Improving myoblast differentiation on electrospun poly(ε-caprolactone) scaffolds

Phammela N. Abarzúa-Illanes, Cristina Padilla, Andrea Ramos, Mauricio Isaacs, Jorge Ramos-Grez, Hugo C. Olguín, Loreto M. Valenzuela

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Polymer scaffolds are used as an alternative to support tissue regeneration when it does not occur on its own. Cell response on polymer scaffolds is determined by factors such as polymer composition, topology, and the presence of other molecules. We evaluated the cellular response of murine skeletal muscle myoblasts on aligned or unaligned fibers obtained by electrospinning poly(ε-caprolactone) (PCL), and blends with poly(lactic-co-glycolic acid) (PLGA) or decorin, a proteoglycan known to regulate myogenesis. The results showed that aligned PCL fibers with higher content of PLGA promote cell growth and improve the quality of differentiation with PLGA scaffolds having the highest confluence at over 68% of coverage per field of view for myoblasts and more than 7% of coverage for myotubes. At the same time, the addition of decorin greatly improves the quantity and quality of differentiated cells in terms of cell fusion, myotube length and thickness, being 71, 10, and 51% greater than without the protein, respectively. Interestingly, our results suggest that at certain concentrations, the effect of decorin on myoblast differentiation exceeds the topological effect of fiber alignment.

Original languageEnglish
Pages (from-to)2241-2251
Number of pages11
JournalJournal of Biomedical Materials Research - Part A
Volume105
Issue number8
DOIs
StatePublished - Aug 2017
Externally publishedYes

Bibliographical note

Funding Information:
The authors thank all the members from Dr. Olguin's and Dr. Valenzuela's laboratories for insightful discussions and suggestions. This work was supported by the interdisciplinary grant VRI 43/2011 from Pontificia Universidad Cat?lica de Chile, CONICYT (FONDECYT 11121392 and 11130631), and Ministerio de Econom?a, Fomento y Turismo, Chile (Project RC 130006, CILIS, granted by Fondo de Innovaci?n para la Competitividad).

Publisher Copyright:
© 2017 Wiley Periodicals, Inc.

Keywords

  • PCL
  • PLGA
  • decorin
  • electrospinning
  • muscle regeneration
  • myoblasts

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