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Mechanistic analysis of somatic cell reprogramming using paused iPSCs

Research Project

Project/Area Number 21H02678
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 48040:Medical biochemistry-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

Hisatake Koji  筑波大学, 医学医療系, 教授 (70271236)

Co-Investigator(Kenkyū-buntansha) 福田 綾  筑波大学, 医学医療系, 准教授 (50436276)
西村 健  筑波大学, 医学医療系, 教授 (80500610)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2022: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2021: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
KeywordsiPS細胞 / X染色体の再活性化 / KLF4 / Osr2 / E2F / 転写 / クロマチン / リプログラミング / 転写制御 / Klf4 / 転写因子 / サイレンシング / 間葉上皮転換 / XCR / RNA-seq / Xist
Outline of Research at the Start

本研究では,リプログラミングを様々な段階で一時停止させた均質な細胞群(Paused iPS細胞)を利用し,遺伝子発現解析よりこれまでに得られた成果を基に,リプログラミング過程について以下の点を明らかにする。まず1)間葉上皮転換(MET)に関与する転写因子群の同定とその分子機構を明らかにし,次に2)レトロウイルスサイレンシングに関与する分子の同定とその作用機構を明らかにする。さらに,3)カルシウムシグナリングの多能性獲得への作用機構と4)X染色体の再活性化(XCR)に関与する転写関連因子の同定とその分子機構も解析する。

Outline of Final Research Achievements

We have reported generation of partially reprogrammed iPSCs that have paused reprogramming during intermediate stages (Paused iPSCs). In this study, we found that 1) downregulation of Osr2 plays a critical role in mesenchymal-epithelial transition at an early stage of reprogramming, 2) ILF2 and LF3 are involved in silencing of retroviral gene expression by repressing translation of viral mRNA, 3) during reprogramming of female cells, XCR initiates near the centromere by the action of KDM1A, and 4) E2F4 impacts reprogramming at a stage-specific manger; i.e. negatively at an early stage and positively at a late stage.

Academic Significance and Societal Importance of the Research Achievements

iPS細胞の中間体(Paused iPS細胞)の解析から,間葉上皮転換(MET)でのOsr2の役割,レトロウイルスサイレンシングでのILF2とILF3の作用,X染色体の再活性化へのKDM1Aの関与,E2F4のプログラミングへの影響などを明らかにした。この研究から明らかになった分子機構に関与する因子群はリプログラミング効率に影響する。各因子に作用するシグナル伝達系を薬物等によって操作することにより,高い多能性を有するiPS細胞を効率良く誘導する方法に繋げることが可能になり,iPS細胞の再生医療への実用化を促進することができる。

Report

(3 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (12 results)

All 2022 2021

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (7 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] Downregulation of Odd-Skipped Related 2, a Novel Regulator of Epithelial-Mesenchymal Transition, Enables Efficient Somatic Cell Reprogramming2022

    • Author(s)
      Anh Le Phuong Hoang、Nishimura Ken、Kuno Akihiro、Linh Nguyen Thuy、Kato Tetsuo、Ohtaka Manami、Nakanishi Mahito、Sugihara Eiji、Sato Taka-Aki、Hayashi Yohei、Fukuda Aya、Hisatake Koji
    • Journal Title

      Stem Cells

      Volume: 40 Issue: 4 Pages: 397-410

    • DOI

      10.1093/stmcls/sxac012

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Locus-Specific Isolation of the Nanog Chromatin Identifies Regulators Relevant to Pluripotency of Mouse Embryonic Stem Cells and Reprogramming of Somatic Cells2022

    • Author(s)
      Burramsetty Arun Kumar、Nishimura Ken、Kishimoto Takumi、Hamzah Muhammad、Kuno Akihiro、Fukuda Aya、Hisatake Koji
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 23 Issue: 23 Pages: 15242-15242

    • DOI

      10.3390/ijms232315242

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Early reactivation of clustered genes on the inactive X chromosome during somatic cell reprogramming2022

    • Author(s)
      Aizawa Shiho、Nishimura Ken、Mondejar Gonzalo Seminario、Kumar Arun、Bui Phuong Linh、Tran Yen Thi Hai、Kuno Akihiro、Muratani Masafumi、Kobayashi Shin、Nabekura Tsukasa、Shibuya Akira、Sugihara Eiji、Sato Taka-Aki、Fukuda Aya、Hayashi Yohei、Hisatake Koji
    • Journal Title

      Stem Cell Reports

      Volume: 17 Issue: 1 Pages: 53-67

    • DOI

      10.1016/j.stemcr.2021.11.008

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Structurally-discovered KLF4 variants accelerate and stabilize reprogramming to pluripotency2022

    • Author(s)
      Borisova Evgeniia、Nishimura Ken、An Yuri、Takami Miho、Li Jingyue、Song Dan、Matsuo-Takasaki Mami、Luijkx Dorian、Aizawa Shiho、Kuno Akihiro、Sugihara Eiji、Sato Taka-aki、Yumoto Fumiaki、Terada Tohru、Hisatake Koji、Hayashi Yohei
    • Journal Title

      iScience

      Volume: 25 Issue: 1 Pages: 103525-103525

    • DOI

      10.1016/j.isci.2021.103525

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Utilization of a novel Sendai virus vector in ex vivo gene therapy for hemophilia A2021

    • Author(s)
      Yamaki Yuni、Fukushima Takashi、Yoshida Naomi、Nishimura Ken、Fukuda Aya、Hisatake Koji、Aso Masayuki、Sakasai Tomoki、Kijima-Tanaka Junko、Miwa Yoshihiro、Nakanishi Mahito、Sumazaki Ryo、Takada Hidetoshi
    • Journal Title

      International Journal of Hematology

      Volume: 113 Issue: 4 Pages: 493-499

    • DOI

      10.1007/s12185-020-03059-6

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] A dCas9 based method can identify novel regulators of Nanog and pluripotency2022

    • Author(s)
      Nishimura Ken、Arun Burramsett、Hisatake Koji
    • Organizer
      ISSCR2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dual function of E2F4 on iPSC generation2022

    • Author(s)
      Nishimura Ken、Kishimoto Takumi、Hisatake Koji
    • Organizer
      TGSW2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] iPS細胞誘導過程において二相性の機能を有するE2F4の解析2022

    • Author(s)
      西村 健、岸本 拓実、久武 幸司
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Interleukin Enhancer Binding Factors 2 and 3 inhibit retrovirus expression2021

    • Author(s)
      Gonzalo SB, Bui PL, Nishimura K, Hisatake K
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Downregulation of Odd-Skipped Related 2, a Novel Regulator of Epithelial-Mesenchymal Transition, Enables Efficient Somatic Cell Reprogramming2021

    • Author(s)
      Nishimura K, Anh LPH, Linh NT, Kato T, Hisatake K
    • Organizer
      ISSCR2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Interleukin Enhancer Binding Factors 2 and 3 inhibit retrovirus expression2021

    • Author(s)
      Gonzalo SB, Nishimura K, Hisatake K
    • Organizer
      Tsukuba Conference 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mechanistic analysis of pluripotency acquisition by using paused iPSCs2021

    • Author(s)
      Hamzah M, Nishimura K, Hisatake K
    • Organizer
      Tsukuba Conference 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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