Osteopontin expression in coculture of differentiating rat fetal skeletal fibroblasts and myoblasts.

In Vitro Cellular & Developmental Biology. Animal
Renata O PereiraLaís Carvalho

Abstract

Skeletal fibroblasts in vitro can acquire myofibroblast phenotypes by the development of biochemical and morphological features, mainly the expression of alpha-smooth-muscle actin (alpha-SMA). Myogenic differentiation is a central event in skeletal muscle development, and has commonly been studied in vitro in the context of skeletal muscle development and regeneration. Controlling this process is a complex set of interactions between myoblasts and the extracellular matrix. Osteopontin (OPN) is an acidic, phosphorylated matrix protein that contains an Arg-Gly-Asp (RGD) cell attachment sequence and has been identified as an adhesive and migratory substrate for several cell types. The aim of this study was to investigate osteopontin expression during the differentiation of skeletal fibroblasts into myofibroblasts and during myogenesis in a coculture model. Fibroblasts and myoblasts were obtained from skeletal muscle of 18-d-old Wistar strain rat fetuses by enzymatic dissociation. At 1 and 9 d, cocultures were immunolabeled, and the cells were also separately subjected to Western blotting to analyze OPN expression. Our data using confocal microscopy showed that myoblasts displayed a strong staining for OPN and that this labeling wa...Continue Reading

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Citations

May 20, 2009·The Journal of Clinical Investigation·Sylvia A VetroneMelissa J Spencer
Jul 30, 2011·Skeletal Muscle·Tyesha N Burks, Ronald D Cohn
Mar 17, 2012·Connective Tissue Research·Kazunori HamamuraHiroki Yokota
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Jul 6, 2010·Journal of Cellular and Molecular Medicine·Pieter H AnborghAnn F Chambers
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Mar 11, 2016·The American Journal of Pathology·Mutsuki KuraokaShin'ichi Takeda
Apr 29, 2009·Tissue Engineering. Part a·Tetsuya ImamuraOsamu Nishizawa

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