Impact of Human Epidermal Growth Factor on Tissue-Engineered Skeletal Muscle Structure and Function.

Tissue Engineering. Part a
Olga Maria WroblewskiLisa M Larkin

Abstract

Skeletal muscle tissue engineering technologies have the potential to treat volumetric muscle loss (VML) by growing exogenous muscle tissue. However, there has been limited success in engineering human cell-sourced skeletal muscle with structure and function comparable to native adult human muscle. The use of growth factors at optimal concentrations and delivery times is critical in enhancing the in vitro myogenesis of satellite cells used in engineered skeletal muscle. The mitogenic protein human epidermal growth factor (hEGF) is of particular interest because it enhances satellite cell proliferation and sarcomeric structure formation in myogenic cell cultures. In this study, we used our scaffold-free tissue-engineered skeletal muscle units (SMUs) to examine the effects of hEGF on the structure and function of human cell-sourced engineered skeletal muscle. During our established SMU fabrication process, human muscle cell isolates were exposed to media treated with 7.5 nM hEGF at three different time spans during the 21-day cell culture period: 0 to 6 days postseeding (hEGF-treated Muscle Growth Media [MGM] Only), 7 to 21 days postseeding (hEGF-treated Muscle Differentiation Media (MDM) Only), and 0 to 21 days postseeding (hEGF...Continue Reading

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Methods Mentioned

BETA
biopsies
light microscopy
force measurements
Light

Software Mentioned

GraphPad Prism
LabVIEW
ImageJ

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