The evolving complexity of DNA damage foci: RNA, condensates and chromatin in DNA double-strand break repair.

The evolving complexity of DNA damage foci: RNA, condensates and chromatin in DNA double-strand break repair.
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DNA损伤焦点的演变复杂性:DNA双链断裂修复中的RNA、浓缩物和染色质。

DOI:
10.1016/j.dnarep.2021.103170
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发表时间:
2021-09
期刊:
影响因子:
3.8
通讯作者:
Rothenberg E
Rothenberg E
中科院分区:
医学3区
文献类型:
--
作者:
Fijen C;Rothenberg E

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生物分子凝聚物的形成越来越被认为是细胞应对压力和优化酶促反应的一种机制。最近的研究将几个DNA修复病灶描述为相分离凝聚体,表现得像液滴。同时,长链非编码rna和rna结合蛋白对双链断裂修复的明显重要性也引发了许多关于它们对修复过程的确切贡献的问题。在这里,我们讨论RNA分子如何参与凝析物的形成,以及RNA结合蛋白如何作为分子支架。我们进一步总结了目前关于凝析油的性质如何影响修复途径选择(同源重组或非同源末端连接)的知识,并确定了这一领域新兴重要性的开放性问题。
Formation of biomolecular condensates is increasingly recognized as a mechanism employed by cells to deal with stress and to optimize enzymatic reactions. Recent studies have characterized several DNA repair foci as phase-separated condensates, behaving like liquid droplets. Concomitantly, the apparent importance of long non-coding RNAs and RNA-binding proteins for the repair of double-strand breaks has raised many questions about their exact contribution to the repair process. Here we discuss how RNA molecules can participate in condensate formation and how RNA-binding proteins can act as molecular scaffolds. We furthermore summarize our current knowledge about how properties of condensates can influence the choice of repair pathway (homologous recombination or non-homologous end joining) and identify the open questions in this field of emerging importance.
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