Why are RNA processing factors recruited to DNA double-strand breaks?

IF 13.6 2区 生物学 Q1 GENETICS & HEREDITY
Feras E Machour, Alma Sophia Barisaac, Nabieh Ayoub
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引用次数: 0

Abstract

DNA double-strand break (DSB) induction leads to local transcriptional silencing at damage sites, raising the question: Why are RNA processing factors (RPFs), including splicing factors, rapidly recruited to these sites? Recent findings show that DSBs cluster in a chromatin compartment termed the 'D compartment', where DNA damage response (DDR) genes relocate and undergo transcriptional activation. Here, we propose two non-mutually exclusive models to elucidate the rationale behind the recruitment of RPFs to DSB sites. First, RPFs circulate through the D compartment to process transcripts of the relocated DDR genes. Second, the D compartment serves as a 'post-translational modifications (PTMs) hub', altering RPF activity and leading to the production of unique DNA damage-induced transcripts, which are essential for orchestrating the DDR.

为什么 DNA 双链断裂处会招募 RNA 处理因子?
DNA 双链断裂(DSB)诱导会导致损伤位点的局部转录沉默,这就提出了一个问题:为什么包括剪接因子在内的 RNA 处理因子(RPFs)会被迅速招募到这些位点?最近的研究结果表明,DSB 聚集在一个称为 "D 区室 "的染色质区室中,DNA 损伤应答(DDR)基因在这里迁移并发生转录激活。在这里,我们提出了两个互不排斥的模型,以阐明RPFs被招募到DSB位点背后的原理。首先,RPFs 通过 D 区室循环处理被迁移的 DDR 基因的转录本。其次,D区作为 "翻译后修饰(PTMs)枢纽",改变了RPF的活性并导致产生独特的DNA损伤诱导转录本,这些转录本对于协调DDR至关重要。
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来源期刊
Trends in Genetics
Trends in Genetics 生物-遗传学
CiteScore
20.90
自引率
0.90%
发文量
160
审稿时长
6-12 weeks
期刊介绍: Launched in 1985, Trends in Genetics swiftly established itself as a "must-read" for geneticists, offering concise, accessible articles covering a spectrum of topics from developmental biology to evolution. This reputation endures, making TiG a cherished resource in the genetic research community. While evolving with the field, the journal now embraces new areas like genomics, epigenetics, and computational genetics, alongside its continued coverage of traditional subjects such as transcriptional regulation, population genetics, and chromosome biology. Despite expanding its scope, the core objective of TiG remains steadfast: to furnish researchers and students with high-quality, innovative reviews, commentaries, and discussions, fostering an appreciation for advances in genetic research. Each issue of TiG presents lively and up-to-date Reviews and Opinions, alongside shorter articles like Science & Society and Spotlight pieces. Invited from leading researchers, Reviews objectively chronicle recent developments, Opinions provide a forum for debate and hypothesis, and shorter articles explore the intersection of genetics with science and policy, as well as emerging ideas in the field. All articles undergo rigorous peer-review.
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