Protein-Protein Interactions in Translesion Synthesis.

Protein-Protein Interactions in Translesion Synthesis.
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跨损伤合成中的蛋白质 - 蛋白质相互作用

DOI:
10.3390/molecules26185544
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发表时间:
2021-09-13
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Hadden K
Hadden K
中科院分区:
其他
文献类型:
--
作者:
Dash RC;Hadden K

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跨损伤合成(TLS)是一种易错的DNA损伤耐受机制,活跃复制的细胞利用它来复制经过DNA损伤部位并延伸引物链。TLS确保细胞在存在受损DNA碱基的情况下继续复制,尽管这是以增加突变率为代价的。最近的研究表明,TLS通过允许癌细胞在化疗诱导的DNA损伤存在的情况下进行复制和存活,在挽救接受一线基因毒性药物治疗的癌细胞方面具有明确的作用。TLS在对化疗的初始反应以及获得性耐药的长期发展中的重要性使其成为小分子药物发现的一个有趣靶点。正常的TLS功能是一个复杂的过程,涉及一个异源蛋白复合物,该复合物通过多种蛋白质 - 蛋白质相互作用(PPI)介导多个附着和转换步骤。在这篇综述中,我们简要描述了TLS在癌症中的重要性,并对关键的TLS蛋白质 - 蛋白质相互作用进行了深入分析,重点关注蛋白质 - 蛋白质相互作用界面的关键结构特征,同时也探讨了每个关键蛋白质 - 蛋白质相互作用的潜在成药性。
Translesion synthesis (TLS) is an error-prone DNA damage tolerance mechanism used by actively replicating cells to copy past DNA lesions and extend the primer strand. TLS ensures that cells continue replication in the presence of damaged DNA bases, albeit at the expense of an increased mutation rate. Recent studies have demonstrated a clear role for TLS in rescuing cancer cells treated with first-line genotoxic agents by allowing them to replicate and survive in the presence of chemotherapy-induced DNA lesions. The importance of TLS in both the initial response to chemotherapy and the long-term development of acquired resistance has allowed it to emerge as an interesting target for small molecule drug discovery. Proper TLS function is a complicated process involving a heteroprotein complex that mediates multiple attachment and switching steps through several protein–protein interactions (PPIs). In this review, we briefly describe the importance of TLS in cancer and provide an in-depth analysis of key TLS PPIs, focusing on key structural features at the PPI interface while also exploring the potential druggability of each key PPI.
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