The present invention relates to a 5-formylcytosine specific chemical labeling method and related applications in aspects such as sequencing, detection, imaging, and diagnosis. In the method, a condensation reaction occurs between an active methylene group in an active methylene compound containing a side-chain reactive group and an aldehyde group in 5-formylcytosine or a 1-substituted derivative of 5-formylcytosine, and at the same time an intramolecular reaction occurs between the side-chain reactive group of the active methylene compound and a 4-amino group of cytosine to implement ring closing. By means of the 5-formylcytosine specific chemical labeling method and related compounds of the present invention, detection of the content of 5-formylcytosine in nucleic acid molecules, and specific concentration of 5-formylcytosine-containing nucleic acid samples, and analysis of sequence distribution information of 5-formylcytosine and/or single-base resolution sequence information in nucleic acid molecules and the like may be implemented. The present invention provides various effective research methods in the research fields of epigenetics and nucleic acid biochemistry.
本发明涉及一种5-甲酰
胞嘧啶特异性
化学标记方法及其在测序、检测、成像和诊断等方面的相关应用。在该方法中,活性甲基化合物含有侧链反应基的活性甲基基团与5-甲酰
胞嘧啶或5-甲酰
胞嘧啶的1-取代衍
生物中的醛基之间发生缩合反应,同时,活性甲基化合物的侧链反应基与
胞嘧啶的4-
氨基之间发生分子内反应以实现环闭合。通过本发明的5-甲酰
胞嘧啶特异性
化学标记方法和相关化合物,可以实现核酸分子中5-甲酰
胞嘧啶含量的检测,特异性浓度的5-甲酰
胞嘧啶含量的核酸样品以及5-甲酰
胞嘧啶的序列分布信息和/或核酸分子中单碱基分辨率序列信息的分析等。本发明在表观遗传学和核酸
生物化学研究领域提供了各种有效的研究方法。