全球DNA甲基化和DNA甲基转移酶在沙特烟民中的状态
Areej AlAmeer1, Samar Sultan1,2
1Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 80200, Saudi Arabia.
Life (Basel, Switzerland)
|February 26, 2025
概括
吸烟导致全球DNA低甲基化,并增加沙特吸烟者的DNA甲基转移酶 (DNMTs). 这些表观遗传变化与吸烟持续时间相关,这表明与吸烟相关疾病有联系.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
- 公共卫生 公共卫生
背景情况:
- 吸烟是全球主要的健康问题,也是影响表观遗传变化的已知环境因素.
- 表观遗传失调,特别是DNA甲基化变化,与包括癌症在内的各种疾病有关.
研究的目的:
- 调查吸烟对沙特人口全球DNA甲基化和DNA甲基转移酶 (DNMT) 度的影响.
- 为了比较香烟吸烟者和非吸烟者之间的甲基化概况和DNMT水平.
主要方法:
- 收集了36名沙特烟民和36名非烟民的全血样本.
- 量化全球DNA甲基化使用5-甲基化素 (5-mC) 色度测试.
- 通过酶相关免疫吸收试验 (ELISA) 测量DNA甲基转移酶 (DNMT1,DNMT3A,DNMT3B) 的血度.
主要成果:
- 与非吸烟者相比,吸烟者具有明显较低的全球DNA甲基化 (低甲基化) (p < 0.001).
- 在吸烟者中,DNMT1,DNMT3A和DNMT3B的度显著升高 (p < 0.005).
- 全球DNA低甲基化和DNMT度与吸烟持续时间有显著的相关性.
结论:
- 暴露在香烟烟雾中导致表观遗传失调,其特征是全球DNA低甲基化和DNMT增加.
- 这些发现突出了通过改变DNA甲基化模式将吸烟与癌症等疾病联系在一起的潜在机制.
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