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卡介苗经TLR4介导对膀胱癌细胞株T739 NF-κB p65活性影响 被引量:2

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摘要 目的:探讨卡介苗(BCG)对膀胱癌细胞株T739经Toll样受体介导的NF-κB p65活性影响。方法:采用SYBRGreen嵌合荧光定量Real Time-PCR,观察BCG(0.25g/L)刺激T739后不同时间点各个mRNA相对表达量(Ratio),设LPS和空白组作对照;采用转录因子结合DNA的ELISA方法检测NF-κB p65活性。结果:BCG刺激后T739细胞TLR2、CD14和MD-2mRNA表达均明显增加,Max.Ratio分别为5.3(2h),2.6(4h),7.4(2h),TLR4mRNA增加不显著,Max.Ratio为1.6(6h);BCG作用T739细胞后NF-κB p65活性显著增加,阻断TLR4后,NF-κB p65活性受到显著抑制(P<0.05);阻断TLR2后NF-κB p65活性却显著性增强(P<0.01)。结论:BCG作用T739后TLR2、CD14、MD-2和TLR4mRNA表达均不同程度增加,BCG可经TLR4使T739细胞NF-κB p65活性增强,不是经TLR2使T739细胞NF-κB p65活化。
出处 《细胞与分子免疫学杂志》 CAS CSCD 北大核心 2009年第3期276-279,共4页 Chinese Journal of Cellular and Molecular Immunology
基金 国家自然科学基金资助项目(30371819 30873426) 教育部高等学校博士学科点专项科研基金项目(20040572009) 广东省中医药局资助项目(1060086)
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