口腔医学研究 ›› 2019, Vol. 35 ›› Issue (4): 372-376.DOI: 10.13701/j.cnki.kqyxyj.2019.04.016

• 口腔颌面外科学研究 • 上一篇    下一篇

周期性压应力诱导髁突软骨细胞分泌促破骨因子的研究

阮国宪*, 高丽卿, 邓立   

  1. 汉中市口腔医院修复科 陕西 汉中 723000
  • 收稿日期:2018-09-11 出版日期:2019-04-28 发布日期:2019-04-23
  • 通讯作者: 阮国宪,E-mail: 15029362225@163.com
  • 作者简介:阮国宪(1975~ ),男,浙江上虞人,本科,主治医师,主要从事颞下颌关节生物力学研究。
  • 基金资助:
    汉中市口腔医院创新项目(编号:2015031)

Effects of Periodic Compression on Expression of Pro-osteoclastic Factors by Mandibular Condylar Chondrocytes

RUAN Guo-xian*, GAO Li-qing, DENG Li   

  1. Department of Prosthodontics, Stomatology Hospital of Hanzhong, Hanzhong 723000, China
  • Received:2018-09-11 Online:2019-04-28 Published:2019-04-23

摘要: 目的: 研究周期性压应力对髁突软骨细胞促破骨因子表达的影响。方法: 分离原代大鼠髁突软骨细胞,并与琼脂糖培养基混合,采用Flexcell细胞加力系统对软骨细胞/琼脂糖混合物进行压应力加载,分别对细胞施加15、30及45 kPa周期性压应力(频率为0.5 Hz),加力时间分别为2、6及12 h。对照组采用相同处理方式,但不施加压应力。加力结束后收集细胞,采用实时定量聚合酶链反应 (real-time quantitative polymerase chain reaction,Real-time PCR)及Western blot检测软骨细胞促破骨因子表达情况。结果: 15 kPa压力刺激软骨细胞6 h即可促进软骨细胞核因子-κB(nuclear factor kappa-B, NF-κB)配体受体激活剂(the receptor activator of NF-κB ligand,RANKL)的表达(P<0.05),30及45 kPa压力刺激软骨细胞6及12 h可促进软骨细胞基质衍生因子1(stroma derived factor 1,SDF-1)、转化生长因子-β1(transforming growth factor-β1,TGF-β1)及RANKL的表达(P<0.05),但其单核细胞趋化蛋白-1(monocyte chemotactic protein-1,MCP-1)、巨噬细胞集落刺激因子(macrophage-colony stimulating factor,M-CSF)及骨保护素(osteoprotegerin,OPG)的表达则与对照组比较差异无统计学意义(P>0.05)。结论: 周期性压应力可促进软骨细胞表达SDF-1、TGF-β1及RNAKL等促破骨因子。

关键词: 颞下颌关节, 髁突软骨细胞, 压应力, 破骨细胞, 促破骨因子

Abstract: Objective: To investigate the effects of periodic compression on the expression of pro-osteoclastic factors by mandibular condylar chondrocytes (MCCs). Methods: The rat MCCs were isolated and mixed with agarose culture medium. The Flexcell system was used to conduct compression on the MCCs/agarose mixture. The intensities of compression were 15, 30, and 45 kPa (frequency 0.5 Hz), and the stimulating time were 2, 6, and 12 hours. The control group was treated in the same way but without compression. Cells were collected after the application of force and the expression of pro-osteoclastic factors by MCCs were detected. Results: When the MCCs were stimulated by 15 kPa compression for 6 hours, the expression of RANKL was significantly higher than those of the controls. When the MCCs were stimulated by 30 and 45 kPa compression for 6 and 12 hours, the expression of SDF-1, TGF-beta-1, and RANKL were higher than those of the controls, but the gene expression of MCP-1, M-CSF, and OPG were not different from those of the controls. Conclusion: Periodic compression could promote the expression of pro-osteoclastic factors such as SDF-1, TGF-beta 1, and RANKL.

Key words: Temporomandibular joint, Mandibular condylar chondrocytes, Compression, Osteoclast, Pro-osteoclastic factors