title: Secretome from mesenchymal stem cells induces angiogenesis via Cyr61.
abstract: It is well known that bone marrow-derived mesenchymal stem cells (MSCs) are involved in wound healing and regeneration responses. In this study, we globally profiled the proteome of MSCs to investigate critical factor(s) that may promote wound healing. Cysteine-rich protein 61 (Cyr61) was found to be abundantly present in MSCs. The presence of Cyr61 was confirmed by immunofluorescence staining and immunoblot analysis. Moreover, we showed that Cyr61 is present in the culture medium (secretome) of MSCs. The secretome of MSCs stimulates angiogenic response in vitro, and neovascularization in vivo. Depletion of Cyr61 completely abrogates the angiogenic-inducing capability of the MSC secretome. Importantly, addition of recombinant Cyr61 polypeptides restores the angiogenic activity of Cyr61-depleted secretome. Collectively, these data demonstrate that Cyr61 polypeptide in MSC secretome contributes to the angiogenesis-promoting activity, a key event needed for regeneration and repair of injured tissues. J. Cell. Physiol. 219: 563-571, 2009. (c) 2009 Wiley-Liss, Inc.
authors.affiliation: Gheens Center on Aging, University of Louisville School of Medicine, Louisville, Kentucky, USA.
authors.forename: Rosendo
authors.initials: R
authors.lastname: Estrada
authors.forename: Na
authors.initials: N
authors.lastname: Li
authors.forename: Harshini
authors.initials: H
authors.lastname: Sarojini
authors.forename: Jin
authors.initials: J
authors.lastname: An
authors.forename: Menq-Jer
authors.initials: MJ
authors.lastname: Lee
authors.forename: Eugenia
authors.initials: E
authors.lastname: Wang
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D003094:Collagen; D017077:Culture Media, Conditioned; D055515:Cysteine-Rich Protein 61 / Q000008:administration & dosage / Q000378:metabolism / Q000494:pharmacology / Q000502:physiology*; D004338:Drug Combinations; D042783:Endothelial Cells / Q000166:cytology / Q000187:drug effects / Q000502:physiology; D006801:Humans; D007797:Laminin; D008297:Male; D059630:Mesenchymal Stem Cells / Q000378:metabolism / Q000502:physiology*; D051379:Mice; D008810:Mice, Inbred C57BL; D008819:Mice, Nude; D018919:Neovascularization, Physiologic / Q000187:drug effects; D011509:Proteoglycans; D011994:Recombinant Proteins / Q000008:administration & dosage / Q000494:pharmacology
chemical_list: C491850:CCN1 protein, mouse; D017077:Culture Media, Conditioned; D055515:Cysteine-Rich Protein 61; D004338:Drug Combinations; D007797:Laminin; D011509:Proteoglycans; D011994:Recombinant Proteins; C059485:matrigel; D003094:Collagen