Dysregulation of the epigenetic landscape of normal aging in Alzheimer's disease.

Dysregulation of the epigenetic landscape of normal aging in Alzheimer's disease.
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DOI:
10.1038/s41593-018-0101-9
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发表时间:
2018-04
影响因子:
25
通讯作者:
Berger SL
Berger SL
中科院分区:
医学1区
文献类型:
--
作者:
Nativio R;Donahue G;Berson A;Lan Y;Amlie-Wolf A;Tuzer F;Toledo JB;Gosai SJ;Gregory BD;Torres C;Trojanowski JQ;Wang LS;Johnson FB;Bonini NM;Berger SL

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衰老是阿尔茨海默病(AD)最强的危险因素,尽管其潜在机制仍不清楚。染色质状态,特别是通过标记H4K16ac,与衰老有关,因此可能在与年龄相关的神经退行性变中起关键作用。在这里,我们比较了全基因组富集的H4K16ac在侧颞叶的AD个人对年轻和老年认知正常对照。我们发现,虽然正常衰老导致H4K16ac富集,但AD在与衰老和AD相关的基因附近导致H4K16ac的急剧损失。我们的分析强调了存在三类AD相关的变化与独特的功能作用。此外,我们发现了显着的H4K16ac变化的基因组位置之间的关联与遗传变异在以前的AD全基因组关联研究和表达的数量性状基因座。我们的研究结果为衰老和AD之间的表观遗传联系奠定了基础。
Aging is the strongest risk factor for Alzheimer’s disease (AD), although the underlying mechanisms remain unclear. The chromatin state, in particular through the mark H4K16ac, has been implicated in aging and thus may play a pivotal role in age-associated neurodegeneration. Here we compare the genome-wide enrichment of H4K16ac in the lateral temporal lobe of AD individuals against both younger and elderly cognitively normal controls. We found that while normal aging leads to H4K16ac enrichment, AD entails dramatic losses of H4K16ac in the proximity of genes linked to aging and AD. Our analysis highlights the presence of three classes of AD-related changes with distinctive functional roles. Furthermore, we discovered an association between the genomic locations of significant H4K16ac changes with genetic variants identified in prior AD genome-wide association studies and with expression quantitative trait loci. Our results establish the basis for an epigenetic link between aging and AD.
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