The role of epigenetics in aging and autoimmunity.

The role of epigenetics in aging and autoimmunity.
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DOI:
10.1007/s12016-009-8169-3
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发表时间:
2010-08
影响因子:
9.1
通讯作者:
Yung, Raymond L.
Yung, Raymond L.
中科院分区:
医学1区
文献类型:
--
作者:
Grolleau-Julius, Annabelle;Ray, Donna;Yung, Raymond L.

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随着年龄的增长,免疫能力下降,伴随着自身免疫性疾病发病率的增加。免疫系统的老化或免疫衰老的特征在于T和B细胞功能的下降,并且矛盾的是存在低度慢性炎症。越来越多的证据表明,表观遗传学,即研究基因表达的遗传变化,而不是由DNA序列本身编码,随着年龄的增长而变化。有趣的是,新出现的证据表明表观遗传学在人类病理学中起着关键作用,包括炎症和肿瘤性疾病。在这里,我们将审查的潜在机制,有助于增加自身免疫反应的老化。特别是,我们将讨论表观遗传改变,特别是DNA甲基化和组蛋白乙酰化,是如何在衰老过程中积累的,以及这些事件如何导致自身免疫风险。
The decline in immunocompetence with age is accompanied by the increase in the incidence of autoimmune diseases. Aging of the immune system, or immunosenescence, is characterized by a decline of both T and B cell function, and paradoxically the presence of low-grade chronic inflammation. There is growing evidence that epigenetics, the study of inherited changes in gene expression that are not encoded by the DNA sequence itself, changes with aging. Interestingly, emerging evidence suggests a key role for epigenetics in human pathologies, including inflammatory and neoplastic disorders. Here, we will review the potential mechanisms that contribute to the increase in autoimmune responses in aging. In particular, we will discuss how epigenetic alterations, especially DNA methylation and histone acetylation, are accumulated during aging and how these events contribute to autoimmunity risk.
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