Chromatin structure as a mediator of aging.

Chromatin structure as a mediator of aging.
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DOI:
10.1016/j.febslet.2010.11.016
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发表时间:
2011-07-07
期刊:
影响因子:
3.5
通讯作者:
Tyler J
Tyler J
中科院分区:
生物学3区
文献类型:
--
作者:
Feser J;Tyler J

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衰老过程的特征是生物体大分子的逐渐变化,这对生物过程产生了负面影响。染色质复杂的大分子结构调节所有需要进入DNA序列的核过程。因此,染色质结构的维持是阻止过早衰老的组成部分。在这篇综述中,我们描述了目前的研究,联系老化染色质结构。组蛋白修饰影响染色质致密化和基因表达,并在衰老过程中发生许多变化。组蛋白水平在衰老过程中也会下降,显著影响染色质结构。令人兴奋的是,通过逆转染色质结构的年龄依赖性变化的操作可以延长寿命,这表明染色质结构在衰老过程中起着关键作用。
The aging process is characterized by gradual changes to an organism's macromolecules, which negatively impacts biological processes. The complex macromolecular structure of chromatin regulates all nuclear processes requiring access to the DNA sequence. As such, maintenance of chromatin structure is an integral component to deter premature aging. In this review, we describe current research that links aging to chromatin structure. Histone modifications influence chromatin compaction and gene expression and undergo many changes during aging. Histone protein levels also decline during aging, dramatically affecting chromatin structure. Excitingly, lifespan can be extended by manipulations that reverse the age-dependent changes to chromatin structure, indicating the pivotal role chromatin structure plays during aging.
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