利用共价性稳定细胞-细胞"诱导的近距离"的三元复合体形成
Karolina Krygier1, Anjalee N Wijetunge1, Arthur Srayeddin1
1Center for Discovery in Cancer Research, Department of Biochemistry and Biomedical Sciences, Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario, Canada, L8S 4L8.
ACS chemical biology
|September 26, 2024
概括
协同免疫招募剂 (CIRs) 通过形成稳定的三元复合体来增强药物疗效,改善向细胞杀死. 这种方法利用不可逆转的共价键来稳定相互作用,在基于免疫的疗法中优于非共价方法.
科学领域:
- 翻译化学生物学化学生物学
- 合成方式的模式.
- 事件驱动药理学事件驱动药理学
背景情况:
- 像PROTAC和ARM这样的异构功能分子通过可逆三元复合体诱导向蛋白质降解或免疫清除.
- 疗效的关键参数包括亲和力,居住时间和周转率,这些常常受到诱导近距离系统中破坏稳定力的限制.
- 共同的方法,如共同免疫招募器 (CIRs),已被开发来动力稳定这些复合体.
研究的目的:
- 用CIR策略在抗体招募和工程T细胞模型中解决诱导细胞-细胞邻近性的挑战.
- 与非共价类型相比,研究共价仿真体的机制和功能增强.
主要方法:
- 应用了CIR策略,将抗体招募分子 (ARM) 转化为共价仿真体,以对瘤细胞进行不可逆转的抗体招募.
- 利用电预组织和动力有效度来选择性对血清抗体的共价参与.
- 研究了与基/碳水化合物配体和SuFEx电友的类似CIR模式,并研究了用特定受体工程的T细胞.
主要成果:
- 在免疫试验中,共价基马体表现出比非共价ARM显著的功能增强.
- 增强的疗效归因于三元复合物的动力稳定性增加,而不仅仅是度.
- 与非共价相互作用相比,T细胞中的共价受体参与独特地强制下游激活信号.
结论:
- 协同免疫招募器 (CIRs) 提供了一种克服破坏稳定力的策略,并增强诱导的近距离复合物的动力稳定性.
- 除了氨酸残留物之外,共价接触提供了一个强大的机制,用于改善细胞-细胞近距离应用中的治疗结果.
- 对共价化学/双功能分子的进一步优化对各种基于细胞-细胞近距离的治疗应用具有前景.
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