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小分子催化除胺使得RNA中N⁶-甲基氨酸的转录组范围的分析成为可能

Pingluan Wang^1,2, Chang Ye^1,2, Michelle Zhao¹

¹Department of Chemistry, The University of Chicago, Chicago, IL, USA.

Nature chemistry

|April 17, 2025

概括

一种新的N-化策略使得DNA和RNA的轻微去胺. 这种方法允许选择性测序腺甲基化,识别N6-甲基氨酸位点.

科学领域:

生物化学生化学
有机化学有机化学
分子生物学分子生物学

背景情况:

传统的除方法使用恶劣的酸性条件,限制了DNA和RNA等生物分子的应用.
核酸的选择性修饰对于理解基因调节和表观遗传修饰至关重要.

研究的目的:

开发一种与DNA和RNA兼容的温和和选择性除方法.
建立一种新的测序技术,用于基底分辨率检测腺甲基化.

主要方法:

采用一种配合碳基有机催化剂和易斯酸的合作催化系统.
使用N-化策略形成碳-中间体,然后重新排列到N-胺.
应用该方法将腺因去胺化为低素,而N6-甲基氨酸保持完整.

主要成果:

在温和条件下对未被替代的DNA/RNA基的选择性去胺.
氨酸被成功地去除了胺,变成了素,而素则被聚合酶识别为氨酸.
N6-甲基氨酸位点对去氨基化具有抗性,保留了它们的腺素特征.

结论:

开发的N-化策略为核酸的选择性除提供了一种温和而有效的方法.
这种方法使得低输入,基本分辨率测序技术用于检测腺甲基化.
化学合作催化辅助的N6-甲基氨酸测序为表观遗传学研究提供了一种新工具.

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