以人工智能增强的基于物理的对接,用于抗体-抗原复合体预测
Francis Gaudreault1, Traian Sulea1,2, Christopher R Corbeil1,3
1Human Health Therapeutics Research Centre, National Research Council Canada, Montreal, Quebec H4P 2R2, Canada.
Bioinformatics (Oxford, England)
|March 26, 2025
概括
人工智能增强对接改善了抗体-抗原结构预测,特别是在高质量的模型中. 集体质量和模型优先级是成功抗体设计和表位图绘制的关键.
科学领域:
- 结构生物学是结构生物学.
- 计算化学是一种计算化学.
- 免疫信息学是指免疫信息学.
背景情况:
- 预测抗体-抗原复杂结构对于治疗性抗体设计至关重要,但仍然具有挑战性.
- 人工智能 (AI) 具有先进的抗体和抗原结构预测.
- 高质量的模型对于有效的抗体设计至关重要.
研究的目的:
- 评估基于AI增强的基于物理的对接管道,用于抗体-抗原结构预测.
- 将AI增强的对接性能与AlphaFold2和Boltz-1进行比较.
- 为表位图绘制和抗体工程应用定义标准.
主要方法:
- 利用人工智能引导的抗体建模来生成多样化的互补性决定区域 (CDR) 组合.
- 集成集成到一个AlphaFold2-rescored对接管道 (基于AI增强物理的对接).
- 将对接性能与AlphaFold2和Boltz-1进行比较,用于表位图和工程.
主要成果:
- 集体质量和模型优先级是成功对接的关键.
- 人工智能增强的对接性能优于AlphaFold2,特别是在高质量的模型要求方面.
- 与Boltz-1相比,性能改善不那么明显;然而,AlphaFold3显示出更好的结果.
- 基于物理的对接成功取决于CDR-H3循环长度,定义其适用范围.
结论:
- 基于物理的AI增强对接为抗体-抗原结构预测提供了优势,特别是当需要高质量的模型时.
- 该方法的性能受集体特征和CDR-H3循环长度的影响.
- 与较新的AI工具相比,这种方法在定义的适用范围内提供了具有竞争力的选择.
相关概念视频
01:10Antibody Structure
Overview
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
01:20Immunoprecipitation
Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
01:26Antibody Actions
Antibodies, or immunoglobulins, are critical players in the immune system's arsenal against invading pathogens. Produced by B cells and plasma cells, their primary role is to detect and bind to specific antigens, molecules found on the surface of pathogens like bacteria or viruses. Beyond antigen recognition, antibodies perform several vital functions that contribute to immune defense.
Neutralization
Antibodies can bind to pathogens, preventing them from infecting host cells. This process...
Neutralization
Antibodies can bind to pathogens, preventing them from infecting host cells. This process...