摘要
背景:癌细胞通常被免疫细胞识别为外来颗粒。越来越多的证据表明,Toll样受体(TLR)与致癌作用之间存在重要联系。这篇综述文章重点介绍TLR,特别是TLR4在乳腺癌中的作用。 方法:在PubMed,Scopus,Google Scholar中探索TLRs和癌症的研究数据并进行审查。虽然引用了一些先驱作品,但过去十年发表的论文大多被引用。 结果:TLR是被广泛研究的模式识别受体(PRR),TLR4是研究最多的TLR,与包括乳腺癌在内的几种类型的癌症的发生有关。TLR4活化通过其配体脂多糖(LPS)的结合发生,LPS是革兰氏阴性细菌外膜的一种成分。在LPS结合后,TLR4二聚并招募下游信号传导和/或适配器分子,导致与癌细胞增殖,存活,侵袭和转移相关的基因表达。虽然LPS / TLR4信号传导似乎是单一的信号转导途径,但TLR4激活导致多个不同的细胞内网络的激活,这些网络在免疫细胞和癌细胞中都具有巨大的细胞反应。TLR4在乳腺癌的生长,侵袭和转移中的作用在肿瘤学研究中引起了极大的关注。一些临床和临床前研究利用TLR4激动剂和拮抗剂作为癌症治疗的治疗选择,作为疫苗开发的单一疗法或佐剂。 结论:本文综述了LPS/TLR4信号在乳腺癌发展中的作用以及靶向LPS/TLR4轴在乳腺癌治疗中的未来前景。
关键词: 乳腺癌,Toll样受体4,脂多糖,信号通路,癌症治疗,细胞信号转导。
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