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Elucidation of the molecular mechanisms of STAT3-alternative splicing and the physiological functions of STAT3-splicing isoforms

Research Project

Project/Area Number 26870308
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Biological pharmacy
Pathological medical chemistry
Research InstitutionKyoto University

Principal Investigator

Masaki So  京都大学, 医学(系)研究科(研究院), 研究員 (70711977)

Co-Investigator(Renkei-kenkyūsha) KATAOKA Naoyuki  京都大学, 大学院医学研究科, 特定准教授 (60346062)
Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsスプライシング / シグナル伝達 / スクリーニング / 化合物ライブラリー
Outline of Final Research Achievements

STAT3 has been recognized as a modulator related various biological responses. STAT3 is known to undergo alternative splicing, and their “alpha” and “beta” splicing isoforms likely have different roles. However, the mechanism of STAT3-alternative splicing remains unclear.
In this study, to unveil the molecular mechanisms of alternative splicing of STAT3 and identification of the chemical compounds that control the balance of splicing isoforms, we established the methodology of elucidation of splicing mechanisms based on the screening to identify small chemical compounds that switch STAT3-alternative splicing patterns. As results, we obtained drug candidates of β-type-inducing factors and a stir, directly or indirectly, to “splicing black box”.
Regarding the difference of physiological functions between STAT3α and β in cells, we found out that STAT3β is regulated in a different manner from STAT3α.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (3 results)

All 2016 2015

All Presentation (3 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Presentation] A splicing reporter-based method for screening of RNA splicing switch identifies the novel therapeutic targets for tumor-worsening proteins2016

    • Author(s)
      正木聡
    • Organizer
      Tenth AACR-JCA Joint Conference
    • Place of Presentation
      Maui
    • Year and Date
      2016-02-16
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ケミカルバイオロジーによる機能性分子のスプライシング制御機構の解明2015

    • Author(s)
      正木聡
    • Organizer
      BMB2015 第38回日本分子生物学会年会、第88回日本生化学大会 合同大会
    • Place of Presentation
      神戸
    • Year and Date
      2015-12-01
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] Chemical biology unveils the RNA splicing mechanism of functional proteins2015

    • Author(s)
      正木聡
    • Organizer
      The 2nd IFOM-Kyoto University Joint Symposium
    • Place of Presentation
      Kyoto
    • Year and Date
      2015-10-06
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research

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Published: 2014-04-04   Modified: 2017-05-10  

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