泛素特异性蛋白酶5的生物学作用及其在肿瘤中的研究进展
The biological role of ubiquitin specific protease 5 and its research progress in tumor
泛素特异性蛋白酶5(USP5)作为去泛素化酶家族核心成员,通过水解未锚定多聚泛素链调控靶蛋白稳定性,在肿瘤发生、发展中发挥多重致癌作用。该文详细阐述了USP5的结构与生物学功能。USP5是一种含835个氨基酸残基的多结构域酶,其具有锌指结构域(ZnF UBP)、UBP结构域及两个泛素相关结构域。USP5在维持蛋白质稳定性、参与肿瘤发生信号通路传导、发挥胞外生物学作用,以及调节肿瘤细胞周期、凋亡和代谢重编程等具有重要生物学功能。在肿瘤研究进展上,USP5在多种肿瘤中作为潜在的诊断标志物、治疗靶点和预后评估生物标志物展现出重要意义,虽然相关抑制剂及调节其表达或活性的策略在癌症治疗中取得一定成果,但仍需深入研究以克服局限性。未来可以开展大量临床研究,深入分析、整合分子机制,为肿瘤的诊断治疗和预后评估等提供新的视角和方向。
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国家自然科学基金(82060464)
国家自然科学基金(82260609)
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