Avoid the trap: Targeting PARP1 beyond human malignancy.

Avoid the trap: Targeting PARP1 beyond human malignancy.
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避免陷阱:靶向人类恶性肿瘤以外的PARP1。

DOI:
10.1016/j.chembiol.2021.02.004
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发表时间:
2021-04-15
影响因子:
8.6
通讯作者:
Yu Y
Yu Y
中科院分区:
生物学1区
文献类型:
--
作者:
Kim C;Chen C;Yu Y

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PARP 1是一种聚ADP核糖聚合酶(PARP),在调节DNA损伤反应中起关键作用。PARP1的主要酶功能是催化蛋白质翻译后修饰,称为聚ADP核糖基化(PAR化)。具有同源重组缺陷的人类癌症对PARP1抑制剂高度敏感。PARP1在许多非肿瘤疾病中被异常激活,导致NAD+过度消耗和PAR形成,从而引起细胞死亡和组织损伤。PARP1缺失在相关动物模型中提供了深刻的保护作用。然而,目前的许多PARP1抑制剂也诱导PARP1捕获,其驱动随后的DNA损伤、先天免疫应答和细胞毒性。这篇小综述概述了PARP1捕获的基本生物学及其在疾病中的意义。此外,我们还讨论了PARP1 PROTAC化合物的最新发展,以及它们作为“非捕获”PARP1降解剂用于潜在改善由异常PARP1激活驱动的非肿瘤疾病的效用。
PARP1 is a Poly-ADP-ribose Polymerase (PARP) enzyme that plays a critical role in regulating DNA damage response. The main enzymatic function of PARP1 is to catalyze a protein posttranslational modification known as Poly-ADP-Ribosylation (PARylation). Human cancers with homologous recombination deficiency are highly sensitive to PARP1 inhibitors. PARP1 is aberrantly activated in many non-oncological diseases, leading to the excessive NAD+ depletion and PAR formation, thus causing cell death and tissue damage. PARP1 deletion offers a profound protective effect in the relevant animal models. However, many of the current PARP1 inhibitors also induce PARP1 trapping, which drives subsequent DNA damage, innate immune response and cytotoxicity. This minireview provides an overview of the basic biology of PARP1 trapping, and its implications in disease. Further, we also discuss the recent development of PARP1 PROTAC compounds, and their utility as “non-trapping” PARP1 degraders for the potential amelioration of non-oncological diseases driven by aberrant PARP1 activation.
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