针对性治疗的大量并行de novo蛋白质设计
Aaron Chevalier1,2, Daniel-Adriano Silva1,2, Gabriel J Rocklin1,2
1Department of Biochemistry, University of Washington, Seattle, Washington 98195, USA.
Nature
|September 28, 2017
概括
这项研究引入了一种新的计算和实验方法来设计微型蛋白质结合剂. 这些稳定,定型的蛋白质对治疗点具有很高的亲和力,并提供强大的抗流感保护.
科学领域:
- 生物化学
- 蛋白质工程
- 免疫学
背景情况:
- 新型蛋白质设计旨在为治疗应用创造定制的蛋白质.
- 微型蛋白质比传统的抗体具有潜在的优势.
研究的目的:
- 开发和验证设计,制造和选微型蛋白质结合剂的大量并行方法.
- 创建新的微型蛋白质结合剂以向流感血素和肉毒神经毒素B.
- 使用大规模实验数据评估和改进计算蛋白质设计模型.
主要方法:
- 集成的大规模计算设计与寡核酸合成,酵母显示选和下一代测序.
- 设计和测试了22660个小蛋白 (37-43个残留物) 和6286个对照序列.
- 使用结合式和非结合式集合的比较分析来完善计算模型.
主要成果:
- 确定了2618种高亲和度的微型蛋白质结合剂.
- 生物物理特征显示出异常稳定性,在暴露于热量后保持活性.
- 微型蛋白质设计显示出最小的免疫性,并提供了有效的预防和治疗流感保护.
结论:
- 开发的大规模并行方法对于设计功能性小蛋白质结合剂是有效的.
- 与抗体相比,这些新型迷你蛋白具有更高的稳定性和更低的免疫性.
- 设计的微型蛋白质在治疗和预防流感方面具有显著的治疗潜力.
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