title: Recombinant growth/differentiation factor-5 stimulates osteogenic differentiation of fat-derived stromal cells in vitro.
abstract: Fat-derived stromal cells can differentiate into various skeletal tissues. Currently the mechanism that determines whether stromal cells differentiate into osteoblasts is unclear and the role of growth/differentiation factor (GDF)-5 in differentiation of fat-derived stromal cells is not fully understood. It appears that the differentiation of stromal cells is greatly enhanced by GDF-5 that plays a role in a variety of musculoskeletal processes such as joint formation, tendon maintenance, and bone formation. Our study showed that GDF-5 promotes the differentiation of rat fat-derived stromal cells into osteogenic lineages in vitro. Furthermore, these findings were confirmed by histology, biochemical assay for alkaline phosphatase activity, and analysis of gene expression. The ability to preferentially stimulate fat-derived stromal cells down the osteogenic pathway holds significance in a variety of clinical scenarios.
authors.affiliation: Department of Orthopaedic Surgery, University of Virginia School of Medicine, Charlottesville, VA 22908, USA.
authors.forename: Qing
authors.initials: Q
authors.lastname: Zeng
authors.forename: Xudong
authors.initials: X
authors.lastname: Li
authors.forename: Luke
authors.initials: L
authors.lastname: Choi
authors.forename: Gina
authors.initials: G
authors.lastname: Beck
authors.forename: Gary
authors.initials: G
authors.lastname: Balian
authors.forename: Francis H
authors.initials: FH
authors.lastname: Shen
mesh_terms: D000273:Adipose Tissue / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D000469:Alkaline Phosphatase / Q000235:genetics; D000818:Animals; D019485:Bone Morphogenetic Proteins / Q000235:genetics / Q000378:metabolism* / Q000494:pharmacology; D002454:Cell Differentiation / Q000187:drug effects / Q000502:physiology*; D019070:Cell Lineage / Q000187:drug effects / Q000502:physiology; D002478:Cells, Cultured; D050659:Core Binding Factor Alpha 1 Subunit / Q000235:genetics; D004305:Dose-Response Relationship, Drug; D005786:Gene Expression Regulation / Q000187:drug effects / Q000235:genetics; D005819:Genetic Markers / Q000187:drug effects / Q000235:genetics; D055428:Growth Differentiation Factor 5; D010006:Osteoblasts / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D015675:Osteocalcin / Q000235:genetics; D010012:Osteogenesis / Q000187:drug effects / Q000502:physiology*; D012333:RNA, Messenger / Q000187:drug effects / Q000378:metabolism; D051381:Rats; D011916:Rats, Inbred F344; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism / Q000494:pharmacology; D013234:Stem Cells / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D017154:Stromal Cells / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*
chemical_list: D019485:Bone Morphogenetic Proteins; D050659:Core Binding Factor Alpha 1 Subunit; D005819:Genetic Markers; D055428:Growth Differentiation Factor 5; D012333:RNA, Messenger; D011993:Recombinant Fusion Proteins; D015675:Osteocalcin; D000469:Alkaline Phosphatase