PDGFR in PDGF-BB/PDGFR Signaling Pathway Does Orchestrates Osteogenesis in a Temporal Manner

Platelet-derived growth factor-BB (PDGF-BB)/platelet-derived growth factor receptor-β (PDGFR-β) pathway is conventionally considered as an important pathway to promote osteogenesis; however, recent study suggested its role during osteogenesis to be controversial. Regarding the differential functions...

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Veröffentlicht in:Research (Washington) 2023, Vol.6, p.0086-0086
Hauptverfasser: Wang, Fangqian, Ye, Yuxiao, Zhang, Zengjie, Teng, Wangsiyuan, Sun, Hangxiang, Chai, Xupeng, Zhou, Xingzhi, Chen, Jiayu, Mou, Haochen, Eloy, Yinwang, Jin, Xiaoqiang, Chen, Liang, Shao, Zhenxuan, Wu, Yan, Shen, Yue, Liu, An, Lin, Peng, Wang, Jianwei, Yu, Xiaohua, Ye, Zhaoming
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Sprache:eng
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Zusammenfassung:Platelet-derived growth factor-BB (PDGF-BB)/platelet-derived growth factor receptor-β (PDGFR-β) pathway is conventionally considered as an important pathway to promote osteogenesis; however, recent study suggested its role during osteogenesis to be controversial. Regarding the differential functions of this pathway during 3 stages of bone healing, we hypothesized that temporal inhibition of PDGF-BB/PDGFR-β pathway could shift the proliferation/differentiation balance of skeletal stem and progenitor cells, toward osteogenic lineage, which leads to improved bone regeneration. We first validated that inhibition of PDGFR-β at late stage of osteogenic induction effectively enhanced differentiation toward osteoblasts. This effect was also replicated in vivo by showing accelerated bone formation when block PDGFR-β pathway at late stage of critical bone defect healing mediated using biomaterials. Further, we found that such PDGFR-β inhibitor-initiated bone healing was also effective in the absence of scaffold implantation when administrated intraperitoneally. Mechanistically, timely inhibition of PDGFR-β blocked extracellular regulated protein kinase 1/2 pathway, which shift proliferation/differentiation balance of skeletal stem and progenitor cell to osteogenic lineage by upregulating osteogenesis-related products of Smad to induce osteogenesis. This study offered updated understanding of the use of PDGFR-β pathway and provides new insight routes of action and novel therapeutic methods in the field of bone repair.
ISSN:2639-5274
2639-5274
DOI:10.34133/research.0086