Ontology highlight
ABSTRACT:
SUBMITTER: Le Grand F
PROVIDER: S-EPMC2743383 | biostudies-literature | 2009 Jun
REPOSITORIES: biostudies-literature
Cell stem cell 20090601 6
Satellite cells in skeletal muscle are a heterogeneous population of stem cells and committed progenitors. We found that quiescent satellite stem cells expressed the Wnt receptor Fzd7 and that its candidate ligand Wnt7a was upregulated during regeneration. Wnt7a markedly stimulated the symmetric expansion of satellite stem cells but did not affect the growth or differentiation of myoblasts. Silencing of Fzd7 abrogated Wnt7a binding and stimulation of stem cell expansion. Wnt7a signaling induced ...[more]