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Study of mRNA translation in immune system

Research Project

Project/Area Number 19H03488
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 49070:Immunology-related
Research InstitutionKyoto University

Principal Investigator

Mino Takahsi  京都大学, 医学研究科, 助教 (60646149)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2020: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywords免疫 / サイトカイン / 転写後制御 / 翻訳 / mRNA分解 / Regnase-1 / UPF1 / 自然免疫 / リボソーム / mRNA
Outline of Research at the Start

本研究は,これまでの転写制御(mRNA産生の制御)と比較して未知の領域である,免疫システムにおけるmRNAの転写後制御機構(mRNAの局在,分解,翻訳)を解明することを目的としている。特に,近年,申請者らが免疫応答におけるmRNA制御に関わることを見出したRNA分解酵素Regnase-1,RNAヘリカーゼUPF1および蛋白質合成装置ribosomeに着目し,それらの制御因子を通じて免疫システムにおける新たなmRNAの翻訳制御機構の解明を試みる。

Outline of Final Research Achievements

Post-transcriptional regulation that modifies mRNA stability and translation provides rapid and flexible control of gene expression in immune system. Regnase-1-mediated mRNA decay (RMD), in which inflammatory mRNAs harboring specific stem-loop structures are degraded, is a critical part of proper immune homeostasis. However, the mechanisms of the RMD remain to be clarified. This study is aiming to investigate molecular mechanism of mRNA regulation and translation mediated by RMD. We found that Regnase-1 targets pioneer rounds of translation and is critical for rapid resolution of inflammation through restriction of the number of proteins translated by a given mRNA. Our findings reveal that RMD is essential for efficiently degrading inflammatory mRNAs undergoing pioneer rounds of translation.

Academic Significance and Societal Importance of the Research Achievements

炎症は,病原体の排除に重要な免疫反応であるが,過剰な炎症は敗血症性ショックや自己免疫疾患,動脈硬化,代謝性疾患など様々な病気の原因である。この炎症応答の厳密な制御にRNA制御が重要であることが近年明らかとなってきたが,その分子メカニズムは不明であった。本研究は,Regnase-1によるパイオニアラウンド翻訳が生じているmRNA分解が免疫制御に重要であることを解明した。本研究の成果は,過剰もしくは慢性的な炎症で生じる炎症性疾患の病態解明や,ワクチンの効果を高める添加剤(ワクチンアジュバント)の開発など,新たな治療法の開発につながることが期待される。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (13 results)

All 2021 2020 2019 Other

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

  • [Journal Article] Extracellular mRNA transported to the nucleus exerts translation-independent function2021

    • Author(s)
      Tomita Takeshi、Kato Masayoshi、Mishima Taishi、Matsunaga Yuta、Sanjo Hideki、Ito Ken-ichi、Minagawa Kentaro、Matsui Toshimitsu、Oikawa Hiroyuki、Takahashi Satoshi、Takao Toshifumi、Iwai Noriki、Mino Takashi、Takeuchi Osamu、Maru Yoshiro、Hiratsuka Sachie
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 3655-3655

    • DOI

      10.1038/s41467-021-23969-1

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Regnase‐1-related endoribonucleases in health and immunological diseases2021

    • Author(s)
      Mino Takashi、Takeuchi Osamu
    • Journal Title

      Immunological Reviews

      Volume: 304 Issue: 1 Pages: 97-110

    • DOI

      10.1111/imr.13023

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] IRAK1-dependent Regnase-1-14-3-3 complex formation controls Regnase-1-mediated mRNA decay2021

    • Author(s)
      Akaki Kotaro、Ogata Kosuke、Yamauchi Yuhei、Iwai Noriki、Tse Ka Man、Hia Fabian、Mochizuki Atsushi、Ishihama Yasushi、Mino Takashi、Takeuchi Osamu
    • Journal Title

      eLife

      Volume: 10

    • DOI

      10.7554/elife.71966

    • NAID

      120007166024

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Profibrotic function of pulmonary group 2 innate lymphoid cells is controlled by regnase-12020

    • Author(s)
      Nakatsuka Yoshinari、Yaku Ai、Handa Tomohiro、Vandenbon Alexis、Hikichi Yuki、Motomura Yasutaka、Sato Ayuko、Yoshinaga Masanori、Tanizawa Kiminobu、Watanabe Kizuku、Hirai Toyohiro、Chin Kazuo、Suzuki Yutaka、Uehata Takuya、Mino Takashi、Tsujimura Tohru、Moro Kazuyo、Takeuchi Osamu
    • Journal Title

      European Respiratory Journal

      Volume: 57 Issue: 3 Pages: 2000018-2000018

    • DOI

      10.1183/13993003.00018-2020

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] N4BP1 restricts HIV-1 and its inactivation by MALT1 promotes viral reactivation.2019

    • Author(s)
      Yamasoba D, Sato K, Ichinose T, Imamura T, Koepke L, Joas S, Reith E, Hotter D, Misawa N, Akaki K, Uehata T, Mino T, Miyamoto S, Noda T, Yamashita A, Standley DM, Kirchhoff F, Sauter D, Koyanagi Y, Takeuchi O.
    • Journal Title

      Nat Microbiol

      Volume: 4 Issue: 9 Pages: 1532-1544

    • DOI

      10.1038/s41564-019-0460-3

    • NAID

      120006731123

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Translation-dependent unwinding of stem?loops by UPF1 licenses Regnase-1 to degrade inflammatory mRNAs2019

    • Author(s)
      Mino Takashi、Iwai Noriki、Endo Masayuki、Inoue Kentaro、Akaki Kotaro、Hia Fabian、Uehata Takuya、Emura Tomoko、Hidaka Kumi、Suzuki Yutaka、Standley Daron M、Okada-Hatakeyama Mariko、Ohno Shigeo、Sugiyama Hiroshi、Yamashita Akio、Takeuchi Osamu
    • Journal Title

      Nucleic Acids Research

      Volume: 47 Pages: 8838-8859

    • DOI

      10.1093/nar/gkz628

    • NAID

      120006708220

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] RNA structure profiling reveals differential accessibility to regulatory RBPs in responses to immune stimulation2021

    • Author(s)
      三野享史
    • Organizer
      第8 回CCR4-NOT研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 炎症におけるRNA制御の分子基盤2021

    • Author(s)
      三野享史
    • Organizer
      第50回日本免疫学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Unwinding of stem-loops by UPF1 licenses Regnase-1 to degrade inflammatory mRNAs2019

    • Author(s)
      Mino Takashi、Takeuchi Osamu
    • Organizer
      第48回日本免疫学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Regnase-1による炎症性mRNA分解機構2019

    • Author(s)
      三野享史
    • Organizer
      第7回CCR4-NOT研究会
    • Related Report
      2019 Annual Research Report
  • [Remarks] 京都大学大学院医学研究科医化学分野竹内研究室HP

    • URL

      https://mc.mfour.med.kyoto-u.ac.jp/index.html

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report 2019 Annual Research Report
  • [Remarks] 炎症が制御される新たなメカニズムの解明

    • URL

      https://www.kyoto-u.ac.jp/ja/research-news/2021-10-19-2

    • Related Report
      2021 Annual Research Report
  • [Remarks] 炎症が制御される新たなRNA分解メカニズムを解明 -新たな免疫賦活化法の開発に道筋-

    • URL

      http://www.kyoto-u.ac.jp/ja/research/research_results/2019/190722_2.html

    • Related Report
      2019 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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