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Psoralen Accelerates Bone Fracture Healing by Activating Both Osteoclasts and Osteoblasts

Psoralen Accelerates Bone Fracture Healing by Activating Both Osteoclasts and Osteoblasts

Tan Zhang, Weiqi Han, Kangxian Zhao, Wanlei Yang, Xuanyuan Lu, Yewei Jia, An Qin, Yu Qian

FASEB J. 2019 Apr;33(4):5399-5410.

PMID: 30702934

Abstract:

Bone fracture healing is a complex, dynamic process that involves various cell types, with osteoclasts and osteoblasts playing indispensable roles. In this study, we found that psoralen, the main active ingredient in Psoralea corylifolia L. fruit extract, enhanced bone fracture healing through activation of osteoclast and osteoblast activity via the ERK signaling pathway. In detail, psoralen promoted receptor activator of nuclear factor-κB ligand-induced osteoclastogenesis, mRNA expression of osteoclast-specific genes, and osteoclastic bone resorption in primary bone marrow-derived macrophages. Meanwhile, psoralen induced osteogenic differentiation by promoting the mRNA expression of the osteoblast differentiation markers alkaline phosphatase, runt-related transcription factor 2, osterix, and osteocalcin. At the molecular level, psoralen preferentially activated ERK1/2 but not JNK or p38 MAPKs. Further experiments revealed that psoralen-induced osteoclast and osteoblast differentiation was abrogated by a specific inhibitor of phosphorylated ERK. In addition, psoralen accelerated bone fracture healing in a rat tibial fracture model, and the numbers of osteoclasts and osteoblasts were increased in psoralen-treated fracture callus. Taken together, our findings indicate that psoralen accelerates bone fracture healing through activation of osteoclasts and osteoblasts via ERK signaling and has potential as a novel drug in the orthopedic clinic for the treatment of bone fractures.-Zhang, T., Han, W., Zhao, K., Yang, W., Lu, X., Jia, Y., Qin, A., Qian, Y. Psoralen accelerates bone fracture healing by activating both osteoclasts and osteoblasts.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP66977	Psoralen		66-97-7	Price

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