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Differentiation and maintenance mechanisms of thymic epithelial cells that induce autoimmune tolerance

Research Project

Project/Area Number 20K07332
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48040:Medical biochemistry-related
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Akiyama Nobuko  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, 上級研究員 (60342739)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords胸腺上皮細胞 / 免疫寛容 / 自己免疫寛容
Outline of Research at the Start

胸腺の髄質に局在する上皮細胞(髄質上皮細胞;mTEC)は自己免疫疾患の発症抑制に必須である。しかし、その分化・維持機構については十分に解明されていない。申請者らはこれまでに、mTEC の分化に必須な TNF レセプターファミリー RANK の発現を指標に、胎仔期において mTEC に特化して分化する前駆細胞を同定した(J Exp Med. 2016)。一方、成体における mTEC の維持機構については、実体は明らかでない。本研究課題は、成体における mTEC 前駆細胞を同定し、その細胞の特性を解析することにより、mTEC の分化・維持機構の解明を目指す。

Outline of Final Research Achievements

Understanding the pathogenesis of autoimmune diseases is important for their treatment and prevention. Epithelial cells localized in the medulla of the thymus (medullary epithelial cells; mTECs) are essential for the suppression of autoimmune diseases. The applicants have previously identified progenitor cells that specifically differentiate into mTECs during fetal life based on the expression of the TNF receptor family RANK, which is essential for mTEC differentiation (J Exp Med. 2016, 213:1441). On the other hand, the nature of the differentiation and maintenance mechanisms of mTECs in adults is not clear. The aim of this research project is to identify adult mTEC progenitors and to analyze their cellular characteristics in order to elucidate the differentiation and maintenance mechanisms of mTECs.

Academic Significance and Societal Importance of the Research Achievements

成体マウスの Aire 陽性髄質上皮細胞は約 2 週間の寿命でターンオーバーするが、その維持に関わる分化機構については、一致した結論が得られていない。本課題は細胞分化マーカーに加えて分子機構の知見を基軸に研究を進めることで、関連分野におけるブレークスルーになると期待される。
また髄質上皮細胞は、制御性 T 細胞の分化を誘導する。さらに、がん免疫にも関与することも報告されている。本課題で、その前駆・幹細胞が明らかになった場合、それを利用することで特定の抗原に対する制御性 T 細胞を創出する技術の開発など、新たな研究の発展が期待される。

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

    (14 results)

All 2024 2023 2022 2021 2020 Other

All Journal Article (9 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 9 results,  Open Access: 6 results) Presentation (2 results) Remarks (3 results)

  • [Journal Article] Mitochondrial protein C15ORF48 is a stress-independent inducer of autophagy that regulates oxidative stress and autoimmunity2024

    • Author(s)
      Takakura Y、Machida M、Terada N、Katsumi Y、Kawamura S、Horie K、Miyauchi M、Ishikawa T、Akiyama N、Seki T、Miyao 、Hayama Mio、Endo R、Ishii H、Maruyama Y、Hagiwara N、Kobayashi T J.、Yamaguchi N、Takano H、Akiyama T、Yamaguchi N
    • Journal Title

      Nature Communications

      Volume: 15 Issue: 1 Pages: 953-953

    • DOI

      10.1038/s41467-024-45206-1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Acute irradiation causes a long-term disturbance in the heterogeneity and gene expression profile of medullary thymic epithelial cells2023

    • Author(s)
      Horie Kenta、Namiki Kano、Kinoshita Kyouhei、Miyauchi Maki、Ishikawa Tatsuya、Hayama Mio、Maruyama Yuya、Hagiwara Naho、Miyao Takahisa、Murata Shigeo、Kobayashi Tetsuya J.、Akiyama Nobuko、Akiyama Taishin
    • Journal Title

      Frontiers in Immunology

      Volume: 14 Pages: 1186154-1186154

    • DOI

      10.3389/fimmu.2023.1186154

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] <scp>T‐cell receptor</scp> repertoire analysis of <scp>CD4</scp>‐positive T cells from blood and an affected organ in an autoimmune mouse model2023

    • Author(s)
      Ishikawa Tatsuya、Horie Kenta、Takakura Yuki、Ohki Houko、Maruyama Yuya、Hayama Mio、Miyauchi Maki、Miyao Takahisa、Hagiwara Naho、Kobayashi Tetsuya J.、Akiyama Nobuko、Akiyama Taishin
    • Journal Title

