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脂多糖体外诱导牙周膜成纤维细胞发生内质网应激 被引量:5

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摘要 目的观测脂多糖(LPS)是否诱导人牙周膜成纤维细胞(HPDLF)发生内质网应激。方法体外培养HPDLF,分别用LPS(0.1、1、10μg/mL)刺激0、3、6、9 h后收集细胞,提取RNA。采用实时荧光定量PCR检测葡萄糖调节蛋白78(GRP78)、CHOPmRNA表达水平,通过RT-PCR检测XBP1mRNA表达水平及剪切活化情况。结果 LPS作用HPDLF 3 h后GRP78、CHOP、XBP1mRNA表达水平显著上调,其中XBP1mRNA表达水平在6 h达到高峰,并且出现活化的剪切形式XBP1s,而GRP78、CHOPmRNA表达水平持续上调。结论 LPS作用HPDLF后细胞发生内质网应激,且存在浓度和一定的时间依赖性。
出处 《细胞与分子免疫学杂志》 CAS CSCD 北大核心 2013年第3期277-279,281,共4页 Chinese Journal of Cellular and Molecular Immunology
基金 国家自然科学基金(31070749 30972683)
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