Direct isolation of satellite cells for skeletal muscle regeneration |
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Authors: | Montarras Didier Morgan Jennifer Collins Charlotte Relaix Frédéric Zaffran Stéphane Cumano Ana Partridge Terence Buckingham Margaret |
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Institution: | CNRS Unité de Recherche Associée 2578, Department of Developmental Biology, INSERM, Pasteur Institute, 75724 Paris Cedex 15, France. dmontarr@pasteur.fr |
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Abstract: | Muscle satellite cells contribute to muscle regeneration. We have used a Pax3(GFP/+) mouse line to directly isolate (Pax3)(green fluorescent protein)-expressing muscle satellite cells, by flow cytometry from adult skeletal muscles, as a homogeneous population of small, nongranular, Pax7+, CD34+, CD45-, Sca1- cells. The flow cytometry parameters thus established enabled us to isolate satellite cells from wild-type muscles. Such cells, grafted into muscles of mdx nu/nu mice, contributed both to fiber repair and to the muscle satellite cell compartment. Expansion of these cells in culture before engraftment reduced their regenerative capacity. |
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