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Down-regulation of an ankyrin repeat-containing protein, V-1, during skeletal muscle differentiation and its re-expression in the regenerative process of muscular dystrophy.

Authors: Furukawa, Y  Hashimoto, N  Yamakuni, T  Ishida, Y  Kato, C  Ogashiwa, M  Kobayashi, M  Kobayashi, T  Nonaka, I  Mizusawa, H  Song, SY 
Citation: Furukawa Y, etal., Neuromuscul Disord 2003 Jan;13(1):32-41.
Pubmed: (View Article at PubMed) PMID:12467730

Using Western blot analysis and immunohistochemical methods, we examined the expression of V-1, a member of the ankyrin repeat-containing protein family, during differentiation and regeneration of skeletal muscle. The expression of V-1 was high in cultured myoblasts and decreased during their differentiation into myotubes, while high expression was maintained when muscle differentiation was inhibited by treatment with basic fibroblast growth factor. Down-regulation of V-1 also occurred during in vivo muscle differentiation from embryonic to postnatal stages, reaching an undetectable level in mature skeletal muscle. In contrast, strong V-1 immunoreactivity was detected again in myoblasts and regenerating muscle fibers with a small diameter, which were observed in Duchenne muscular dystrophy and its animal model, mdx mouse. Thus, it seems that V-1 is a good marker for early stage of muscle regeneration and changes of its expression suggest that V-1 plays a role in prenatal muscle differentiation and postnatal muscle regeneration.

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CRRD Object Information
CRRD ID: 632798
Created: 2003-08-29
Species: All species
Last Modified: 2004-05-25
Status: ACTIVE



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