对于高通量酶性DNA甲基化测序的成本效益高的解决方案.
Amy Longtin1,2, Marina M Watowich1,2, Baptiste Sadoughi3,4
1Department of Biological Sciences, Vanderbilt University, Nashville, Tennessee, United States of America.
PLoS genetics
|May 22, 2025
概括
我们优化了向甲基化测序 (TMS) 以便于经济有效的,人口规模的DNA甲基化研究. 这种方法与现有技术有很强的一致性,并且在多种物种中工作,使得更广泛的基因组研究成为可能.
科学领域:
- 基因组学和表观遗传学
- 进化生物学 进化生物学
- 地质科学是地球科学.
背景情况:
- 基因甲基化分析对于理解进化,发育和疾病至关重要.
- 全基因组甲基化研究是昂贵的;需要减少表示方法.
- 像二硫酸盐转化这样的现有方法可以损害DNA并引入偏差.
研究的目的:
- 优化针对性甲基化测序 (TMS) 协议,以实现成本效益,小型化和多种应用.
- 将优化的TMS协议与已建立的DNA甲基化分析技术进行基准测试.
- 评估TMS对人口规模表观遗传学研究的有用性.
主要方法:
- 修改了目标甲基化测序 (TMS) 协议,通过增加多重复合,减少DNA输入,并使用酶分裂.
- 将TMS与Infinium MethylationEPIC BeadChip和全基因组双硫酸盐测序进行比较,使用对的人类样本.
- 将优化的TMS协议应用于三种非人类灵长类动物的DNA.
主要成果:
- 优化的TMS显示出高吞吐量和降低成本.
- TMS与甲基化EPIC BeadChip (R2=0.97) 和全基因组双硫酸盐测序 (R2=0.99) 有着强烈的一致性.
- 在非人类灵长类动物中,TMS捕获了77.1%的目标CpG,与其他方法具有很高的一致性 (R2=0.98).
结论:
- 优化的TMS协议是一种成本效益高,可靠的方法,用于人口规模的DNA甲基化分析.
- TMS适用于各种物种,促进比较表观基因组研究.
- 这种方法可以对表观遗传年龄和组织特定的甲基化模式进行可靠的估计.
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