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基于一种新型的hpTet3酶,实时测序强大的无二硫酸盐单分子甲基脱氧基丁

Hanife Sahin¹, Raheleh Salehi¹, Shariful Islam¹

¹Center for Nucleic Acid Therapies at the Department of Chemistry, Institute for Chemical Epigenetics, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377, München, Germany.

Angewandte Chemie (International ed. in English)

|November 13, 2024

概括

一种新的方法,EMox-seq,可以在不损害DNA的情况下测序5-甲基解氧化 (mdC). 这种没有二硫酸盐的方法使用Tet3酶和AI驱动的SMRT测序来进行准确的基因表达分析和癌症诊断.

科学领域:

表观遗传学和基因组学
分子生物学分子生物学
生物技术是生物技术.

背景情况:

基因组DNA含有5-甲基脱氧基丁 (mdC) 与正规核酸一起.
mdC甲基化模式极大地影响基因转录活动,影响基因沉默或激活.
通过识别异常基因表达,对mdC位置的精确测序对于早期癌症诊断至关重要.

研究的目的:

在基因组DNA中开发一种新的,非破坏性的5甲基解氧化 (mdC) 测序方法.
为了克服当前二硫酸盐测序方法的局限性,包括DNA降解和错误.
建立一种更有效,更准确的方法来分析DNA甲基化模式.

主要方法:

开发EMox-seq,一种使用第三代单分子SMRT测序的无二硫酸盐方法.
采用一种新型的Tet3酶,专门将mDCs氧化为5-carboxycytidine (cadC).
利用基于AI的算法,在SMRT测序过程中精确读取cadC信号.

主要成果:

EMox-seq在没有与二硫酸盐处理相关的DNA降解的情况下成功对 mdC 位置进行测序.
该方法通过Tet3氧化和SMRT测序来确定mdC位置的高准确性.
人工智能算法提高了测序数据的可靠性和可解释性.

结论:

EMox-seq为MDC分析提供了一种良性和高效的替代双硫酸盐测序.
这项技术具有通过精确的基因表达造型来推进早期癌症诊断的巨大潜力.
开发的方法为更好地了解表观遗传学及其在疾病中的作用铺平了道路.

关键词:

表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.这就是SMRTseqq.泰特酶 (tet) 是一种酶.甲基脱氧赛提丁是什么甲基脱氧赛提丁经常性的神经网络.

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