华西口腔医学杂志

• 基础研究 • 上一篇    下一篇

表皮生长因子受体在人牙周膜成纤维细胞体外矿化中的作用

李纾1杨丕山1曹金芳2葛少华1潘克清1   

  1. 1.山东大学口腔医院  牙周科,山东  济南 250012;2.温州医学院附属口腔医院  口腔内科,浙江 温州 325027
  • 收稿日期:2006-02-25 修回日期:2006-02-25 出版日期:2006-02-20 发布日期:2006-02-20
  • 通讯作者: 杨丕山,Tel: 0531-8382368
  • 作者简介:李 纾(1964-),男,山东人,副教授,博士
  • 基金资助:

    山东省中青年科学家奖励基金资助项目(02BS096)

Expression of Epidermal Growth Factor Receptor in Human Periodontal Ligament Cells during Their Mineralization in vitro

 LI Shu1,YANG Pi-shan1, CAO Jin-fang2, GE Shao-hua1, PAN Ke-qing1   

  1. 1. Dept. of Periodontology, School of Stomatology, Shandong University,Jinan 250012, China; 2. Dept. of Periodontology, Faculty & Hospital of Stomatology, Wenzhou Medical College, Wenzhou 325027, China
  • Received:2006-02-25 Revised:2006-02-25 Online:2006-02-20 Published:2006-02-20

摘要:

 目的  探讨表皮生长因子受体(EGFR)在人牙周膜成纤维细胞(hPDLC)体外矿化中的作用。方法  体外培养hPDLC,运用免疫细胞化学技术,对hPDLC体外矿化前后EGFR的表达进行比较研究;应用原位杂交及RT-PCR技术,对矿化前后的hPDLC mRNA进行检测。结果  诱导前EGFR呈高表达,随着地塞米松诱导时间的延长,其表达逐渐下降,在矿化结节形成后的第4周,几乎呈阴性表达,与成骨细胞中EGFR的表达一致。原位杂交中杂交信号与免疫细胞化学的检测结果基本一致,RT-PCR的mRNA半定量检测发现,随着hPDLC的体外矿化,碱性磷酸酶升高,EGFR表达降低。结论  EGFR在hPDLC的矿化过程中起着负调控作用,与牙周膜自身结构的稳定性有关。

关键词: 表皮生长因子受体, 牙周膜成纤维细胞, 矿化, 细胞培养

Abstract:

Objective To investigate the expression of epidermal growth factor receptor(EGFR) during the mineralization of human periodontal ligament cells(hPDLC)in vitro. Methods Studies using specific antibodies to immunolocalize EGFR in the mineral differentiating hPDLC were undertaken to investigate the different expression during the inducing process. In situ hybridization and RT-PCR technique were used to investigate the transcripts encoding the protein of EGFR. Results The results showed that immunocytochemical labeling gradually decreased following the elong of the induce time, downing to nearly negative at the 4th week and the signal of EGFR transcripts was weaker in the induced hPDLC than that in uninduced. Conclusion EGFR has a negative regulation function during the mineralization of hPDLC.

Key words: epidermalgrowthfactorreceptor, periodontalligamentcells, mineralization, cellculture