富含proline的抗微生物的序列功能映射
Jonathan Collins1, Adam McConnell1, Zachary D Schmitz2
1Biomedical Engineering, Minneapolis, MN 55455.
bioRxiv : the preprint server for biology
|February 14, 2024
概括
抗微生物 (AMP) 通过序列活动映射显示了功能改善. 这种高通量技术揭示了提高抗生素药物发现功效和特异性的关键突变.
科学领域:
- 生物化学和分子生物学
- 微生物学 微生物学
- 药物发现 药物发现 药物发现
背景情况:
- 抗微生物 (AMP) 对于天生的免疫力和潜在的治疗作用至关重要.
- 由于复杂的结构-活动关系,设计有效的AMP具有挑战性.
- 目前用于AMP发现的现有方法在吞吐量和范围上是有限的.
研究的目的:
- 通过耗尽 (SAMP-Dep) 应用AMP的序列活性映射到富含普罗林的AMP.
- 描述metalnikowin 1 (Met) 和apidaecin 1b (Api) 的序列活动场景.
- 评估SAMP-Dep平台的可复制性和实用性.
主要方法:
- 使用SAMP-Dep技术对富含proline的AMP,Met和Api进行了研究.
- 为大约26,000个 (Met) 和34,000个 (Api) 突变物生成和分析了序列活动图.
- 通过复制实验和同名遗传变异验证了SAMP-Dep的可复制性.
主要成果:
- 为Met和Api实现了强大的自我抑制,具有高可重现性 (r > 0.90).
- 确定了Met和Api的独特突变配置文件,在相反的末端具有有益突变.
- 揭示了PRP动机内的差异性普罗林耐受性,并观察到显著的表观症.
结论:
- SAMP-Dep提供了AMP序列活动空间的强大,高通量表征.
- 生成的AMP变体具有增强的功效和特异性对抗格拉姆阴性细菌.
- 证明了平台对AMP的基本洞察力和治疗工程的实用性.
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