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Generation of a limb-like organoid by taking advantage of direct reprogramming and 3D-culture techniques

Research Project

Project/Area Number 20K22658
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0702:Biology at cellular to organismal levels, and related fields
Research InstitutionKyushu University

Principal Investigator

Atsuta Yuji  九州大学, 理学研究院, 助教 (80874685)

Project Period (FY) 2020-09-11 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords四肢前駆細胞 / ダイレクトリプログラミング / オルガノイド / 3次元培養 / リプログラミング / 3次元培養 / 四肢形成 / 四肢再生
Outline of Research at the Start

四肢再生は積年の治療課題である。米国では約200万人が外傷性や先天性の四肢欠損を患っていることから、本邦においても多くの症例数が推定される。しかしながら、昨今の再生生物学の目覚ましい発展を以ってしても、切断肢を完全な四肢構造で交換、再生するという究極的な細胞療法の実現には程遠い。本研究では、四肢再生の基盤構築を念頭におき、ダイレクトリプログラミング法および3次元培養系を駆使して、線維芽細胞から四肢様オルガノイド(リムボイド)を創出する方法論を確立する。

Outline of Final Research Achievements

The limb bud consists of mesenchymal progenitors derived from the lateral plate mesoderm (LPM) that produce most of the tissues of the mature limb. The LPM also gives rise to the mesodermal components of the flank and neck. However, the mesenchymal cells generated at these other axial levels cannot produce the variety of cell types found in the limb bud, even when exposed to signals responsible for organizing the limb bud. By taking advantage of a reprogramming approach, we find a set of factors (Prdm16, Zbtb16 and Lin28) that are capable of imparting limb progenitor-like properties to non-limb fibroblasts. The reprogrammed cells show similar gene expression profiles, and can differentiate into similar cell types, as endogenous limb progenitors. The further addition of Lin41 potentiates proliferation of the reprogrammed cells while suppressing differentiation. These results suggest that these same four key factors may play pivotal roles in the formation of endogenous limb progenitors.

Academic Significance and Societal Importance of the Research Achievements

本研究で見出された成果は、四肢形成開始のメカニズムの理解を深めるとともに、四肢再生医療の発展へと寄与することが期待される。
(1)四肢形成の理解;見出されたリプログラム因子は、四肢形成過程の最初期段階である、四肢前駆細胞の特定化においても中心的な役割を果たすことが考えられる。
(2)四肢再生医療への応用;本研究成果により手足以外の細胞から直接、LP細胞を作製できることが示唆された。誘導されたリプログラム細胞は細胞治療へと活用できる可能性がある。

Report

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

    (4 results)

All 2021 2020

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (1 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Repeated mutation of a developmental enhancer contributed to human thermoregulatory evolution2021

    • Author(s)
      Aldea Daniel、Atsuta Yuji、Kokalari Blerina、Schaffner Stephen F.、Prasasya Rexxi D.、Aharoni Adam、Dingwall Heather L.、Warder Bailey、Kamberov Yana G.
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 118 Issue: 16

    • DOI

      10.1073/pnas.2021722118

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] In ovo electroporation of chicken limb bud ectoderm2021

    • Author(s)
      Tomizawa Reiko R.、Tabin Clifford J.、Atsuta Yuji
    • Journal Title

      Developmental Dynamics

      Volume: - Issue: 9 Pages: 1628-1638

    • DOI

      10.1002/dvdy.352

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Direct Reprogramming of Non-limb Fibroblasts to Cells with Properties of Limb Progenitors2021

    • Author(s)
      Atsuta Yuji、Lee Changhee、Rodrigues Alan R.、Colle Charlotte、Tomizawa Reiko R.、Lujan Ernesto G.、Tschopp Patrick、Gorham Joshua M.、Vannier Jean-Pierre、Seidman Christine E.、Seidman Jonathan G.、Pourqui? Olivier、Tabin Clifford J.
    • Journal Title

      bioRxiv

      Volume: -

    • DOI

      10.1101/2021.10.01.462632

    • Related Report
      2021 Annual Research Report
    • Open Access
  • [Presentation] Making vertebrate limbs from non-limb fibroblasts2020

    • Author(s)
      熱田勇士
    • Organizer
      第79回米国発生学会年会
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2020-09-29   Modified: 2023-01-30  

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