De novo-designed protein binders neutralize snake toxins

IF 41.7 1区 生物学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Nature biotechnology Pub Date : 2025-02-14 DOI:10.1038/s41587-025-02575-2
Anahita Bishop
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全新设计的蛋白质结合剂能中和蛇毒素
三指毒素是响尾蛇毒液的主要成分,在产生抗蛇毒血清的动物中具有有限的免疫原性,导致抗体反应较弱。目前的治疗方法包括多克隆抗体,因此在预防神经毒性和组织坏死方面往往缺乏疗效。在最近发表在《自然》杂志上的一项研究中,Torres等人使用深度学习方法生产了新设计的蛋白质来中和三指毒素。作者采用RoseTTAFold扩散(RFdiffusion)方法设计了不同三指毒素亚类的蛋白结合物。这些蛋白阻止α-神经毒素与烟碱乙酰胆碱受体亚型结合,否则会阻断神经传递并导致瘫痪。在细胞毒素(三指毒素家族中一个重要的功能基团)的情况下,蛋白质结合剂被设计成直接结合毒素,从而防止磷脂膜的不稳定。利用x射线晶体学,作者证明了蛋白质结合物与目标复合物的结构与计算设计相匹配。在体外验证了最佳候选物质后,作者用神经毒素攻击小鼠,并在与粘合剂一起预孵化以及在以1:10(毒素:粘合剂)摩尔比致死性α-神经毒素攻击后15分钟使用粘合剂时显示出完全的保护作用。单独注射粘合剂的小鼠在注射后两周内没有出现负面影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Nature biotechnology
Nature biotechnology 工程技术-生物工程与应用微生物
CiteScore
63.00
自引率
1.70%
发文量
382
审稿时长
3 months
期刊介绍: Nature Biotechnology is a monthly journal that focuses on the science and business of biotechnology. It covers a wide range of topics including technology/methodology advancements in the biological, biomedical, agricultural, and environmental sciences. The journal also explores the commercial, political, ethical, legal, and societal aspects of this research. The journal serves researchers by providing peer-reviewed research papers in the field of biotechnology. It also serves the business community by delivering news about research developments. This approach ensures that both the scientific and business communities are well-informed and able to stay up-to-date on the latest advancements and opportunities in the field. Some key areas of interest in which the journal actively seeks research papers include molecular engineering of nucleic acids and proteins, molecular therapy, large-scale biology, computational biology, regenerative medicine, imaging technology, analytical biotechnology, applied immunology, food and agricultural biotechnology, and environmental biotechnology. In summary, Nature Biotechnology is a comprehensive journal that covers both the scientific and business aspects of biotechnology. It strives to provide researchers with valuable research papers and news while also delivering important scientific advancements to the business community.
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