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使用点击合IgG-蛋白A/G系统进行DNA修饰的普遍丰富和测序

Junqiu Zhai¹, Zhiquan Liu¹, Xue Zhang²

¹Key Laboratory of Chinese Medicinal Resource from Lingnan, Ministry of Education, School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, P. R. China.

Analytical chemistry

|February 16, 2026

概括

一种名为Click-IP-Seq的新方法有效丰富了像8-oxo-7,8-dihydroguanine (8-oxo-dG) 和5-hydroxymethylcytosine (5hmC) 这样的改性核酸. 这种具有成本效益的技术为表观遗传研究和诊断提供了多功能替代方案.

科学领域:

分子生物学分子生物学
表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.
生物化学生物化学

背景情况:

核酸丰富对于研究表观遗传修饰和疾病生物标志物至关重要.
目前的缩方法缺乏特异性,多功能性,而且成本高昂.

研究的目的:

开发一种通用,成本高效和多功能的核酸缩战略.
为了实现DNA修饰的特定捕获和全基因组映射.

主要方法:

开发了使用蛋白A/G和DBCO修饰的IgG进行向核酸捕获的"Click-IP-Seq".
使用的无铜应变促进的亚酸循环添加剂 (SPAAC).
应用了丰富8-oxo-7,8-dihydroguanine (8-oxo-dG) 和5-hydroxymethylcytosine (5hmC) 的方法.

主要成果:

在模型DNA系统中成功丰富了8-oxo-dG和5hmC.
在培养细胞和人体组织中绘制了8-oxo-dG的全基因组分布图.
在人类结直肠癌组织中对8-oxo-dG进行了全面的分析.

结论:

点击-IP-Seq为DNA丰富提供了对生物-链维丁系统的成本效益和模块化替代方案.
该方法适用于基本表观遗传研究和下一代分子诊断.
通过精确地绘制氧化性损伤的地图,可以对DNA损伤和修复机制进行新的洞察.

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