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当代肿瘤药物靶点

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ISSN (Print): 1568-0096
ISSN (Online): 1873-5576

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Research Article

BRD4在胃癌中的过表达及其作为新型治疗靶点的临床意义

卷 24, 期 2, 2024

发表于: 12 July, 2023

页: [167 - 177] 页: 11

弟呕挨: 10.2174/1568009623666230606164030

价格: $65

摘要

背景：BRD4是溴域和额外末端结构域(BET)蛋白家族的成员，包含两个溴域和一个额外末端结构域，在几种人类恶性肿瘤中过表达。然而，其在胃癌中的表达尚未得到很好的阐明。 目的：本研究旨在阐明BRD4在胃癌中的过表达及其作为新的治疗靶点的临床意义。 方法：采集胃癌患者新鲜胃癌组织和石蜡包埋标本，分别采用Western Blot分析(WB)和免疫组化分析(IHC)检测BRD4的表达。分析BRD4表达与胃癌患者临床病理特征及生存的可能关系。采用MTT法、WB法、创面愈合法和Transwell侵袭法研究BRD4沉默对人胃癌细胞株的影响。 结果：结果显示，肿瘤组织和癌旁组织中表达量均显著高于正常组织(P < 0.01)。BRD4在胃癌组织中的表达水平与肿瘤分化程度(P = 0.033)、区域淋巴结转移(P = 0.038)、临床分期(P = 0.002)、生存情况(P = 0.000)密切相关，而与患者的性别(P = 0.564)、年龄(P = 0.926)、浸润深度(P = 0.619)无关。BRD4表达升高导致总生存率降低(P = 0.003)。在体外实验中，BRD4小干扰RNA导致BRD4蛋白表达显著降低，从而抑制胃癌细胞的增殖、迁移和侵袭。 结论：BRD4可能成为胃癌早期诊断、预后和治疗靶点的新型生物标志物。

关键词: 胃癌，BRD4，预后，siRNA, western blot，增殖。

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