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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >MED1: A central molecule for maintenance of genome integrity and response to DNA damage
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MED1: A central molecule for maintenance of genome integrity and response to DNA damage

机译:MED1:维持基因组完整性和对DNA损伤反应的核心分子

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摘要

Maintaining genome integrity is a dynamic process that involves many different cellular pathways, including methylation maintenance, homologous recombination, DNA replication, DNA repair, and cell cycle control. A defect in one or more of these pathways can compromise genome integrity and result in cancer. A number of DNA repair proteins have been identified that also impact the regulation of the cell cycle and/or apoptosis . Individuals carrying germ-line mutations in such genes, like MLH1 or BRCA1, are predisposed to develop cancer. In this issue of PNAS, Cortellino et al. (3) provide evidence that MED1 belongs to this critical group of multifunction proteins. They show that MED1 impacts three processes necessary for the maintenance of genome integrity: base excision repair (BER), DNA mismatch repair (MMR), and the cell cycle response to DNA damage. Their work adds significant information to the growing body of research on the function of MED1 in maintenance of genome integrity (Fig. 1).
机译:维持基因组完整性是一个动态过程,涉及许多不同的细胞途径,包括甲基化维持,同源重组,DNA复制,DNA修复和细胞周期控制。这些途径中的一个或多个途径中的缺陷会损害基因组完整性,并导致癌症。已经鉴定出许多DNA修复蛋白,它们也影响细胞周期和/或凋亡的调节。在此类基因(例如MLH1或BRCA1)中带有种系突变的个体易患癌症。在本期PNAS中,Cortellino等人。 (3)提供证据证明MED1属于多功能蛋白的这一关键组。他们表明MED1影响维持基因组完整性的三个过程:碱基切除修复(BER),DNA错配修复(MMR)和细胞周期对DNA损伤的反应。他们的工作为有关MED1在维持基因组完整性中的功能的不断发展的研究提供了重要的信息(图1)。

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