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Received:March 25, 2022 Published Online:January 20, 2023
Received:March 25, 2022 Published Online:January 20, 2023
中文摘要: 星形细胞瘤是发生于神经外胚叶组织的原发性肿瘤,它生长迅速且呈恶性侵袭性发展,具有多种信号通路调控。其中典型的Wnt/β-catenin信号通路参与了星形细胞瘤的发展,当该通路被异常激活时,β-catenin进入细胞核内与T细胞因子(TCF)/淋巴样增强因子(LEF)形成功能复合物,进而激活下游基因如c-Myc、cyclinD1的表达,参与调控细胞增殖、迁移等一系列重要过程,从而导致星形细胞瘤的发生。程序性细胞死亡配体1(PD-L1)是一种免疫抑制受体配体,当程序性细胞死亡受体-1(PD-1)与其配体PD-L1结合后,抑制T细胞的活化,从而促进肿瘤细胞免疫逃逸。β-catenin失活能降低PD-L1的表达,β-catenin的激活可能促进星形细胞瘤的免疫逃逸。本文就β-catenin和PD-L1在弥漫浸润型星形细胞瘤发生发展中的作用及相关性进行概述。
Abstract:Astrocytomaisaprimarytumorthatoccursinneuroectodermaltissue.Itgrowsrapidlyanddevelopsinamalignantandinvasivemanner,andhasmultiplesignalpathwaysregulation.ThetypicalWnt/β-cateninsignalpathwayisinvolvedinthedevelopmentofastrocytoma.Whenthispathwayisabnormallyactivated,β-cateninentersthenucleusandformsafunctionalcomplexwithTcellfactor(TCF)/lymphoidenhancerfactor(LEF),therebyactivatingtheexpressionofdownstreamgenessuchasc-MycandcyclinD1,participatinginaseriesofimportantprocessessuchascellproliferationandmigration,thusleadingtotheoccurrenceofastrocytoma.Programmeddeath-ligand1(PD-L1)isanimmunosuppressivereceptorligand.Whenprogrammeddeath(PD-1)bindstoitsligandPD-L1,itinhibitstheactivationofTcells,therebypromotingtumorcellimmuneescape.Theinactivationofβ-catenincanreducetheexpressionofPD-L1,whiletheactivationofβ-catenincanpromotetheimmuneescapeofastrocytoma.Thisarticlesummarizestheroleandcorrelationofβ-cateninandPD-L1intheoccurrenceanddevelopmentofdiffuseinfiltratingastrocytoma.
文章编号: 中图分类号:R739.41 文献标志码:A
基金项目:贵州省卫生健康委科学技术基金项目(gzwjkj2020-1-180)
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