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The Stat3-Fam3a axis promotes muscle stem cell myogenic lineage progression by inducing mitochondrial respiration

Author

Listed:
  • David Sala

    (Sanford Burnham Prebys Medical Discovery Institute)

  • Thomas J. Cunningham

    (Sanford Burnham Prebys Medical Discovery Institute
    MRC Harwell Institute)

  • Michael J. Stec

    (Sanford Burnham Prebys Medical Discovery Institute)

  • Usue Etxaniz

    (Sanford Burnham Prebys Medical Discovery Institute)

  • Chiara Nicoletti

    (Sanford Burnham Prebys Medical Discovery Institute)

  • Alessandra Dall’Agnese

    (Sanford Burnham Prebys Medical Discovery Institute)

  • Pier Lorenzo Puri

    (Sanford Burnham Prebys Medical Discovery Institute
    Fondazione Santa Lucia)

  • Gregg Duester

    (Sanford Burnham Prebys Medical Discovery Institute)

  • Lucia Latella

    (Fondazione Santa Lucia
    National Research Council of Italy)

  • Alessandra Sacco

    (Sanford Burnham Prebys Medical Discovery Institute)

Abstract

Metabolic reprogramming is an active regulator of stem cell fate choices, and successful stem cell differentiation in different compartments requires the induction of oxidative phosphorylation. However, the mechanisms that promote mitochondrial respiration during stem cell differentiation are poorly understood. Here we demonstrate that Stat3 promotes muscle stem cell myogenic lineage progression by stimulating mitochondrial respiration in mice. We identify Fam3a, a cytokine-like protein, as a major Stat3 downstream effector in muscle stem cells. We demonstrate that Fam3a is required for muscle stem cell commitment and skeletal muscle development. We show that myogenic cells secrete Fam3a, and exposure of Stat3-ablated muscle stem cells to recombinant Fam3a in vitro and in vivo rescues their defects in mitochondrial respiration and myogenic commitment. Together, these findings indicate that Fam3a is a Stat3-regulated secreted factor that promotes muscle stem cell oxidative metabolism and differentiation, and suggests that Fam3a is a potential tool to modulate cell fate choices.

Suggested Citation

  • David Sala & Thomas J. Cunningham & Michael J. Stec & Usue Etxaniz & Chiara Nicoletti & Alessandra Dall’Agnese & Pier Lorenzo Puri & Gregg Duester & Lucia Latella & Alessandra Sacco, 2019. "The Stat3-Fam3a axis promotes muscle stem cell myogenic lineage progression by inducing mitochondrial respiration," Nature Communications, Nature, vol. 10(1), pages 1-16, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09746-1
    DOI: 10.1038/s41467-019-09746-1
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    Cited by:

    1. Chuxiang Lei & Haoxuan Kan & Xiangyu Xian & Wenlin Chen & Wenxuan Xiang & Xiaohong Song & Jianqiang Wu & Dan Yang & Yuehong Zheng, 2023. "FAM3A reshapes VSMC fate specification in abdominal aortic aneurysm by regulating KLF4 ubiquitination," Nature Communications, Nature, vol. 14(1), pages 1-20, December.

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