Berberine promotes proliferation of sodium nitroprusside-stimulated rat chondrocytes and osteoarthritic rat cartilage via Wnt/β-catenin pathway

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• 作者：Yan Zhou^a ; ^b ; ^c ; Haiying Tao^a ; ^c ; Yaming Li^a ; ^c ; Ming Deng^a ; ^c ; Bin He^a ; Shaoqiang Xia^b ; ^c ; Chun Zhang^b ; ^c ; Shiqing Liu^a ; ^b ; ^{liusqrm@163.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Berberine chloride (PubChem CID ; 12456)
• 刊名：European Journal of Pharmacology
• 出版年：2016
• 出版时间：15 October 2016
• 年：2016
• 卷：789
• 期：Complete
• 页码：109-118
• 全文大小：7233 K

文摘

Berberine chloride (BBR) is an isoquinoline derivative alkaloid isolated from medicinal herbs, including Coptis chinensis and Berberis aristate. This compound plays significant roles in the treatment of osteoarthritis (OA). The purpose of this study was to investigate the effects of BBR on the proliferation of sodium nitroprusside (SNP)-stimulated chondrocytes in vitro, the articular cartilage in a rat OA model, as well as to discuss the molecular mechanisms underlying these effects. In vitro, we demonstrated that BBR led to cell proliferation, increased the cell population in S-phase and decreased that in G0/G1-phase; moreover, the F-actin remodeling in SNP-stimulated chondrocytes were prevented. In addition, BBR markedly up-regulated β-catenin, c-Myc, and cyclin D1 expression of genes and proteins, and down-regulated glycogen synthase kinase-3β (GSK-3β) and matrix metalloproteinase-7 (MMP-7) expression. Notably, inhibition of the Wnt/β-catenin pathway by XAV939 partially blocked these effects. The in vivo results suggested that BBR promoted β-catenin protein level and enhanced proliferating cell nuclear antigen (PCNA) expression in osteoarthritic rat cartilage. In conclusion, these findings indicate that BBR promotes SNP-stimulated chondrocyte proliferation by promoting G1/S phase transition and synthesis of PCNA in cartilage through activation of Wnt/β-catenin signaling pathway.