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Cell Death Dis:TIPRL通过诱导自噬增强肺癌的生存力

2020-02-10 QQY MedSci原创

自噬,是降解受损细胞器及错误折叠蛋白的一种细胞内系统,在癌细胞的生存过程中发挥着至关重要的作用。虽然对自噬的机制研究上有了突破性的进展,但目前对新型的自噬调节剂的鉴定仍是抗癌治疗研究中的主要障碍。本研究主要探究了在肿瘤的恶性转化过程中,TOR信号通路调节剂样(TIPRL)蛋白和自噬之间的关系。研究人员发现在非小细胞肺癌(NSCLC)中,TIPRL的表达上调能够增强自噬的活性,并引起细胞代谢及细胞应

自噬,是降解受损细胞器及错误折叠蛋白的一种细胞内系统,在癌细胞的生存过程中发挥着至关重要的作用。虽然对自噬的机制研究上有了突破性的进展,但目前对新型的自噬调节剂的鉴定仍是抗癌治疗研究中的主要障碍。

本研究主要探究了在肿瘤的恶性转化过程中,TOR信号通路调节剂样(TIPRL)蛋白和自噬之间的关系。

研究人员发现在非小细胞肺癌NSCLC)中,TIPRL的表达上调能够增强自噬的活性,并引起细胞代谢及细胞应激相关的自噬清除,为癌细胞提供生存优势。

重要的是,TIPRL与真核起始因子2α(eIF2α)的相互作用会导致eIF2α的磷酸化及eIF2α-ATF4信号通路的激活,进而引起细胞自噬。相反,TIPRL耗竭可通过减少自噬清除来增加细胞凋亡;而2-脱氧-葡萄糖处理TIPRL耗竭的A549异种移植瘤可显著增强自噬。

总而言之,该研究表明TIPRL是一种潜在的自噬调节剂,有望成为治疗肺癌的一个重要靶标。

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    2020-12-19 维他命
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    2020-02-12 cy0328
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