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T-bet对肺癌细胞系(Lewis细胞)致瘤作用的体内干预研究

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摘要 目的:探讨T-bet质粒局部应用对小鼠肺癌细胞皮下移植瘤的干预作用。方法:将传代培养的Lewis肺癌细胞接种于小鼠右肩部皮下,制备荷瘤小鼠模型;瘤内分别注射PIRES-eGFP/mT-bet(m指小鼠)、PIRES-eGFP质粒和PBS,观察各组小鼠存活时间,肿瘤体积的变化;HE染色观察肿瘤组织的病理变化;Western blot检测肿瘤组织T-bet的表达,QRT-PCR检测肿瘤组织T-bet和IFN-γ的mRNA水平。结果:瘤内注射T-bet质粒载体后Western blot检测发现,肿瘤组织T-bet蛋白表达显著高于对照组;QRT-PCR结果显示,肿瘤组织T-bet和IFN-γ的mRNA水平呈上升趋势,与对照组相比差异有统计学意义(P<0.05)。T-bet质粒干预组小鼠肿瘤生长明显缓慢,存活期延长。HE染色组织病理观察可见mT-bet干预组小鼠局部组织淋巴细胞大量浸润。结论:T-bet基因局部注射可延缓小鼠肺癌Lewis皮下移植瘤的生长,提高机体的抗肿瘤免疫应答能力,增强对已发肿瘤的生长限制作用,为T-bet应用于肿瘤治疗积累试验数据。
出处 《细胞与分子免疫学杂志》 CAS CSCD 北大核心 2011年第8期862-864,共3页 Chinese Journal of Cellular and Molecular Immunology
基金 国家自然科学基金资助项目(30871193 30972748)
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