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Decline in the histone level and organismal aging

Research Project

Project/Area Number 19K16513
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 48040:Medical biochemistry-related
Research InstitutionThe University of Tokyo

Principal Investigator

Ohta Sho  東京大学, 医科学研究所, 助教 (70837541)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsヒストン / ES細胞 / CRISPRi / 細胞老化
Outline of Research at the Start

最近になって老化細胞が加齢に伴う生体機能の低下や加齢関連疾患に深く関わっていることが明らかとなってきている。しかしながら、加齢に伴って観察される老化細胞の増加がどのような分子メカニズムによって起こるのかは不明なままである。本研究では、加齢に伴って生じるヒストン・レベルの変化を実験的に再現することで、ヒストン・レベルの減衰が細胞老化ならびにマウス個体の老化に果たす役割を明らかにする。

Outline of Final Research Achievements

The number of senescent cells in tissues increases as an organism ages, and cellular senescence is associated with the functional decline during aging. However, the molecular mechanisms behind the increased senescent cells are largely unknown. In the current study, I have generated a genetically engineered mouse ES cell line in which the protein level of histones are downregulated in a drug inducible manner. In addition, I have generated mice using the ES cell line. Analyses of the mice are yet to be done, but they can be an experimental tool to investigate profound roles of the histone/nucleosome decline seen in the aging process.

Academic Significance and Societal Importance of the Research Achievements

遺伝子をコードするゲノムDNAはヒストン分子と複合体を形成し、細胞内に収納されている.ヒストン分子は、どの遺伝子を使うか、使わないか、という遺伝子発現制御における分子的基盤である.そのようなヒストン分子の低下を実験的に誘導できるシステムは、老化のみならず多様な生命現象におけるヒストンの生理的機能を明らかにすることのできるこれまでにない実験系と言える.

Report

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

    (2 results)

All 2020

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

  • [Journal Article] RNA-binding protein Ptbp1 regulates alternative splicing and transcriptome in spermatogonia and maintains spermatogenesis in concert with Nanos32020

    • Author(s)
      SENOO Manami、HOZOJI Hiroshi、ISHIKAWA-YAMAUCHI Yu、TAKIJIRI Takashi、OHTA Sho、UKAI Tomoyo、KABATA Mio、YAMAMOTO Takuya、YAMADA Yasuhiro、IKAWA Masahito、OZAWA Manabu
    • Journal Title

      Journal of Reproduction and Development

      Volume: 66 Issue: 5 Pages: 459-467

    • DOI

      10.1262/jrd.2020-060

    • NAID

      130007925613

    • ISSN
      0916-8818, 1348-4400
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification of distinct loci for de novo DNA methylation by DNMT3A and DNMT3B during mammalian development2020

    • Author(s)
      Yagi Masaki、Kabata Mio、Tanaka Akito、Ukai Tomoyo、Ohta Sho、Nakabayashi Kazuhiko、Shimizu Masahito、Hata Kenichiro、Meissner Alexander、Yamamoto Takuya、Yamada Yasuhiro
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 3199-3199

    • DOI

      10.1038/s41467-020-16989-w

    • NAID

      120006865709

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research

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

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