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Investigation of lymphocyte differentiation defect caused by aberrant transcription programs in pathogenic IKZF variants.

Research Project

Project/Area Number 20K16884
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionInstitute of Physical and Chemical Research (2022-2023)
Tokyo Medical and Dental University (2020-2021)

Principal Investigator

Yamashita Motoi  国立研究開発法人理化学研究所, 生命医科学研究センター, 基礎科学特別研究員 (70869122)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords先天性免疫異常症 / AIOLOS / IKZF3 / IKZF / AIOLOS異常症 / IKZF転写因子ファミリー / 原発性免疫不全症 / リンパ球分化 / 転写因子 / ヘテロダイマー / IKZFファミリー / IKAROS / HELIOS
Outline of Research at the Start

本研究では、IKZFファミリーの転写因子に対して、ヘテロダイマーの形成を介して他のIKZFファミリーの転写院試活性を阻害しリンパ球分化を障害する変異を同定し、細胞株を用いた変異タンパクの機能解析とノックインマウスを用いた変異の生理的意義の解明を行う。さらには変異タンパクの二量体化を障害する遺伝子編集を行うことにより、これらの疾患に対する治療法の基盤開発を行う。

Outline of Final Research Achievements

In this study, we investigated two missense variants of AIOLOS (IKZF3), identified in the patients with inborn errors of immunity (IEI). We conducted in vitro functional assays, immunophenotyping and transcriptome analysis of knock-in mice harboring disease-causing variants, as well as lymphocyte subset analyses of the patient and transcriptome analyses of patient lymphocytes. Through these approaches, we elucidated the molecular pathogenesis by which these missense variants lead to lymphocyte differentiation defects observed in AIOLOS-associated IEI.

Academic Significance and Societal Importance of the Research Achievements

本研究の学術的・社会的意義としては、AIOLOS異常症において機能喪失型のAIOLOSバリアントが、AIOLOS自身の機能障害だけでなく他のIKZF分子(IKAROS)の機能障害を引き起こし、分子病態の一端を担うことを証明しAIOLOS異常症の疾患概念の確立に寄与したことである。また、AIOLOS異常症以外の転写因子異常を原因とする先天性免疫異常症や単一遺伝子疾患においても同様の分子病態が存在しうる可能性を示唆した点も本研究の意義の一つと考えられる。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (9 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (2 results) (of which Invited: 2 results)

  • [Int'l Joint Research] Sakarya University/University of Health Sciences(トルコ)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] A Rare AIOLOS N160S Variant Causing IEI in Human2024

    • Author(s)
      Ozdemir Oner、Dikici Ummugulsum、Yarar Murat Hakki、Yamashita Motoi、Morio Tomohiro
    • Journal Title

      Journal of Clinical Immunology

      Volume: 44 Issue: 2 Pages: 57-57

    • DOI

      10.1007/s10875-024-01657-1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Impaired tissue homing by the Ikzf3N159S variant is mediated by interfering with Ikaros function2023

    • Author(s)
      Chang Jingjie、Yamashita Motoi、Padhi Aditya K.、Zhang Kam Y. J.、Taniuchi Ichiro
    • Journal Title

      Frontiers in Immunology

      Volume: 14 Pages: 1239779-1239779

    • DOI

      10.3389/fimmu.2023.1239779

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] AIOLOS Variants Causing Immunodeficiency in Human and Mice2022

    • Author(s)
      Yamashita Motoi、Morio Tomohiro
    • Journal Title

      Frontiers in Immunology

      Volume: 13 Pages: 866582-866582

    • DOI

      10.3389/fimmu.2022.866582

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A variant in human AIOLOS impairs adaptive immunity by interfering with IKAROS2021

    • Author(s)
      Yamashita Motoi、Kuehn Hye Sun、Okuyama Kazuki、Okada Satoshi、Inoue Yuzaburo、Takagi Masatoshi、Kanegane Hirokazu、Takeuchi Masahiro、Shimojo Naoki、Tsumura Miyuki、Padhi Aditya K.、Zhang Kam Y. J.、Boisson Bertrand、Casanova Jean-Laurent、Ohara Osamu、Rosenzweig Sergio D.、Taniuchi Ichiro、Morio Tomohiro
    • Journal Title

      Nature Immunology

      Volume: 22 Issue: 7 Pages: 893-903

    • DOI

      10.1038/s41590-021-00951-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] T and B cell abnormalities, pneumocystis pneumonia, and chronic lymphocytic leukemia associated with an AIOLOS defect in patients2021

    • Author(s)
      Kuehn Hye Sun、Chang Jingjie、Yamashita Motoi、Niemela Julie E.、Zou Chengcheng、Okuyama Kazuki、Harada Junji、Stoddard Jennifer L.、Nunes-Santos Cristiane J.、Boast Brigette、Baxter Ryan M.、Hsieh Elena W.Y.、Garofalo Mary、Fleisher Thomas A.、Morio Tomohiro、Taniuchi Ichiro、Dutmer Cullen M.、Rosenzweig Sergio D.
    • Journal Title

      Journal of Experimental Medicine

      Volume: 218 Issue: 12

    • DOI

      10.1084/jem.20211118

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Inborn errors of IKAROS and AIOLOS.2021

    • Author(s)
      Yamashita M and Morio T.
    • Journal Title

      Curr Opin Immunol .

      Volume: 72 Pages: 239-248

    • DOI

      10.1016/j.coi.2021.06.010

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] ALL predisposition or inborn errors of immunity?: Germline variants of IKAROS and AIOLOS.2023

    • Author(s)
      Motoi Yamashita
    • Organizer
      第65回日本小児血液・がん学会学術集会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] リンパ球転写因子の異常による先天性免疫異常症 患者モデルマウスから迫る病態解明2023

    • Author(s)
      山下基
    • Organizer
      第51回日本臨床免疫学会総会
    • Related Report
      2023 Annual Research Report
    • Invited

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Published: 2020-04-28   Modified: 2025-01-30  

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