菌体显示的异酸介导循环化使得发现宏环结合剂成为可能
Liwen Bai1, Ting Dan2, Peng Cheng2
1Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, Shaanxi, PR China.
Science advances
|February 6, 2026
概括
这项研究引入了一种新的pH调节的交叉链接器,用于循环菌素显示,增强支架多样性,并使有效的药物发现成为可能. 该方法成功地确定了关键治疗标的强有力的结合剂.
科学领域:
- 生物化学 生物化学
- 药用化学 医学化学
- 药物发现 药物发现 药物发现
背景情况:
- 循环对蛋白质标具有很高的亲和力,可以抑制蛋白质与蛋白质的相互作用.
- 循环的菌体显示是药物发现的强大工具,但有效的循环和支架多样性是有限的.
- 由于菌体上的反应部位受限,现有的方法面临挑战.
研究的目的:
- 开发一种新的交叉链路策略,用于在菌体上有效和多功能循环生成.
- 通过pH调节的循环,扩大循环库中的支架多样性.
- 为了证明这种方法在选择治疗点的高亲和度结合剂时的有用性.
主要方法:
- 合成了一种由异酸盐衍生的交叉链接剂,具有双重反应组 (化物和酸).
- 实现了pH调节的循环:在pH 6.5时的头到侧链和在pH 9.5时的侧链到侧链,形成了氨酸支架.
- 构建了循环图书馆,并对菌体进行了对基D,MDM2和Keap1.1等标的菌体显示选择.
主要成果:
- 这种新型的交叉链接器使得菌体上高效且依赖pH值的酸循环.
- 两种不同的循环化策略 (头到侧链和侧链到侧链) 已成功实施,产生了thiourea支架.
- 选择的循环显示出对治疗的高结合亲和力 (微分子到纳米分子解离常数).
结论:
- 开发的方法显著提高了用于周期性化物菌体显示的支架多样性.
- 这种方法整合了药理学上相关的硫尿素部分,为治疗开发开辟了新的化学空间.
- 该策略具有多功能性和生物相容性,为新型循环疗法铺平了道路.
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