通过Dolphynyn的表位优先设置,对大型抗原空间进行有效编码
Anna-Maria Liebhoff1,2, Thiagarajan Venkataraman2, William R Morgenlander2
1Department of Computer Science, Johns Hopkins University, Baltimore, MD, USA.
Nature communications
|February 21, 2024
概括
研究人员使用菌体免疫沉测序 (PhIP-Seq) 探索了对肠道病毒的抗体反应. 一种新的机器学习方法Dolphyn提高了类库的效率,揭示了对肠道细菌感染菌体的免疫反应.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 生物信息学是一种生物信息学.
背景情况:
- 肠道微生物组在宿主免疫力中起着至关重要的作用.
- 对肠道菌体,感染细菌的病毒的抗体反应是肠道免疫轴的一个未被探索的区域.
- 了解菌体与宿主之间的相互作用对于肠道健康至关重要.
研究的目的:
- 使用菌体免疫沉测序 (PhIP-Seq) 分析肠道菌体的抗体反应.
- 开发一种有效的方法来从大型蛋白质集中选择免疫性,用于PhIP-Seq库建设.
- 为了研究抗体对肠道细菌菌体的反应的范围和特异性.
主要方法:
- 开发Dolphyn,一种基于机器学习的方法,用于选和表位接以压缩蛋白质.
- 菌体免疫沉测序 (PhIP-Seq) 的应用,使用Delphyn设计的库来分析抗体反应.
- 对来自人类肠道细菌蛋白质的基的抗体反应性的分析.
主要成果:
- 与传统的制方法相比,Dolphyn显著压缩了库 (78%的减少).
- Dolphyn可以将抗体反应性的鉴定率从10%提高到31%.
- 该研究发现了对感染肠道细菌的菌体的显著抗体反应,特别是感染大肠杆菌的Myoviridae.
结论:
- 免疫系统对常见的人类肠道细菌菌产生可检测的抗体反应.
- Dolphyn使成本效益高且全面的PhIP-Seq图书馆设计成为可能,促进了对肠-免疫轴的更广泛研究.
- 这项工作为研究肠道菌对宿主健康的免疫影响提供了基础.
相关概念视频
01:26Antigens Involved in Adaptive Immunity
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An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
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00:42Cross-reactivity
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