Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery · 2016
[RESEARCH PROGRESS OF Hedgehog SIGNALING PATHWAY IN REGULATING BONE FORMATION AND OSTEOGENIC DIFFERENTIATION OF BONE MESENCHYMAL STEM CELLS].
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Chi Bojing, Liu Guangyuan, Xing Lei, Tian Faming
Аннотация
OBJECTIVE: To summarize the research progress of the effects and mechanisms of Hedgehog signaling pathway in regulating bone formation and osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs).
METHODS: The related literature concerning the regulations and mechanism of Hedgehog signaling pathway in osteogenic differentiation of BMSCs and bone formation in vivo, in vitro, and ex vivo studies in recent years was analyzed and summarized.
RESULTS: The in vitro studies indicate that Hedgehog signaling pathway can promote osteogenic differentiation of BMSCs via activation of key molecules Smoothened (Smo) and Gli1 which are downstream of Hedgehog signaling, and Hedgehog signaling can activate mTORC2-Akt signaling by upregulation of insulin-like growth factor which has similar effects. Hedgehog signaling regulates osteoblast differentiation via activation of Hh-Smo-Ptch1-Gli signaling pathway and inhibition of Hh-Gαi-RhoA stress fibre signaling. Hedgehog signaling can regulate key molecules of osteogenesis Runx2 for promoting osteogenic differentiation and matrix mineralization by synergism of bone morphogenetic protein and Wnt signaling, and promotes bone formation and repair and healing for bone defect and bone graft model in vivo.
CONCLUSIONS: Hedgehog signaling can regulate bone formation and osteogenic differentiation of BMSCs via activation of Hedgehog signaling and other signaling pathways. Hedgehog signaling pathway may be a potential target for developing treatment for bone related diseases of osteoporosis and fracture healing disorders.
METHODS: The related literature concerning the regulations and mechanism of Hedgehog signaling pathway in osteogenic differentiation of BMSCs and bone formation in vivo, in vitro, and ex vivo studies in recent years was analyzed and summarized.
RESULTS: The in vitro studies indicate that Hedgehog signaling pathway can promote osteogenic differentiation of BMSCs via activation of key molecules Smoothened (Smo) and Gli1 which are downstream of Hedgehog signaling, and Hedgehog signaling can activate mTORC2-Akt signaling by upregulation of insulin-like growth factor which has similar effects. Hedgehog signaling regulates osteoblast differentiation via activation of Hh-Smo-Ptch1-Gli signaling pathway and inhibition of Hh-Gαi-RhoA stress fibre signaling. Hedgehog signaling can regulate key molecules of osteogenesis Runx2 for promoting osteogenic differentiation and matrix mineralization by synergism of bone morphogenetic protein and Wnt signaling, and promotes bone formation and repair and healing for bone defect and bone graft model in vivo.
CONCLUSIONS: Hedgehog signaling can regulate bone formation and osteogenic differentiation of BMSCs via activation of Hedgehog signaling and other signaling pathways. Hedgehog signaling pathway may be a potential target for developing treatment for bone related diseases of osteoporosis and fracture healing disorders.