title: Chondrogenic differentiation of mouse bone marrow mesenchymal stem cells induced by cartilage-derived morphogenetic protein-2 in vitro.
abstract: To study the cartilage differentiation of mouse mesenchymal stem cells (MSCs) induced by cartilage-derived morphogenetic proteins-2 in vitro, the MSCs were isolated from mouse bone marrow and cultured in vitro. The cells in passage 3 were induced into chondrogenic differentiation with different concentrations of recombinant human cartilage-derived morphogenetic proteins-2 (0, 10, 20, 50 and 100 ng/mL). After 14 days of induction, morphology of cells was observed under phase-contrast microscope. Collagen II mRNA and protein were examined with RT-PCR, Western blotting and immunocytochemistry respectively and the sulfate glycosaminoglycan was measured by Alcian blue staining. RT-PCR showed that CDMP-2 could promote expression of collagen II mRNA in an dose-dependant manner, especially at the concentration of 50 ng/mL and 100 ng/mL. Immunocytochemistry and Western blotting revealed a similar change. Alcian blue staining exhibited deposition of typical cartilage extracellular matrix. Our results suggest that mouse bone marrow mesenchymal stem cells can differentiate into chondrogenic phonotype with the induction of CDMP-2 in vitro, which provides a basis for further research on the role of CDMP-2 in chondrogenesis.
authors.affiliation: Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. lenqin@mails.tjmu.edu.cn
authors.forename: Hongtao
authors.initials: H
authors.lastname: Tian
authors.forename: Shuhua
authors.initials: S
authors.lastname: Yang
authors.forename: Liang
authors.initials: L
authors.lastname: Xu
authors.forename: Yukun
authors.initials: Y
authors.lastname: Zhang
authors.forename: Weihua
authors.initials: W
authors.lastname: Xu
mesh_terms: D000818:Animals; D001854:Bone Marrow Cells / Q000166:cytology*; D019485:Bone Morphogenetic Proteins / Q000494:pharmacology*; D002454:Cell Differentiation / Q000187:drug effects*; D002478:Cells, Cultured; D019902:Chondrocytes / Q000166:cytology*; D020219:Chondrogenesis / Q000187:drug effects / Q000502:physiology; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000166:cytology*; D051379:Mice; D011994:Recombinant Proteins / Q000494:pharmacology