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通过动态共价化学选择性蛋白质 (后) 修饰:自我激活的S_NAr反应

Ferran Esteve¹, Jean-Louis Schmitt¹, Sergii Kolodych²

¹Laboratoire de Chimie Supramoléculaire, Institut de Science et d'Ingénierie Supramoléculaires (ISIS), Université de Strasbourg, Strasbourg 67000, France.

Journal of the American Chemical Society

|January 2, 2025

概括

动态共价化学 (DCvC) 通过形成一个 iminium 键来加速生物结合反应. 这种新的"标记和修改"策略提高了抗体功能化产量和选择性.

科学领域:

有机化学
生物结合化学
化学生物学

背景情况:

核性芳香替代 (S_NAr) 反应对于分子功能化至关重要.
在生物结合中实现高产量和选择性仍然是一个挑战.
动态共价化学 (DCvC) 为分子组装和修改提供了多功能工具.

研究的目的:

开发一种用于加速S_NAr反应的新型预定目标和激活单元.
通过iminium形成来研究甲基衍生物的自我激活机制.
应用于选择性抗体功能化和后修改的这一策略.

主要方法:

使用动态共价化学 (DCvC) 来创建预定目标和激活单元.
对基衍生物的S_NAr反应进行了研究.
应用了IgG1和IgG4抗体功能化的开发策略.
通过与化物进行动态共价交换进行后功能化.

主要成果:

在S_NAr反应的显著加速过程中,
Salicylaldehyde衍生物的自我激活通过邻近的氨酸残留物增强了反应速度.
在抗体功能化方面观察到增加的生物结合产量和出色的化疗选择性.
用IgG4抗体实现了微环境选择性,因为链区域的lysine残留量较少.
已证明修改后抗体的成功功能化.

结论:

基于DCvC的预定位和激活单元显著增强S_NAr生物结合.
免疫键形成提供了自我激活机制,提高了反应效率.
这一策略允许选择性抗体功能化,并可调节产品分布.
已经发展的
标记和修改
这种方法代表了生物结合的强大新工具.

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