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Effect of recombinant human bone morphogenetic protein-2 on the expression of osteopontin in human periodontal ligament cells
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNA OF STOMTAOLOGY
- Issue:
- 5
- DOI:
- 10.3760/j.issn:1002-0098.2000.05.003
- Key Word:
- 骨形成蛋白;牙周膜细胞;骨桥蛋白
Abstract： 目的 深入了解牙周膜细胞(periodontal ligament cells,PDLC)的成骨样细胞特性,以及非胶原蛋白在牙周组织矿化中的作用.方法 在体外培养条件下,观察重组人骨形成蛋白2(recombinant human bone morphogenetic protein-2,rhBMP-2)作用前后是否对矿化相关蛋白之一的骨桥蛋白(osteopontin,OPN)在人PDLC中的存在及表达情况产生影响.在小玻片上培养第5代PDLC,分为加rhBMP-2(50 μg/L)刺激的实验组和不加任何因子的空白对照组,以地高辛标记的OPN cDNA探针,采用原位杂交技术对PDLC中OPN的表达情况进行检测;同时做PBS替代探针和RNA酶预处理的方法学对照.结果 对照组、替代对照和RNA酶预处理的PDLC均显示为阴性反应, 没有显示出OPN的阳性表达信号;实验组PDLC的胞浆中可见明显的OPN阳性反应,表达信号较强.结论 rhBMP-2的刺激作用可使PDLC表达出较强的OPN阳性信号;表明在一定条件和外界因子的诱导下,PDLC具有向成骨特性方向转变的潜能,对牙周组织再生有促进效应.
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