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作 者:李伟豪[1] 董加洪[2] 许艳华[3] 邓婕[3] 李松[1]
机构地区:[1]昆明医科大学,昆明650500 [2]丽水市中心医院口腔科,浙江丽水323000 [3]昆明医科大学口腔医学院附属口腔医院正畸科,昆明650101
出 处:《临床与病理杂志》2017年第1期143-149,共7页Journal of Clinical and Pathological Research
基 金:国家自然科学基金(81360163);浙江省医药卫生科技项目(2016KYB338);云南省科技厅–昆明医学院联合专项(2013FZ279)~~
摘 要:目的:研究骨形成蛋白2(bone morphogenetic proteins 2,BMP-2)对SD乳鼠下颌骨髁突软骨细胞(mandibular condylar chondrocytes,MCCs)黏附和增殖作用并探索BMP-2的最佳实验浓度。方法:在低血清浓度(含2.5%胎牛血清培养基)培养条件下,分为4组(n=3):对照组(未添加B M P-2)、BMP40组(添加40 ng/m L的BMP-2)、BMP100组(添加100 ng/m L的BMP-2)、BMP200组(添加2 0 0 ng/m L的B M P-2)。通过甲基噻唑基四唑(m e t hy l t h i azo l y l te t razo l i u m,M T T)比色法测量8 h,12 h,1 d,3 d,5 d,7 d活细胞数并描绘生长曲线。结果:在1 d时BMP100组MTT吸光度(0.497±0.010)较对照组(0.345±0.024)、BMP40组(0.475±0.007)及BMP200组(0.471±0.013)均高,差异具有统计学意义(P<0.05)。细胞数未呈指数增长。结论:低血清浓度下,BMP-2用于M CCs的最佳实验浓度为1 0 0 ng/m L,可促进M CCs的初期黏附但增殖作用并不明显。Objective: To investigate the effect of bone morphogenetic proteins 2(BMP-2) on adhesion and growth of mandibular condylar chondrocytes(MCCs) in SD rats, and explore the optimum concentration of BMP-2. Methods: The MCCs were identified and cultured in low fetal bovine serum(2.5% FBS); The cells were divided into four groups(n=3): a control group(without BMP-2), a BMP40 group(induced with 40 ng/m L BMP-2), a BMP100(induced with 100 ng/m L BMP-2), a BMP200(induced with 200 ng/m L BMP-2). Methyl thiazolyl tetrazolium(MTT) method was used to evaluate cell proliferation ability at 8 h, 12 h, 1 d, 3 d, 5 d, 7 d. Results: The absorbance detected by MTT assay showed that BMP100(0.497±0.010) was significantly higher than that in control group(0.345±0.024), BMP40 group(0.475±0.007) and BMP200 group(0.471±0.013) at 1 d, the difference was statistically significant(P〈0.05). However, the growth curve did not increase geometrically. Conclusion: The optimum concentration of BMP-2 is 100 ng/m L. BMP-2 can effectively promote the initial adhesion of MCCs, but the proliferation effect did not show significantly difference.
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