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Restorative macrophage-derived RNAseT2 stimulates muscle stem cell fusion via an SLK/N-WASP/actin bundling dependent axis - PubMed

3 hours ago
  • #stem cell fusion
  • #macrophage signaling
  • #muscle regeneration
  • Restorative macrophages secrete RNAseT2 to stimulate muscle stem cell (MuSC) fusion during muscle repair.
  • RNAseT2 enters MuSCs via the mannose receptor and induces actin bundling, essential for cell-cell fusion, through a SLK/N-WASP dependent pathway.
  • In vivo, RNAseT2 overexpression enhances fusion in new myofibers, while RNAseT2-deficient macrophages lead to fusion defects and smaller myofibers.