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抗原受容体シグナルを核内細胞運命決定に変換する機構の解明

Publicly Offered Research

Project AreaImmunological Self Recognition and its Disorders
Project/Area Number 22021045
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionThe Institute of Physical and Chemical Research

Principal Investigator

谷内 一郎  独立行政法人理化学研究所, 免疫転写制御研究グループ, グループディレクター (20284573)

Project Period (FY) 2010 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥9,900,000 (Direct Cost: ¥9,900,000)
Fiscal Year 2011: ¥4,900,000 (Direct Cost: ¥4,900,000)
Fiscal Year 2010: ¥5,000,000 (Direct Cost: ¥5,000,000)
KeywordsTCRシグナル / 細胞運命決定 / 自己・非自己認識 / 核内プログラミング / 転写因子
Research Abstract

胸腺細胞の正と負の選択機構では、MHC分子によって提示される自己抗原をTCRが認識することで生じるTCRシグナルの差異により細胞の生と死の運命が決定され、自己応答性クローンの除去機構として免疫系における自己と非自己認識のモデルとして古くから研究されている。しかしながら、核内でTCRシグナルを感知し、細胞運命決定機構に変換する分子機構は未だ不明である。本研究課題は胸腺細胞のヘルパー/キラーへの系列決定が同様にTCRシグナルにより制御されることに着目し、この系列決定において中心的な役割を果たすThPOK遺伝子発現制御機構、特にThPOKサイレンサーを介した制御機構を解明することで、TCRシグナル下流で細胞運命決定を制御する分子機構の解明を目的とするものである。最終年度にあたる本年度は、生化学的手法によりこれまでに同定したThPOKサイレンサー結合核タンパク質の機能解析を行い、BCl11b転写因子がThPOKサイレンサーの機能発現に必須であることを見出した。しかしながらBcl11bのThPOKサイレンサーへの結合はThPOKサイレンサーの機能制御の機構としては機能していないと考えられた。そこで翻訳後修飾に着目し解析を進めた所、Bcl11bは胸腺特異的にある翻訳後修飾を受けることが判明したので、その機能的な意味を遺伝学的解析により検討した。これら成果は特定領域の国際シンポジウムで、及び第40回免疫学会総会で発表した。また、国際雑誌「International Immunology」に総説を発表した。

Report

(2 results)
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (19 results)

All 2012 2011 2010 Other

All Journal Article (9 results) (of which Peer Reviewed: 9 results) Presentation (8 results) Remarks (2 results)

  • [Journal Article] Transcriptional control of T cell development2011

    • Author(s)
      Taku Naito
    • Journal Title

      International immunology

      Volume: 23 Pages: 661-668

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cd8 enhancer E8_1 and Runx factors regulate CD8a expression in activated CD8^+ T cells2011

    • Author(s)
      Hammad Hassan
    • Journal Title

      Proc.Natl.Acad.Sci.USA

      Volume: 108 Pages: 18330-18335

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Transcriptional and Epigenetic Regulation of CD4/CD8 Lineage Choice2011

    • Author(s)
      Ichiro Taniuchi
    • Journal Title

      Advances in Immunology

      Volume: 110 Pages: 71-110

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Runx1/Cbfb2 complexes are required for lymphoid tissue inducer cell differentiation at two developmental stages2011

    • Author(s)
      Masashi Tachibana
    • Journal Title

      J.Immunol.

      Volume: 186 Pages: 1450-1457

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Non-redundant roles for Runx1 alternative promoters reflect their activity at discrete stages of developmental hematopoiesis.2010

    • Author(s)
      Thomas Bee
    • Journal Title

      Blood

      Volume: 115 Pages: 3042-3050

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Flexible Use of Nuclear Import Pathways by HIV-1.2010

    • Author(s)
      Kyeong Eun Lee
    • Journal Title

      Cell Host & Microbe

      Volume: 7 Pages: 221-233

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The zinc finger protein MAZR is part of the transcription factor network controlling CD4/CD8 cell fate decision of DP thymocytes2010

    • Author(s)
      Shinya Sakaguchi
    • Journal Title

      Nat.Immunol.

      Volume: 11 Pages: 442-448

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Co-receptor choice by Va14 iNKT cells is driven by Th-POK expression rather than avoidance of CD8-mediated negative selection2010

    • Author(s)
      Issac Engel
    • Journal Title

      J.Exp.Med

      Volume: 207 Pages: 1015-1029

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The network of transcription factors that underlie the CD4 versus CD8 lineage decision2010

    • Author(s)
      Taku Naito
    • Journal Title

      Int.Immunol

      Volume: 22 Pages: 791-796

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] Toward understanding of how TCR signals are integrated into cell fate determination2012

    • Author(s)
      谷内一郎
    • Organizer
      特定領域免疫自己国際シンポジウム
    • Place of Presentation
      京都大学京都(招待講演)
    • Year and Date
      2012-01-27
    • Related Report
      2011 Annual Research Report
  • [Presentation] The role of Bcl11B in lineage commitment of Cd4+CD8+DP thymocytes via regulating of ThPOK silencer activity2011

    • Author(s)
      田中宏和
    • Organizer
      第40回日本免疫学会総会
    • Place of Presentation
      幕張メッセ千葉
    • Year and Date
      2011-11-27
    • Related Report
      2011 Annual Research Report
  • [Presentation] Transcriptional control of thymocytes development2011

    • Author(s)
      Ichiro Taniuchi
    • Organizer
      TCIUD 2011
    • Place of Presentation
      大阪
    • Year and Date
      2011-03-01
    • Related Report
      2010 Annual Research Report
  • [Presentation] Transcriptional Regulation of CD4/CD8 Lineage Choice2010

    • Author(s)
      Ichiro Taniuchi
    • Organizer
      RCAI-LIAI Workshop
    • Place of Presentation
      横浜
    • Year and Date
      2010-11-11
    • Related Report
      2010 Annual Research Report
  • [Presentation] Locus specific and non-specific regulation of silencers function2010

    • Author(s)
      Ichiro Taniuchi
    • Organizer
      Aegean Conferences
    • Place of Presentation
      Crete, Greece
    • Year and Date
      2010-10-11
    • Related Report
      2010 Annual Research Report
  • [Presentation] Regulation of Thymocytes Development by Silencers2010

    • Author(s)
      Ichiro Taniuchi
    • Organizer
      RCAI-INSERM Workshop
    • Place of Presentation
      横浜
    • Year and Date
      2010-08-30
    • Related Report
      2010 Annual Research Report
  • [Presentation] Transcriptional Regulation of CD4/CD8 Lineage Choice2010

    • Author(s)
      Ichiro Taniuchi
    • Organizer
      第14回国際免疫学会議(ISI2010)
    • Place of Presentation
      神戸
    • Year and Date
      2010-08-22
    • Related Report
      2010 Annual Research Report
  • [Presentation] Transcriptional Regulation of CD4/CD8 Lineage Choice2010

    • Author(s)
      Ichiro Taniuchi
    • Organizer
      Chiba GCOE symposium
    • Place of Presentation
      千葉
    • Year and Date
      2010-08-20
    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://www.rcai.riken.jp/group/regu/index.html

    • Related Report
      2011 Annual Research Report
  • [Remarks]

    • URL

      http://www.rcai.riken.jp/group/regu/index.html

    • Related Report
      2010 Annual Research Report

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Published: 2010-08-23   Modified: 2018-03-28  

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