上海口腔医学 ›› 2020, Vol. 29 ›› Issue (1): 7-12.doi: 10.19439/j.sjos.2020.01.002

• 论著 • 上一篇    下一篇

重组人结缔组织生长因子对牙髓细胞增殖与成牙本质分化的影响

曹颖, 彭伟伟, 王璇, 伍甜甜, 杜嵘*, 朱亚琴*   

  1. 上海交通大学医学院附属第九人民医院·口腔医学院 口腔综合科,国家口腔疾病临床医学研究中心, 上海市口腔医学重点实验室,上海市口腔医学研究所,上海 200011
  • 收稿日期:2018-12-20 出版日期:2020-02-25 发布日期:2020-03-09
  • 通讯作者: 朱亚琴,E-mail:zyq1590@163.com;杜嵘,E-mail:summerdr@163.com。*共同通信作者
  • 作者简介:曹颖(1993-),女,硕士研究生,E-mail:caoy_0425@126.com
  • 基金资助:
    国家自然科学基金(81271134、81700949)

Effect of recombinant connective tissue growth factor on proliferation and odontogenic differentiation of dental pulp cells

CAO Ying, PENG Wei-wei, WANG Xuan, WU Tian-tian, DU Rong, ZHU Ya-qin   

  1. Department of General Dentistry, Shanghai Ninth People's Hospital,College of Stomatology, Shanghai Jiao Tong University School of Medicine; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology. Shanghai 200011, China
  • Received:2018-12-20 Online:2020-02-25 Published:2020-03-09

摘要: 目的:研究重组人结缔组织生长因子(recombinant connective tissue growth factor, rCTGF)对牙髓细胞(human dental pulp cells,hDPCs)增殖及分化的影响。方法:利用不同浓度(0、1、10、100 ng/mL)rCTGF分别处理牙髓细胞,CCK8法检测牙髓细胞增殖情况;茜素红染色和半定量试验检测细胞矿化结节的形成变化,qRT-PCR测定成牙本质分化相关基因DMP-1、DSPP和OC的表达情况,Western 免疫印迹法测定rCTGF刺激牙髓细胞后,ERK1/2信号通路的磷酸化水平。采用SAS 9.3软件包对数据进行统计学分析。结果:高浓度的rCTGF(100 ng/mL)可以促进牙髓细胞增殖;经矿化诱导后,10 ng/mL rCTGF促进牙髓细胞矿化结节形成的效果最好,钙盐沉积量最明显(P<0.05),成牙本质分化相关基因DMP-1、DSPP的表达显著上调(P<0.05)。Western 免疫印迹结果显示,10 ng/mL rCTGF刺激牙髓细胞后,p-ERK1/2蛋白的表达升高。结论:rCTGF可能通过激活ERK1/2信号通路,促进牙髓细胞的增殖与分化。

关键词: 重组人结缔组织生长因子, 牙髓细胞, 细胞增殖, 细胞分化, ERK1/2信号通路

Abstract: PURPOSE: To analyze the effect of recombinant connective tissue growth factor(rCTGF) on proliferation and differentiation of human dental pulp cells(hDPCs). METHODS: Human dental pulp cells were cultured in vitro and treated with rCTGF at different concentrations (0, 1, 10, 100 ng/mL). The proliferation of dental pulp cells was detected by CCK8 assay. The formation of mineralized nodules was determined by alizarin red staining and half-quantitative alizarin Red S assay. qRT-PCR was utilized to detect the expression of odontogenic differentiation related genes DMP-1, DSPP and OC, and the phosphorylation level of ERK1/2 signaling pathway was detected by Western blot. The data were analyzed with SAS 9.3 software package. RESULTS: High concentration of rCTGF(100 ng/mL) could promote proliferation of dental pulp cells. After mineralization induction, 10 g/mL rCTGF had the best effect on promoting the formation of mineralized nodules in dental pulp cells, and calcium ion deposition was the most obvious(P<; 0.05). The expression of odontogenic differentiation related genes DMP-1 and DSPP was significantly up-regulated(P<; 0.05). Western blot results showed that hDPCs stimulated by 10 ng/mL rCTGF could increase the expression of p-ERK1/2. CONCLUSIONS: rCTGF may promote the proliferation and differentiation of human dental pulp cells through activating ERK1/2 signaling pathway.

Key words: Recombinant connective tissue growth factor, Human dental pulp cells, Cell proliferation, Cell differentiation, ERK1/2 signaling pathway

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