We did not detect the change of the expression of NKX3-1 and agonistic action while adding the antagonist, bicalutamide, to prostate cancer cells.
The agonistic change of the antagonists of androgen receptor of the prostate cancer in the results of this research can develop into the new treatment strategy that targets the mechanism.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (9 results)

All 2015 2014 2013 2012 2011 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (2 results) Book (1 results)

  • [Journal Article] Androgen metabolic pathway involved in current and emerging treatment for men with castration resistant prostate cancer: intraprostatic androgens as therapeutic targets and endocrinological biomarkers.2014

    • Author(s)
      Hara N, Nishiyama T.
    • Journal Title

      Curr Drug Targets.

      Volume: 15 Pages: 1215-1224

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Serum testosterone levels after medical or surgical androgen deprivation: A comprehensive review of the literature.2014

    • Author(s)
      Nishiyama T,
    • Journal Title

      Urol Oncol.

      Volume: 32 Issue: 1 Pages: 38.e17-38.e28

    • DOI

      10.1016/j.urolonc.2013.03.007

    • Related Report
      2014 Annual Research Report 2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Androgen deprivation promotes intratumoral synthesis of dihydrotestosterone from androgen metabolites in prostate cancer.2013

    • Author(s)
      Ishizaki F, Nishiyama T, Kawasaki T, Miyashiro Y, Hara N, Takizawa I, Naito M, Takahashi K.
    • Journal Title

      Sci Rep.

      Volume: 3 Issue: 1 Pages: 1528-1528

    • DOI

      10.1038/srep01528

    • Related Report
      2013 Research-status Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Androgen deprivation therapy in combination with radiotherapy for high-risk clinically localized prostate cancer.2012

    • Author(s)
      Nishiyama T.
    • Journal Title

      J Steroid Biochem Mol Biol.

      Volume: 129 Issue: 3-5 Pages: 179-190

    • DOI

      10.1016/j.jsbmb.2011.12.019

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Deficiency in androgens and upregulation of insulin-like growth factor-1 are involved in high bone turnover in men receiving androgen deprivation therapy for prostate cancer.2012

    • Author(s)
      Ishizaki F, Hara N, Takizawa I, Nishiyama T, Isahaya E, Kawasaki T, Takahashi K.
    • Journal Title

      Growth Horm IGF Res.

      Volume: 22 Issue: 3-4 Pages: 122-128

    • DOI

      10.1016/j.ghir.2012.04.003

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Altered association of interleukin-6 with sex steroids in lipid metabolism disorder in men with prostate cancer receiving androgen deprivation therapy.2011

    • Author(s)
      Komatsu S, Hara N, Ishizaki F, Nishiyama T, Takizawa I, Isahaya E, Kawasaki T, Takahashi K.
    • Journal Title

      Prostate

      Volume: (In press) Issue: 11 Pages: 1207-1213

    • DOI

      10.1002/pros.22471

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] 前立腺癌アンドロゲンレセプターに対する抗アンドロゲン剤のアゴニスト化のメカニズム:共調節因子の発現および機能の変化2015

    • Author(s)
      武田啓介、西山勉
    • Organizer
      第103回日本泌尿器科学会総会
    • Place of Presentation
      金沢、ホテル日航金沢
    • Year and Date
      2015-04-19
    • Related Report
      2014 Annual Research Report
  • [Presentation] NKX3-1 and RAB3B as possible major coactivators inducing agonistic effects in androgen receptor-androgen receptor antagonist interaction

    • Author(s)
      Nishiyama T, Takeda K, Hara H, Ishizaki F, Takahashi K
    • Organizer
      SIU annual meeting
    • Place of Presentation
      Vancouver, Canada
    • Related Report
      2013 Research-status Report
  • [Book] Androgens: Production, Functions and Disorders. Chapter 1: Androgen deprivation therapy for advanced prostate cancer on the ground of androgen milieu in the prostate2012

    • Author(s)
      Nishiyama T
    • Publisher
      NOVA SCIENCE PUBLISHERS, INC.
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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