PDGF Modulates BMP2‐Induced Osteogenesis in Periosteal Progenitor Cells

JBMR Plus

Jungeun Yu¹  Archana Sanjay¹  Danka Grcevic²  Sanja Novak³  Ivo Kalajzic³  Xi Wang³  Brya G Matthews³ 

[1] Department of Orthopedic SurgeryUConn HealthFarmingtonCTUSA;Department of Physiology and ImmunologySchool of MedicineUniversity of ZagrebZagrebCroatia;Department of Reconstructive SciencesUConn HealthFarmingtonCTUSA;

关键词: PERIOSTEUM;    BONE MORPHOGENETIC PROTEIN 2;    PLATELET‐DERIVED GROWTH FACTOR;    STEM CELLS;    FRACTURE HEALING;   

DOI  :  10.1002/jbm4.10127

来源: DOAJ

【 摘 要 】

ABSTRACT BMPs are used in various clinical applications to promote bone formation. The limited success of the BMPs in clinical settings and supraphysiological doses required for their effects prompted us to evaluate the influence of other signaling molecules, specifically platelet‐derived growth factor (PDGF) on BMP2‐induced osteogenesis. Periosteal cells make a major contribution to fracture healing. We detected broad expression of PDGF receptor beta (PDGFRβ) within the intact periosteum and healing callus during fracture repair. In vitro, periosteum‐derived progenitor cells were highly responsive to PDGF as demonstrated by increased proliferation and decreased apoptosis. However, PDGF blocked BMP2‐induced osteogenesis by inhibiting the canonical BMP2/Smad pathway and downstream target gene expression. This effect is mediated via PDGFRβ and involves ERK1/2 MAPK and PI3K/AKT signaling pathways. Therapeutic targeting of the PDGFRβ pathway in periosteum‐mediated bone repair might have profound implications in the treatment of bone disease in the future. © 2018 The Authors JBMR Plus is published by Wiley Periodicals, Inc. on behalf of the American Society for Bone and Mineral Research.

【 授权许可】

Unknown