Ribonucleotide reductase M2B in the myofibers modulates stem cell fate in skeletal muscle

Wan Jing Chen, I. Hsuan Lin, Chien Wei Lee, Kiyoshi Yoshioka, Yusuke Ono, Yu Ting Yan, Yun Yen, Yi Fan Chen

研究成果: 雜誌貢獻文章同行評審

2 引文 斯高帕斯(Scopus)


The balance among quiescence, differentiation, and self-renewal of skeletal muscle stem cells (MuSCs) is tightly regulated by their intrinsic and extrinsic properties from the niche. How the niche controls MuSC fate remains unclear. Ribonucleotide reductase M2B (Rrm2b) modulates MuSC quiescence/differentiation in muscle in response to injury. Rrm2b knockout in myofibers, but not in MuSCs, led to weakness of muscles, such as a loss of muscle mass and strength. After muscle injury, damaged myofibers were more efficiently repaired in the Rrm2b myofiber-specific knockout mice than the control mice, but these myofibers were thinner and showed weak functioning. Rrm2b-deleted myofibers released several myokines, which trigger MuSCs to differentiate but not re-enter the quiescent stage to replenish the stem cell pool. Overall, Rrm2b in the myofibers plays a critical role in modulating the MuSC fate by modifying the microenvironment, and it may lead to a possible strategy to treat muscle disorders.
期刊npj Regenerative Medicine
出版狀態已發佈 - 12月 2022

ASJC Scopus subject areas

  • 醫藥(雜項)
  • 生物醫學工程
  • 發展生物學
  • 細胞生物學


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