Ubiquitin proteasome system in immune regulation and therapeutics.

Ubiquitin proteasome system in immune regulation and therapeutics.
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免疫调节和治疗中的泛素蛋白酶体系统。

DOI:
10.1016/j.coph.2022.102310
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发表时间:
2022-12
影响因子:
4
通讯作者:
--
中科院分区:
医学3区
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--
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泛素蛋白酶体系统(UPS)是一种蛋白质水解机制,通过泛素连接酶的酶促作用,降解翻译后与泛素聚合物结合的蛋白质底物,这一过程被称为泛素化。底物的泛素化先于蛋白酶体的蛋白水解,这是UPS的一个分层特征。e3 -泛素连接酶募集蛋白质底物,为泛素化提供特异性。先天和适应性免疫系统网络通过e3 -连接酶/UPS受泛素化和底物降解调节。免疫细胞中e3连接酶/UPS成分的失调与淋巴瘤、神经发育异常和癌症的发生有关。靶向e3连接酶进行治疗干预为减轻26S蛋白酶体抑制的意外广泛影响提供了机会。最近,双功能部分(如PROTACs和分子胶)被开发出来,重新利用e3连接酶靶向降解不需要的异常蛋白,具有临床应用的潜力。在这里,我们从不同角度总结了e3连接酶/UPS组分在免疫相关疾病中的作用。
The ubiquitin proteasome system (UPS) is a proteolytic machinery for the degradation of protein substrates that are post-translationally conjugated with ubiquitin polymers through the enzymatic action of ubiquitin ligases, in a process termed ubiquitylation. Ubiquitylation of substrates precedes their proteolysis via proteasomes, a hierarchical feature of UPS. E3-ubiquitin ligases recruit protein substrates providing specificity for ubiquitylation. Innate and adaptive immune system networks are regulated by ubiquitylation and substrate degradation via E3-ligases/UPS. Deregulation of E3-ligases/UPS components in immune cells is involved in the development of lymphomas, neurodevelopmental abnormalities, and cancers. Targeting E3-ligases for therapeutic intervention provides opportunities to mitigate the unintended broad effects of 26S proteasome inhibition. Recently, bifunctional moieties such as PROTACs and molecular glues have been developed to re-purpose E3-ligases for targeted degradation of unwanted aberrant proteins, with a potential for clinical use. Here, we summarize the involvement of E3-ligases/UPS components in immune-related diseases with perspectives.
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