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Mechanisms of cell differentiation and dedifferentiation by restructuring the cytoskeleton in vitro

Research Project

Project/Area Number 19K06444
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 42030:Animal life science-related
Research InstitutionNihon University

Principal Investigator

KANO Koichiro  日本大学, 生物資源科学部, 教授 (80271039)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
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細胞接着 / 増殖 / 脱分化 / 多能性獲得 / 転写調節因子 / 細胞骨格 / アクチンストレスファイバー / Gアクチン / Fアクチン / 卵胞顆粒層細胞 / 細胞形態 / 網羅的遺伝子発現解析 / 分化
Outline of Research at the Start

細胞分化は特異的な転写因子群の発現によって制御される。また、細胞分化に伴ってアクチン細胞骨格を再構築し、分化細胞それぞれに特徴的な形態へと変化することが知られている。しかし、アクチン細胞骨格の形成、崩壊および再構築による形態変化と分化および脱分化という現象がどのような分子機構によって惹起されるのかについては明らかではない。本研究では、細胞分化、脱分化および多能性獲得がアクチンの動態によって直接制御されることを明らかにし、細胞の「かたち」の変化が分化あるいは脱分化、さらには多能性獲得(幹細胞への可塑性)といった細胞機能の転換を決定する普遍的な機構であることを明らかにする。

Outline of Final Research Achievements

This study aimed to determine whether changes in "cell shape" determine the conversion of cellular functions such as dedifferentiation and multipotency. When porcine follicular granulosa cells (pGC) formed focal adhesion and F-actin after 6 hours of culture on the bottom of the culture dish, the expression of pGC-specific genes, such as aromatase genes, was decreased rapidly. In contrast, the expression of genes involved in cytoskeleton (CA) formation rapidly increased until 12 hours of culture, when cells elongated. We analyzed the upstream regions of genes whose expression increased significantly until 12 hours of culture when pGC de-differentiated. As a result, two transcriptional regulator genes involved in cell shape and cell proliferation were extracted.

Academic Significance and Societal Importance of the Research Achievements

「細胞は特異的な転写因子の発現によって機能的および形態的に分化する」と考えられているなかで、本研究によって、メカノストレスが普遍的に体細胞の分化運命決定を制御する分子メカニズムを明らかにすることは、細胞分化および多能性獲得における新しい概念を生み出すことができる。また、核内転写因子による細胞機能制御の分子メカニズムについては、既に多くの研究がなされているが、本研究で実施するメカノストレスが惹起する体細胞リプログラミングの普遍的な分子メカニズムの解明に取り組むことは、外来遺伝子の導入を必要としない新規の人工多能性細胞の開発につながると考えられる。

Report

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

    (5 results)

All 2020 Other

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Remarks (1 results)

  • [Journal Article] Generation of metabolically functional hepatocyte‐like cells from dedifferentiated fat cells by Foxa2, Hnf4a and Sall1 transduction2020

    • Author(s)
      Hagiwara Reiko、Oki Yoshinao、Matsumaru Takashi、Ibayashi Shiho、Kano Koichiro
    • Journal Title

      Genes to Cells

      Volume: 25 Issue: 12 Pages: 811-824

    • DOI

      10.1111/gtc.12814

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Therapeutic potential of mature adipocyte-derived dedifferentiated fat cells for inflammatory bowel disease2020

    • Author(s)
      Ishioka Shigeki、Hosokawa Takashi、Ikeda Taro、Konuma Noriyoshi、Kaneda Hide、Ohashi Kensuke、Furuya Takeshi、Masuko Takayuki、Taniguchi Hiroaki、Kano Koichiro、Koshinaga Tsugumichi、Matsumoto Taro
    • Journal Title

      Pediatric Surgery International

      Volume: 36 Issue: 7 Pages: 799-807

    • DOI

      10.1007/s00383-020-04681-5

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] All-trans retinoic acid induces reprogramming of canine dedifferentiated cells into neuron-like cells2020

    • Author(s)
      Nakano Rei, Kitanaka Taku, Namba Shinichi, Kitanaka Nanako, Sato Masaki, Shibukawa Yoshiyuki, Masuhiro Yoshikazu, Kano Koichiro, Matsumoto Taro, Sugiya Hiroshi
    • Journal Title

      PLOS ONE

      Volume: 15 Issue: 3 Pages: e0229892-e0229892

    • DOI

      10.1371/journal.pone.0229892

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The insulin-PI3K-Rac1 axis contributes to terminal adipocyte differentiation through regulation of actin cytoskeleton dynamics2020

    • Author(s)
      Kunitomi H, Oki Y, Onishi N, Kano K, Banno K, Aoki D, Saya H, Nobusue H
    • Journal Title

      Genes to Cells

      Volume: 25 Issue: 3 Pages: 165-174

    • DOI

      10.1111/gtc.12747

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Remarks] Google Scholar

    • URL

      https://scholar.google.com/citations?user=anqcM3wAAAAJ&hl=en

    • Related Report
      2020 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2023-12-25  

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