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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

M-cadherin and beta-catenin participate in differentiation of rat satellite cells.

Cadherins belong to a large family of membrane glycoprotein adhesion receptors that mediate homophilic, calcium-dependent cell adhesion. During myogenesis, cadherins are involved in initial cell-to-cell recognition; and it has also been suggested that they play a role in the initiation of myoblast fusion into multinuclear myotubes. One of the members of the cadherin family, M-cadherin, has been detected during embryogenesis in myogenic cells of somitic origin and in adult muscles. We investigated the distribution and function of M-cadherin and beta-catenin during differentiation of myoblasts in primary cultures of rat satellite cells. We found that M-cadherin was accumulated at the areas of contact between fusing myoblasts and that it colocalized with beta-catenin. Moreover, beta-catenin colocalized with actin in pre-fusing myoblasts. We show that myoblast differentiation is accompanied by an increase in the amounts of M-cadherin and beta-catenin both at the mRNA and the protein level. Flow cytometry analysis showed that M-cadherin expression was highest in fusing myoblasts. In addition, an antibody specific for the extracellular domain of M-cadherin inhibited the fusion of cultured myoblasts. These data suggest that regulation of the M-cadherin level plays an important role in the differentiation of satellite cells and in myoblast fusion in primary cultures.[1]


  1. M-cadherin and beta-catenin participate in differentiation of rat satellite cells. Wróbel, E., Brzóska, E., Moraczewski, J. Eur. J. Cell Biol. (2007) [Pubmed]
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