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当前在癌症化疗耐药性中针对 KEAP1-NRF2 和 β-TrCP-NRF2 相互作用的治疗靶向的现状和未来前景。

The current status and future prospects for therapeutic targeting of KEAP1-NRF2 and β-TrCP-NRF2 interactions in cancer chemoresistance.

机构信息

UCL School of Pharmacy, University College London, 29/39 Brunswick Square, London, WC1N 1AX, UK.

Centro de Investigación Biomédica en Red Sobre Enfermedades Neurodegenerativas (CIBERNED), Instituto de Investigación Sanitaria La Paz (IdiPaz), Department of Biochemistry and Instituto de Investigaciones Biomédicas Alberto Sols UAM-CSIC, Faculty of Medicine, Autonomous University of Madrid, Madrid, Spain.

出版信息

Free Radic Biol Med. 2022 Nov 1;192:246-260. doi: 10.1016/j.freeradbiomed.2022.09.023. Epub 2022 Sep 28.

Abstract

Drug resistance is one of the biggest challenges in cancer treatment and limits the potential to cure patients. In many tumors, sustained activation of the protein NRF2 makes tumor cells resistant to chemo- and radiotherapy. Thus, blocking inappropriate NRF2 activity in cancers has been shown to reduce resistance in models of the disease. There is a growing scientific interest in NRF2 inhibitors. However, the compounds developed so far are not target-specific and are associated with a high degree of toxicity, hampering clinical applications. Compounds that can enhance the binding of NRF2 to its ubiquitination-facilitating regulator proteins, either KEAP1 or β-TrCP, have the potential to increase NRF2 degradation and may be of value as potential chemosensitising agents in cancer treatment. Approaches based on molecular glue-type mechanisms, in which ligands stabilise a ternary complex between a protein and its binding partner have shown to enhance β-catenin degradation by stabilising its interaction with β-TrCP. This strategy could be applied to rationally discover degradative β-TrCP-NRF2 and KEAP1-NRF2 protein-protein interaction enhancers. We are proposing a novel approach to selectively suppress NRF2 activity in tumors. It is based on recent methodology and has the potential to be a promising new addition to the arsenal of anticancer agents.

摘要

耐药性是癌症治疗中面临的最大挑战之一,限制了治愈患者的潜力。在许多肿瘤中,NRF2 蛋白的持续激活使肿瘤细胞对化疗和放疗产生耐药性。因此,在疾病模型中阻断癌症中不适当的 NRF2 活性已被证明可以降低耐药性。人们对 NRF2 抑制剂的兴趣日益浓厚。然而,迄今为止开发的化合物不是针对特定靶点的,并且具有高度的毒性,阻碍了临床应用。能够增强 NRF2 与其泛素化促进调节蛋白 KEAP1 或 β-TrCP 结合的化合物有可能增加 NRF2 的降解,并且可能作为癌症治疗中的潜在化学增敏剂具有价值。基于分子胶型机制的方法,其中配体稳定蛋白质与其结合伙伴之间的三元复合物,已显示通过稳定其与 β-TrCP 的相互作用来增强 β-连环蛋白的降解。这种策略可以应用于合理地发现降解性β-TrCP-NRF2 和 KEAP1-NRF2 蛋白-蛋白相互作用增强剂。我们提出了一种选择性抑制肿瘤中 NRF2 活性的新方法。它基于最近的方法,有可能成为抗癌药物新武器的有前途的补充。

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