Targeting the COP9 signalosome for cancer therapy.

Targeting the COP9 signalosome for cancer therapy.
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靶向 COP9 信号体进行癌症治疗

DOI:
10.20892/j.issn.2095-3941.2021.0605
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发表时间:
2022-03-21
影响因子:
5.5
通讯作者:
Pei, Dongsheng
Pei, Dongsheng
中科院分区:
医学2区
文献类型:
--
作者:
Du, Wenqi;Zhang, Ruicheng;Muhammad, Bilal;Pei, Dongsheng

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COP9 信号体(CSN)是一种高度保守的蛋白质复合体,由 8 个亚基(CSN1 至 CSN8)组成。CSN 的各个亚基在细胞增殖、肿瘤发生、细胞周期调控、DNA 损伤修复、血管生成和微环境稳态中发挥着重要作用。CSN 复合物有一种内在金属蛋白酶,能从cullin-RING连接酶(CRLs)上去除泛素样激活剂NEDD8。CSN4 会感知 NEDDylated CRLs 与 CSN 的结合,并在 CSN6 的协助下将其传递给 CSN5,从而导致变性酶的激活。因此,在癌症进展过程中,CSN 是介于去乙酰化和泛素化之间的关键调节因子。在此,我们总结了目前对单个 CSN 亚基在癌症进展中的作用的理解。此外,我们还解释了 CSN 如何通过调节转录因子和细胞周期来影响肿瘤发生。最后,我们讨论了作为潜在治疗靶点的各个 CSN 亚基,从而为癌症治疗提供新的方向和策略。
The COP9 signalosome (CSN) is a highly conserved protein complex composed of 8 subunits (CSN1 to CSN8). The individual subunits of the CSN play essential roles in cell proliferation, tumorigenesis, cell cycle regulation, DNA damage repair, angiogenesis, and microenvironmental homeostasis. The CSN complex has an intrinsic metalloprotease that removes the ubiquitin-like activator NEDD8 from cullin-RING ligases (CRLs). Binding of neddylated CRLs to CSN is sensed by CSN4 and communicated to CSN5 with the assistance of CSN6, thus leading to the activation of deneddylase. Therefore, CSN is a crucial regulator at the intersection between neddylation and ubiquitination in cancer progression. Here, we summarize current understanding of the roles of individual CSN subunits in cancer progression. Furthermore, we explain how the CSN affects tumorigenesis through regulating transcription factors and the cell cycle. Finally, we discuss individual CSN subunits as potential therapeutic targets to provide new directions and strategies for cancer therapy.
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