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Understanding the interrelationship between senescent cells and age-related diseases and the elucidation of the mechanisms for the killing of senescent cells by senolytic drugs

Research Project

Project/Area Number 20K16156
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 49010:Pathological biochemistry-related
Research InstitutionOsaka University

Principal Investigator

Wakita Masahiro  大阪大学, 免疫学フロンティア研究センター, 特任助教(常勤) (70794668)

Project Period (FY) 2020-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords細胞老化 / セノリティックドラッグ / 老化細胞 / セノリティック ドラッグ
Outline of Research at the Start

本研究は、慢性炎症を引き起こす原因の1つである老化細胞に焦点を当て、当研究室のハイスループットスクリーニングで同定した老化細胞を効率よく死滅させることができる化合物T-JFCR-6を用いて、がんをはじめとする加齢性疾患に与える影響を明らかにしていく。さらに、T-JFCR-6による老化細胞の細胞死誘導の作用機序を完全に理解することで、老化細胞が死ににくい理由を明らかにする。さらにその知見を元に、より老化細胞のみを標的に死滅させることができる薬剤の開発へとつなげることを目指す。

Outline of Final Research Achievements

Cellular senescence is a stable cell cycle arrest that act as a defense mechanism against tumor development. However, the accumulation of senescent cells in the age process provokes inflammation, leading to the increase of risk of age-related diseases including dementia, arthritis, and cancer. The depletion of senescent cells, termed senotherapy, might be anticipated to alleviates and prevents the progression of age-related diseases. I found that ARV825, which was identified as a specific killing agent for senescent cells, could increase the efficiency of chemotherapy for xenograft tumor development, concomitant with the depletion of senescent cells. As I analyze the mechanism of ARV825-induced cell death, damaged mitochondria were accumulated due to the impaired autophagy flux, leading to the cell death mediated by the increase of ROS production. This mechanism is a common pathway in the cell death process of senescent cells induced by several previously reported senolytic drugs.

Academic Significance and Societal Importance of the Research Achievements

細胞老化は修復困難なDNA障害を受けた細胞が過増殖することを防ぐため、不可逆的に細胞周期が停止する機構であるが、この細胞は実は炎症性物質をはじめとする様々な液性因子を分泌することで加齢性の疾患を悪化させることが明らかになってきた。本研究では老化細胞を除去する効果を有する既報のセノリティックドラッグをがんの化学療法と併用することでがん治療に対する効果を高めることを見出した。さらに、セノリティックドラッグが共通の分子メカニズムを通じて老化細胞を死滅させていることを見出した。今後は本知見を元に、副作用が少なく老化細胞に対する選択性および高い有効性を示す薬剤開発へと発展することが期待される。

Report

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

    (10 results)

All 2022 2021 2020 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (3 results) (of which Invited: 1 results) Book (3 results) Remarks (1 results)

  • [Journal Article] SARS-CoV-2 infection triggers paracrine senescence and leads to a sustained senescence-associated inflammatory response2022

    • Author(s)
      Tsuji Shunya、Minami Shohei、Hashimoto Rina、Konishi Yusuke、Suzuki Tatsuya、Kondo Tamae、Sasai Miwa、Torii Shiho、Ono Chikako、Shichinohe Shintaro、Sato Shintaro、et al.
    • Journal Title

      Nature Aging

      Volume: 2 Issue: 2 Pages: 115-124

    • DOI

      10.1038/s43587-022-00170-7

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Gut bacteria identified in colorectal cancer patients promote tumourigenesis via butyrate secretion2021

    • Author(s)
      Okumura Shintaro、Konishi Yusuke、Narukawa Megumi、Sugiura Yuki、Yoshimoto Shin、Arai Yuriko、Sato Shintaro、Yoshida Yasuo、Tsuji Shunya、Uemura Ken、Wakita Masahiro、Matsudaira Tatsuyuki、Matsumoto Tomonori、Kawamoto Shimpei、Takahashi Akiko、Itatani Yoshiro、Miki Hiroaki ら
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 5674-5674

    • DOI

      10.1038/s41467-021-25965-x

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A BET family protein degrader provokes senolysis by targeting NHEJ and autophagy in senescent cells.2020

    • Author(s)
      Wakita M, Takahashi A, Sano O, Loo TM, Imai Y, Narukawa M, Iwata H, Matsudaira T, Kawamoto S, Ohtani N, Yoshimori T, Hara E.
    • Journal Title

      Nat Commun

      Volume: 1935 Issue: 1 Pages: 1935-1935

    • DOI

      10.1038/s41467-020-15719-6

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Impact of BET-family protein degrader in the killing of senescent cells and its potential for cancer treatment2021

    • Author(s)
      脇田将裕
    • Organizer
      第94回日本生化学大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Clearance of senescent cells by BET-family protein degrader and their potential for cancer therapy2021

    • Author(s)
      脇田将裕
    • Organizer
      第80回日本癌学会総会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 新規老化細胞除去薬によるがん治療への可能性2020

    • Author(s)
      脇田 将裕, 高橋 暁子, 大谷 直子, 原 英二
    • Organizer
      日本癌学会総会
    • Related Report
      2020 Research-status Report
  • [Book] 実験医学2022

    • Author(s)
      脇田 将裕, 原 英二
    • Publisher
      羊土社
    • Related Report
      2021 Annual Research Report
  • [Book] 生物の寿命延長2022

    • Author(s)
      南野 徹
    • Total Pages
      460
    • Publisher
      エヌ・ティー・エス
    • ISBN
      9784860437732
    • Related Report
      2021 Annual Research Report
  • [Book] 炎症と免疫2021

    • Author(s)
      脇田 将裕, 原 英二
    • Publisher
      先端医学社
    • Related Report
      2021 Annual Research Report
  • [Remarks] 老化細胞を選択的に死滅させる薬剤候補を同定

    • URL

      https://www.amed.go.jp/news/seika/kenkyu/20200805.html

    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2023-12-25  

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