期刊
ADVANCED NANOBIOMED RESEARCH
卷 2, 期 9, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anbr.202200018
关键词
bone marrow mesenchymal stem cells; calcium-sensing receptors; osteogenesis; osteoporosis; Sr-doped hydroxyapatite
资金
- National Natural Science Foundation of China [42 176 096, 42 176 097]
- Natural Science Foundation of Shandong Province [ZR202103010879, ZR2021MH065]
- Science and Technology Project of Qingdao West Coast New Area [2019-60]
- Traditional Chinese Medicine Scientific Research Project of Qingdao [2020-zyy060]
- Qingdao Outstanding Health Professional Development Fund
- Qilu Health Leading Talent Project
This study investigates the mechanisms of promoting osteogenic ability of BMSCs through Sr-HA microspheres, demonstrating that Sr-HA significantly enhances osteogenic differentiation and this effect is realized through the CaSR-JAK2/STAT3 signaling pathway.
Self-repair of critical bone defects from periodontitis, tumor resection, and trauma is difficult. Osteoporosis is an abnormal bone metabolism disease characterized by increased bone resorption, decreased bone formation, and decreased activity of bone marrow mesenchymal stem cells (BMSCs), which further inhibits the repair of bone defects. Improving the osteogenic ability of BMSCs after osteoporosis is an important step in treating osteoporotic bone defects. Hydroxyapatite (HA) with good biocompatibility is widely used in bone material research. HA and strontium-doped hydroxyapatite (Sr-HA) microspheres are synthesized following a hydrothermal method, and the characteristics and the ability of these microspheres are explored to promote osteogenesis. Further, the role of the calcium-sensing receptor (CaSR) and Janus kinase 2 gene/signal transducers and activators of transcription 3 (JAK2/STAT3) signaling pathway in this process are investigated. The results show that Sr-HA, rather than HA alone, significantly promote the osteogenic differentiation of BMSCs in vitro and bone formation in vivo. Further, the effect of promoting osteogenic differentiation is realized by activating the CaSR-JAK2/STAT3 signaling pathway. Therefore, the study demonstrates that Sr-HA is the better choice for restoring critical bone defects.
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