Comprehensive analysis of human chorionic membrane extracts regulating mesenchymal stem cells during osteogenesis.
2021
OBJECTIVE Human chorionic membrane extracts (CMEs) from placenta are known to be a natural biomaterial for bone regeneration, with their excellent osteogenic efficacy on osteoblasts. However, little is known about the regulatory mechanism involved. METHODS AND RESULTS We have shown the in vitro and in vivo bone-forming ability of CME using human osteoblasts and bone defect animal models, suggesting that CME greatly enhances osteogenesis by providing an osteoconductive environment for the osteogenesis of osteoblasts. Proteomic analysis revealed that CME contained several osteogenesis-related stimulators such as osteopontin, osteomodulin, Thy-1, netrin 4, retinol-binding protein and DJ-1. Additionally, 23 growth factors/growth factor-related proteins were found in CME, which may trigger mitogen-activated protein kinase (MAPK) signalling as a specific cellular signalling pathway for osteogenic differentiation. Microarray analysis showed four interaction networks (chemokine, Wnt signalling, angiogenesis and ossification), indicating the possibility that CME can promote osteogenic differentiation through a non-canonical Wnt-mediated CXCL signalling-dependent pathway. CONCLUSIONS The results of this study showed the function and mechanism of action of CME during the osteogenesis of osteoblasts and highlighted a novel strategy for the use of CME as a biocompatible therapeutic material for bone regeneration.
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