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程序性死亡配体1在结直肠癌中的表达及作用 被引量:4

Expression and effect of programmed cell death ligand-1 in colorectal cancer
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摘要 目的:探讨程序性死亡配体1(PD-L1)在结直肠癌组织中的表达及其对结直肠癌细胞生长的影响。方法:采用免疫组化法测定各结直肠癌组织及癌旁组织、结直肠腺瘤组织、正常结直肠组织标本中PD-L1的表达;将结肠癌HCT116细胞分别转染PD-L1 si RNA(PD-L1 si RNA组)和阴性对照si RNA(阴性对照组),以无处理的HCT116细胞为空白对照组,然后分别用Western blot法、MTT法、流式细胞术、Transwell法检测各组细胞中PD-L1蛋白的表达、细胞增殖、凋亡与侵袭能力。结果:PD-L1在结直肠癌组织、结直肠腺瘤组织、癌旁组织、正常结直肠组织中的阳性表达率分别为45.0%、33.0%、10.0%、0,差异有统计学意义(P<0.05);与空白对照组HCT116细胞比较,PD-L1 si RNA组HCT116细胞的增殖能力明显降低、细胞凋亡率明显升高、侵袭细胞数明显减少(均P<0.05),而阴性对照组与空白对照组以上指标均无统计学差异(均P>0.05)。结论:结直肠癌组织和中PD-L1表达水平升高,升高的PD-L1与结直肠癌细胞的恶性生物学行为有关。
出处 《中国普通外科杂志》 CAS CSCD 北大核心 2018年第6期792-795,共4页 China Journal of General Surgery
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