The promotion of a functional fibrosis in skeletal muscle with volumetric muscle loss injury following the transplantation of muscle-ECM

Benjamin T. Corona, Xiaowu Wu, Catherine L. Ward, Jennifer S. McDaniel, Christopher R. Rathbone, Thomas J. Walters

Research output: Contribution to journalArticlepeer-review

113 Scopus citations

Abstract

Tissue engineering strategies that primarily use biological extracellular matrices (ECMs) with or without the inclusion of a stem or progenitor cell source are under development for the treatment of trauma resulting in the loss of a large volume of skeletal muscle (i.e., volumetric muscle loss; VML). The explicit goal is to restore functional capacity to the injured tissue by promoting generation of muscle fibers. In the current study, a syngeneic muscle-derived ECM (mECM) was transplanted in a rat tibialis anterior (TA) muscle VML model. Instead of muscle fiber generation a large fibrotic mass was produced by mECM transplantation out to six months post-injury. Surprisingly, recovery of one-third of the original functional deficit was still achieved by two months post-injury following mECM transplantation. These counterintuitive findings may be due, at least in part, to the ability of mECM to attenuate muscle damage in the remaining muscle as compared to non-repaired muscle. These findings point to a novel role of biological ECMs for the treatment of VML, wherein the remaining muscle mass is protected from prolonged overload injury.

Original languageEnglish (US)
Pages (from-to)3324-3335
Number of pages12
JournalBiomaterials
Volume34
Issue number13
DOIs
StatePublished - Apr 2013
Externally publishedYes

Keywords

  • ECM (extracellular matrix)
  • Fibrosis
  • Muscle
  • Transplantation
  • Trauma
  • VML (volumetric muscle loss)

ASJC Scopus subject areas

  • Bioengineering
  • Ceramics and Composites
  • Biophysics
  • Biomaterials
  • Mechanics of Materials

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