Chinese Journal of Tissue Engineering Research ›› 2019, Vol. 23 ›› Issue (11): 1647-1651.doi: 10.3969/j.issn.2095-4344.1101

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Effect of paclitaxel on proliferation and differentiation of osteoclasts in periapical periodontitis 

Wu Hui1, Jiang Long2, Li Xiaojie3, Ji Qiushi2, Xu Nuo2   

  1.  (1Department of Stomatology, the First Affiliated Hospital of Hainan Medical University, Haikou 570102, Hainan Province, China; 2Zhongshan College of Dalian Medical University, Dalian 116000, Liaoning Province, China; 3Stomatology College of Dalian Medical University, Dalian 116044, Liaoning Province, China)
  • Received:2018-11-05 Online:2019-04-18 Published:2019-04-18
  • Contact: Xu Nuo, Master, Lecturer, Zhongshan College of Dalian Medical University, Dalian 116000, Liaoning Province, China
  • About author:Wu Hui, Master, Attending physician, Department of Stomatology, the First Affiliated Hospital of Hainan Medical University, Haikou 570102, Hainan Province, China
  • Supported by:

    the Scientific and Technological Program of Liaoning Province (General Program), No. 201600752 (to LXJ)

Abstract:

BACKGROUND: Paclitaxel has been shown to treat bone metastases, suggesting that it has certain effect on osteolysis diseases. However, there are few studies on paclitaxel for osteolysis diseases, and the mechanism of paclitaxel regulating osteoclast formation and function remains unclear.
OBJECTIVE: To investigate the effect of paclitaxel on the proliferation and differentiation of osteoclasts in periapical periodontitis.
METHODS: RAW264.7 cells were cultured in vitro for 24 hours and RANKL was added to identify osteoclasts by real-time PCR and tartrate-resistant acid phosphatase. Different concentrations (1, 10-1, 10-2, 10-3, 10-4, 10-5, 10-6 mol/L) of paclitaxel were used to treat osteoclasts, and the optimal concentration of osteoclasts was selected by cell counting kit-8 assay. The osteoclasts without paclitaxel were used as controls. The effect of paclitaxel on osteoclast apoptosis was detected by real-time PCR and western blot assay.
RESULTS AND CONCLUSION: The osteoclasts induced by 10-4 mol/L paclitaxel showed the weakest proliferation ability (P < 0.05), suggesting that 10-4 mol/L was the optimal concentration. After cultured by 10-4 mol/L paclitaxel for 0, 24 and 48 hours, the proliferation of osteoclasts was significantly lower than that in the control group (P < 0.05). The absorbance value of tartrate-resistant acid phosphatase of the osteoclasts cultured by 10-4 mol/L paclitaxel was significantly lower than that in the control group (P < 0.05). Real-time PCR results revealed that mRNA expression level of tartrate-resistant acid phosphatase of the osteoclasts cultured by 10-4 mol/L paclitaxel was significantly lower than that in the control group (P < 0.05). The protein expression levels of Caspase3 and PARP1 of the osteoclasts cultured by 10-4 mol/L paclitaxel were significantly higher than those in the control group. In summary, paclitaxel can inhibit the proliferation and differentiation of osteoclasts, and activate apoptosis of osteoclasts.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Periapical Periodontitis, Osteoclasts, Taxoids, Tissue Engineering

CLC Number: