Fiche publication
Date publication
juillet 2002
Journal
Journal of biotechnology
Auteurs
Membres identifiés du Cancéropôle Est :
Pr DEDIEU Stéphane
Tous les auteurs :
Dargelos E, Moyen C, Dedieu S, Veschambre P, Poussard S, Vuillier-Devillers K, Brustis JJ, Cottin P
Lien Pubmed
Résumé
p94 belongs to the calpain family of enzymes, also called calcium-activated neutral proteases and is mainly expressed in the skeletal muscle. Mutations affecting the gene coding for p94 are responsible for a myopathy syndrome called Limb Girdle Muscular Dystrophy type 2A (LGMD2A). Although the activity of p94 seems necessary for muscle function, the biological role of the enzyme is still unknown. The goal of this study was to develop a muscle cell line in which the expression level of p94 can be regulated, by an inducible way. In this study, a biological system was developed which allowed mimicking, in vitro, of part of the events occurring in patients (i.e. a decrease of p94 activity). The first results indicate that the decrease in p94 activity results in a significant increase of myogenin level, a high specific transcription factor involved in myoblast fusion. This muscle specific inducible system is an interesting biological tool to assess specifically p94 function(s) in cultured muscle cells. According to the present results, p94 seems at least to be involved in a myogenesis regulation pathway via its action on certain proteins belonging to the myogenic regulator factor family.
Mots clés
Animals, Blotting, Western, Calpain, genetics, Cell Culture Techniques, methods, Gene Expression, physiology, Gene Expression Regulation, Isopropyl Thiogalactoside, metabolism, Mice, Muscle Development, genetics, Muscle, Skeletal, cytology, Myogenin, metabolism, Nucleic Acid Amplification Techniques, RNA, Antisense, genetics, RNA, Messenger, genetics
Référence
J. Biotechnol.. 2002 Jul;96(3):271-9
