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Adult zebrafish are able to heal large-sized cutaneous wounds in hours with little to no scarring. This rapid re-epithelialization is crucial for preventing infection and jumpstarting the subsequent regeneration of damaged tissues. Despite significant progress in understanding this process, it remains unclear how vast numbers of epithelial cells are orchestrated on an organismic scale to ensure the timely closure of millimeter-sized wounds.
Highlights • Tendon cells connect to the pupal cuticle through the Dpy apical ECM matrix • Dpy matrix undergoes a filament-like transformation during muscle development • Muscle tension applied to the tendon promotes remodeling of Dpy filaments • Diffusible apical ECM protein Qsm enhances the tensile strength of Dpy filaments Summary Contractile tension is critical for musculoskeletal system development and maintenance.
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