细胞特异性表观基因组范围内的DNA甲基化在外围CD4 (((+)) 淋巴细胞中的细胞特异性表观基因组范围内的DNA甲基化来自患有原发性胆道胆道炎的患者
Pinelopi Arvaniti1,2,3, Kalliopi Zachou1,2, Aggeliki Lyberopoulou1
1Department of Medicine and Research Laboratory of Internal Medicine, Expertise Center of Greece in Autoimmune Liver Diseases, General University Hospital of Larissa, Mezourlo, 41110, Larissa, Greece.
Journal of translational autoimmunity
|December 31, 2025
概括
表观遗传变化,特别是DNA高甲基化,在原发性胆道胆道炎 (PBC) 患者的CD4(+) 淋巴细胞中突出,影响免疫反应和潜在的性驱动疾病发展.
科学领域:
- 免疫学 免疫学 免疫学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 肝病学 肝病学是一种肝病学.
背景情况:
- 初级胆道胆炎 (PBC) 是一种具有复杂病因的慢性自身免疫性肝病.
- 遗传,环境和表观遗传因素有助于PBC病变的发生.
- 关于PBC中基因特异性表观遗传修饰的数据有限.
研究的目的:
- 在PBC患者中调查外围CD4 (((+) 淋巴细胞的甲基化概况.
- 将PBC患者与健康对照 (HC) 和自身免疫性肝炎 (AIH) 患者进行比较.
- 为了识别导致PBC病变的表观遗传修饰.
主要方法:
- 从从未接受过治疗的PBC患者,HC患者和AIH患者中分离CD4 (((+) 淋巴细胞.
- 使用Illumina 850k阵列进行全基因组甲基化分析.
- 通过RT-PCR对候选基因表达的量化.
主要成果:
- 在PBC和HC之间发现了显著的差异甲基化位置 (DMP),主要是超甲基化.
- 高甲基化影响了免疫细胞的分化和信号通路.
- 在PBC和AIH之间发现了广泛的DMP,其中丰富的细胞因子和介质蛋白信号传递.
- 在PBC中,IFN调节基因被过甲基化,IFNGR2表达增加.
结论:
- 超甲基化是PBC患者CD4 (((+) 淋巴细胞的一个关键表观遗传特征.
- 表观遗传修饰主要影响免疫反应途径.
- 显著的X染色体DMPs数量表明性别在PBC病变发生过程中的作用.
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