title: IGF-1 and BMP-2 induces differentiation of adipose-derived mesenchymal stem cells into chondrocytes-like cells.
abstract: Articular cartilage defects are common, causing significant morbidities. Tissue engineering using pluripotent stem cells is a new promising modality for cartilage repair. In the current study, we investigated the chondrogenesis of rabbit adipose-derived stem cells (ADSCs). We isolated rabbit ADSCs and transfected these cells with constructs encoding human insulin growth like factor 1 (IGF-1) and bone morphogenic protein 2 (BMP-2). We examined the growth and morphology of these transfected cells and their production of type II collagen and MMP-3. We found that IGF-1 and BMP-2 drove the chondrogenesis of ADSCs, which showed mature chondrocyte-like cells and formed cartilage nodules. These cells also produced type II collagen with a reduced production of MMP-3. Our findings suggested that human ADSCs could differentiate into chondrocyte-like cells driven by IGF-1 and BMP-2 and held promises as an abundant and ready source of stem cells for cartilage repair and regeneration.
authors.affiliation: Department of Orthopedics, Shengjing Hospital, China Medical University, 36 San Hao Street, Shenyang, Liaoning 110004, China. anch1965@yahoo.cn
authors.forename: Chunhou
authors.initials: C
authors.lastname: An
authors.forename: Yang
authors.initials: Y
authors.lastname: Cheng
authors.forename: Quan
authors.initials: Q
authors.lastname: Yuan
authors.forename: Jianjun
authors.initials: J
authors.lastname: Li
mesh_terms: D017667:Adipocytes / Q000166:cytology / Q000187:drug effects; D000818:Animals; D055396:Bone Morphogenetic Protein 2 / Q000378:metabolism*; D002454:Cell Differentiation / Q000187:drug effects; D002478:Cells, Cultured; D019902:Chondrocytes / Q000166:cytology* / Q000187:drug effects*; D006801:Humans; D007334:Insulin-Like Growth Factor I / Q000378:metabolism*; D059630:Mesenchymal Stem Cells / Q000166:cytology* / Q000187:drug effects*; D011817:Rabbits; D023822:Tissue Engineering / Q000379:methods*
chemical_list: C525718:BMP2 protein, human; D055396:Bone Morphogenetic Protein 2; D007334:Insulin-Like Growth Factor I