作者: Sébastien Goudenege , Elise Dargelos , Stéphane Claverol , Marc Bonneu , Patrick Cottin
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摘要: Caveolae are specialised RAFTs (detergent-resistant membrane microdomains enriched in cholesterol and glycosphingolipids). Caveolin, the main caveolae protein, is essential to organisation of proteins lipids, interacts with numerous mediating through a 'Caveolin Scalfolding Domain'. Consequently, play major role signal transduction appear be veritable signalling platforms. In muscle cells, for fusion differentiation, also implicated type muscular dystrophy (LGMD1C). preceding work, we demonstrated presence active milli-calpain (m-calpain) myotube caveolae. Calpains calcium-dependent proteases involved several cellular processes, including myoblast migration, PKC-mediated intracellular remodelling cytoskeleton. For first time, have proved cholesterol-dependent localisation m-calpain C 2 12 myotubes. Calpain-dependent involvement was strongly suggested. Furthermore, eight differentially expressed associated were identified by 2-DE LC-MS/MS analyses using an antisense strategy. This proteomic study demonstrates action on vimentin, desmin vinculin suggests m-calpain's mitochondrial pathways.