      Genes to Cells

      Volume: 28 Issue: 12 Pages: 929-941

    • DOI

      10.1111/gtc.13079

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sample Preparation and Integrative Data Analysis of a Droplet-based Single-Cell ATAC-sequencing Using Murine Thymic Epithelial Cells2023

    • Author(s)
      Ishikawa Tatsuya、Ishii Hiroto、Miyao Takahisa、Horie Kenta、Miyauchi Maki、Akiyama Nobuko、Akiyama Taishin
    • Journal Title

      BIO-PROTOCOL

      Volume: 13 Issue: 0 Pages: 4588-4588

    • DOI

      10.21769/bioprotoc.4588

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Integrative analysis of scRNA-seq and scATAC-seq revealed transit-amplifying thymic epithelial cells expressing autoimmune regulator2022

    • Author(s)
      Miyao T、Miyauchi M、Kelly S T、T Tommy W、Ishikawa T、Oh E、Hirai S、Horie K、Takakura Y、Ohki H、Hayama M、Maruyama Y、Seki T、Ishii H、Yabukami H、Yoshida M、Inoue A、Sakaue-Sawano A、Miyawaki A、Muratani M、Minoda A、Akiyama N、Akiyama T
    • Journal Title

      eLife

      Volume: 11 Pages: 73998-73998

    • DOI

      10.7554/elife.73998

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Aire controls heterogeneity of medullary thymic epithelial cells for the expression of self-antigens2022

    • Author(s)
      Nishijima H, Matsumoto M, Morimoto J, Hosomichi K, Akiyama N, Akiyama T, Oya T, Tsuneyama K, Yoshida H, Matsumoto M.
    • Journal Title

      The Journal of Immunology

      Volume: 15 Issue: 2 Pages: 303-320

    • DOI

      10.4049/jimmunol.2100692

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] ntegrative analysis of scRNAs-seq and scATAC-seq revealed transit-amplifying thymic epithelial cells expressing autoimmune regulator2022

    • Author(s)
      T Miyao, M Miyauchi, S. T Kelly, T W. Terooatea, T Ishikawa, E Oh, S Hirai, K Horie, Y Takakura, H Ohki, M Hayama, Y Maruyama, T Seki, H Yabukami, M Yoshida, A Inoue, A Sakaue- Sawano, A Miyawaki, M Muratani, A Minoda, N Akiyama, T Akiyama
    • Journal Title

      eLife

      Volume: in press Pages: 1-16

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] In Pursuit of Adult Progenitors of Thymic Epithelial Cells2021

    • Author(s)
      Ishikawa T, Akiyama N, Akiyama T
    • Journal Title

      Front Immunol

      Volume: 12 Pages: 621824-621824

    • DOI

      10.3389/fimmu.2021.621824

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The CCR4-NOT deadenylase complex safeguards thymic positive selection by down-regulating aberrant pro-apoptotic gene expression2020

    • Author(s)
      Ito-Kureha Taku、Miyao Takahisa、Nishijima Saori、Suzuki Toru、Koizumi Shin-ichi、Villar-Briones Alejandro、Takahashi Akinori、Akiyama Nobuko、Morita Masahiro、Naguro Isao、Ishikawa Hiroki、Ichijo Hidenori、Akiyama Taishin、Yamamoto Tadashi
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 6169-6169

    • DOI

      10.1038/s41467-020-19975-4

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] B 型胸腺腫における転写制御因子 AIRE と ASCL1 の発現低下は関連自己免疫疾患発症へ寄与する2024

    • Author(s)
      秋山伸子
    • Organizer
      第43回胸腺研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 胸腺腫の1細胞遺伝子発現解析2022

    • Author(s)
      秋山伸子
    • Organizer
      第41回日本胸腺研究会
    • Related Report
      2021 Research-status Report
  • [Remarks] 免疫はなぜ自己組織を攻撃しないのかー自己免疫疾患を防ぐ胸腺オートファジーの誘導機構を解明-

    • URL

      https://www.riken.jp/press/2024/20240208_3/index.html

    • Related Report
      2023 Annual Research Report
  • [Remarks] シン・胸腺上皮細胞ーシングルセル解析による胸腺上皮細胞の分化機構解明ー

    • URL

      https://www.riken.jp/press/2022/20220517_2/index.html

    • Related Report
      2022 Research-status Report
  • [Remarks] 理研HP Tリンパ球の救命装置 -mRNA分解により異常な細胞死を防ぐ-

    • URL

      https://www.riken.jp/press/2020/20201202_3/index.html

    • Related Report
      2020 Research-status Report

URL: 

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

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