IGF-1对小鼠牙囊细胞生物学特性的影响  

Effects of IGF-1 on the biological characteristics of mouse dental follicle cells

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作  者:葛少华[1] 杨丕山[1] 李纾[1] 赵宁[1] 

机构地区:[1]济南山东大学口腔医院牙周科,250012

出  处:《实用口腔医学杂志》2006年第1期41-44,共4页Journal of Practical Stomatology

基  金:国家自然科学基金资助项目(30371537);山东省优秀中青年科学家奖励基金资助项目(02BS096)

摘  要:目的:探讨胰岛素样生长因子-1(IGF-1)对小鼠牙囊细胞增殖、蛋白含量及分化能力影响。方法:将第3代小鼠牙囊细胞与不同浓度IGF-1(0.005、0.01、0.05、0.1、0.5mg/L)共孵育后,测定IGF-1对细胞增殖、碱性磷酸酶活性、总蛋白含量的影响;并用VonKossa法检测0.05和0.1mg/L的IGF-1对牙囊细胞矿化结节形成能力的影响。结果:在0.05~0.1mg/L的浓度范围内,IGF.1能显著促进牙囊细胞的增殖,使ALP活性及总蛋白含量增加(P〈0.01),但三者的最佳效应浓度有所差异,当浓度升高至0.5mg/L时,促进效应下降,与对照组无显著性差异(P〉0.05);0.05和0.1mg/L的IGF-1均能显著促进牙囊细胞矿化结节的形成(P〈0.05,与对照组相比)。结论:合适浓度的IGF-1能促进牙囊细胞的增殖,增加蛋白含量及向成骨细胞(成牙骨质细胞)方向分化的能力。Objective:To study the effects of IGF-1 on the proliferation, total protein amount and cytodifferentiation of mouse dental follicle cells. Methods : The dental follicle cells of passage 3 were incubated with different concentrations(0. 005, 0. 01,0.05,0.1 and 0. 5 mg/L) of IGF-1 respectively, cell proliferation, alkaline phosphatase ( ALP), total protein amount were measured by MTY assay and spectrophotometer respectively. Effects of O. 05 and O. I mg/L IGF-1 on mineralization potential were studied by Von Kossa staining. Results:IGF-1 (ml/L) at 0. 005-0.1 increased the proliferation and total protein amount(P 〈 0. 05 or P 〈 0. 01 ), at 0. 01 -0. 1 increased ALP expression( P 〈 0. 01 ), at 0. 05 and 0. 1 increased the mineral noclule formation ( P 〈 0. 05 ) of the cells. Conclusion:Proper concentrations of IGF-1 may promote dental follicle cell proliferation, protein synthesis and differentiation towards osteoblasts(cementoblasts).

关 键 词:牙囊细胞 细胞分化 胰岛素样生长因子-1 生物学特性 

分 类 号:R780.2[医药卫生—口腔医学]

 

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