Abstract:
:Skeletal muscle satellite cells are adult muscle-derived stem cells receiving increasing attention. Sheep satellite cells have a greater similarity to human satellite cells with regard to metabolism, life span, proliferation and differentiation, than satellite cells of the rat and mouse. We have used 2-step enzymatic digestion and differential adhesion methods to isolate and purify sheep skeletal muscle satellite cells, identified the cells and induced differentiation to examine their pluripotency. The most efficient method for the isolation of sheep skeletal muscle satellite cells was the type I collagenase and trypsin 2-step digestion method, with the best conditions for in vitro culture being in medium containing 20% FBS+10% horse serum. Immunofluorescence staining showed that satellite cells expressed Desmin, α-Sarcomeric Actinin, MyoD1, Myf5 and PAX7. After myogenic induction, multinucleated myotubes formed, as indicated by the expression of MyoG and fast muscle myosin. After osteogenic induction, cells expressed Osteocalcin, with Alizarin Red and ALP (alkaline phosphatase) staining results both being positive. After adipogenic induction, cells expressed PPARγ2 (peroxisome-proliferator-activated receptor γ2) and clear lipid droplets were present around the cells, with Oil Red-O staining giving a positive result. In summary, a successful system has been established for the isolation, purification and identification of sheep skeletal muscle satellite cells.
journal_name
Cell Biol Intjournal_title
Cell biology internationalauthors
Wu H,Ren Y,Li S,Wang W,Yuan J,Guo X,Liu D,Cang Mdoi
10.1042/CBI20110487subject
Has Abstractpub_date
2012-06-01 00:00:00pages
579-87issue
6eissn
1065-6995issn
1095-8355pii
CBI20110487journal_volume
36pub_type
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