The contribution of epigenetics in Sjögren's Syndrome.

The contribution of epigenetics in Sjögren's Syndrome.
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DOI:
10.3389/fgene.2014.00071
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发表时间:
2014
影响因子:
3.7
通讯作者:
Renaudineau Y
Renaudineau Y
中科院分区:
生物学3区
文献类型:
--
作者:
Konsta OD;Thabet Y;Le Dantec C;Brooks WH;Tzioufas AG;Pers JO;Renaudineau Y

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干燥综合征 (SS) 是一种慢性自身免疫性上皮炎,合并外分泌腺功能障碍和淋巴细胞浸润。虽然 SS 的发病机制尚不清楚,但其病因是多功能的,包括遗传倾向、环境因素和表观遗传因素的结合。最近,人们对表观遗传学在自身免疫性疾病中的作用越来越感兴趣。表观遗传学被定义为基因表达的变化,这种变化是可遗传的,并且不会引起 DNA 序列的变化。在 SS 中,多种表观遗传机制存在缺陷,包括上皮细胞中占主导地位的 DNA 去甲基化、microRNA 的异常表达以及与自身抗体产生相关的染色质定位异常。最后但并非最不重要的一点是,使用利妥昔单抗去除 B 细胞后,在 SS 患者的小唾液腺中观察到表观遗传修饰是可逆的。因此,SS 的表观遗传学发现为治疗方法以及新生物标志物的可能鉴定开辟了新的视角。
Sjögren’s syndrome (SS) is a chronic autoimmune epithelitis that combines exocrine gland dysfunctions and lymphocytic infiltrations. While the pathogenesis of SS remains unclear, its etiology is multifunctional and includes a combination of genetic predispositions, environmental factors, and epigenetic factors. Recently, interest has grown in the involvement of epigenetics in autoimmune diseases. Epigenetics is defined as changes in gene expression, that are inheritable and that do not entail changes in the DNA sequence. In SS, several epigenetic mechanisms are defective including DNA demethylation that predominates in epithelial cells, an abnormal expression of microRNAs, and abnormal chromatin positioning-associated with autoantibody production. Last but not least, epigenetic modifications are reversible as observed in minor salivary glands from SS patients after B cell depletion using rituximab. Thus epigenetic findings in SS open new perspectives for therapeutic approaches as well as the possible identification of new biomarkers.
DOI: 10.3109/08916934.2013.826207
发表时间: 2014-06
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