Chromatin dynamics associated with HIV-1 Tat-activated transcription.

Chromatin dynamics associated with HIV-1 Tat-activated transcription.
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DOI:
10.1016/j.bbagrm.2009.08.008
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发表时间:
2010-03
期刊:
Biochimica et biophysica acta
影响因子:
--
通讯作者:
Kashanchi F
Kashanchi F
中科院分区:
其他
文献类型:
--
作者:
Easley R;Van Duyne R;Coley W;Guendel I;Dadgar S;Kehn-Hall K;Kashanchi F

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染色质重构是HIV-1转录的重要事件。在过去的二十年里,这一研究领域已经走到了最前沿,因为通过染色质修饰沉默HIV-1前病毒与潜伏期有关。在这里,我们专注于染色质重塑,特别是与反式激活因子达特,并审查最重要的和新兴的研究,调查重塑机制。我们开始讨论共价修饰,可以改变染色质结构,包括乙酰化,脱乙酰化和甲基化,以及主题解决染色质重塑和剪接之间的相互作用。接下来,我们将重点关注使用ATP能量来去除或保护核小体的复合物,并可以额外控制HIV-1转录。最后,我们涵盖了最近的文献病毒microRNA已被证明改变染色质结构,通过诱导甲基化,甚至通过重塑核小体。
Chromatin remodeling is an essential event for HIV-1 transcription. Over the last two decades this field of research has come to the forefront, as silencing of the HIV-1 provirus through chromatin modifications has been linked to latency. Here, we focus on chromatin remodeling, especially in relation to the transactivator Tat, and review the most important and newly emerging studies that investigate remodeling mechanisms. We begin by discussing covalent modifications that can alter chromatin structure including acetylation, deacetylation, and methylation, as well as topics addressing the interplay between chromatin remodeling and splicing. Next, we focus on complexes that use the energy of ATP to remove or secure nucleosomes and can additionally act to control HIV-1 transcription. Finally, we cover recent literature on viral microRNAs which have been shown to alter chromatin structure by inducing methylation or even by remodeling nucleosomes.
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