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探索DNMT1多态性和表达在哈希莫托甲状腺炎的发病因子
Zainab Sameer Sabti1, Haider Jassim Muhammed2, Anmar Dhia Aldeen Abu Alhab3
1Department of Forensic Science, College of Science, AL-Nahrain University, Baghdad, Iraq.
Reports of biochemistry & molecular biology
|February 9, 2026
概括
哈西莫托甲状腺炎与增加的DNA甲基转移酶1 (DNMT1) 表达和甲状腺功能障碍有关. DNMT1 rs2228611的多态性表明在疾病风险方面具有潜在的,尽管有限的作用.
科学领域:
- 内分泌学和免疫学.
- 分子生物学和遗传学
背景情况:
- 哈西莫托甲状腺炎是一种自身免疫性疾病,具有遗传和环境影响.
- 通过DNA甲基转移酶1 (DNMT1) 介导的DNA甲基化,与其致病性有关.
- 研究DNMT1在哈西莫托甲状腺炎中的作用对于了解疾病机制至关重要.
研究的目的:
- 检查DNMT1基因多态性 (rs2228611) 与哈希莫托甲状腺炎患者的基因表达之间的关联.
- 在患者和对照者之间比较甲状腺刺激激素 (TSH) 和抗甲状腺过氧化酶 (anti-TPO) 抗体的血清水平.
- 阐明涉及DNMT1.1的哈希莫托甲状腺炎的分子基础.
主要方法:
- 一项病例对照研究,涉及50名哈希莫托甲状腺炎患者和50名健康对照.
- 通过ELISA测量血清TSH和抗TPO抗体.
- 使用定量实时PCR (qRT-PCR) 分析DNMT1基因表达,并通过HRM-PCR评估DNMT1rs2228611多态性.
主要成果:
- 哈西莫托甲状腺炎患者的TSH和抗TPO水平显著上升 (p < 0.0001).
- 在患者中,DNMT1基因表达被上调了1.7倍 (p = 0.04).
- 没有观察到DNMT1 rs2228611等位基因或基因型频率的显著差异,尽管TT基因型倾向于增加风险 (p = 0.07),CT基因型建议保护.
结论:
- 提升DNMT1表达和甲状腺功能障碍是哈希莫托甲状腺炎的特征.
- DNMT1 rs2228611多态可能在哈希莫托甲状腺炎中起到有限的作用.
- 需要对更大的队列进行进一步的研究,以确认DNMT1多态化的影响.
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