Synthetic matrix enhances transplanted satellite cell engraftment in dystrophic and aged skeletal muscle with comorbid trauma

Woojin M. Han, Shannon E. Anderson, Mahir Mohiuddin, Daniela Barros, Shadi A. Nakhai, Eunjung Shin, Isabel Freitas Amaral, Ana Paula Pêgo, Andrés J. García, Young C. Jang

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Muscle satellite cells (MuSCs) play a central role in muscle regeneration, but their quantity and function decline with comorbidity of trauma, aging, and muscle diseases. Although transplantation of MuSCs in traumatically injured muscle in the comorbid context of aging or pathology is a strategy to boost muscle regeneration, an effective cell delivery strategy in these contexts has not been developed. We engineered a synthetic hydrogel-based matrix with optimal mechanical, cell-adhesive, and protease-degradable properties that promotes MuSC survival, proliferation, and differentiation. Furthermore, we establish a biomaterial-mediated cell delivery strategy for treating muscle trauma, where intramuscular injections may not be applicable. Delivery of MuSCs in the engineered matrix significantly improved in vivo cell survival, proliferation, and engraftment in nonirradiated and immunocompetent muscles of aged and dystrophic mice compared to collagen gels and cell-only controls. This platform may be suitable for treating craniofacial and limb muscle trauma, as well as postoperative wounds of elderly and dystrophic patients.

Original languageEnglish
Article numbereaar4008
JournalScience advances
Volume4
Issue number8
DOIs
StatePublished - 15 Aug 2018
Externally publishedYes

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