了解IgG标位和Fc效应函数之间的机制关系:评估多功能性的计算框架
Suzanne K Shoffner-Beck1, Robert M Theisen1, Kade E Wong1
1Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States.
Frontiers in immunology
|October 2, 2025
概括
较高的IgG标位可能会降低抗体依赖细胞功能 (ADCC/ADCP). 一个计算模型揭示了影响免疫反应的复杂相互作用,指导未来的疫苗设计.
科学领域:
- 免疫学 免疫学 免疫学
- 计算生物学 计算生物学
- 疫苗学 疫苗学 疫苗学
背景情况:
- 像ADCC和ADCP这样的抗体依赖细胞功能对于疫苗和传染病免疫至关重要.
- 这些功能涉及IgG抗体,Fc玛受体 (FcγRs) 和抗原之间的复杂相互作用,使实验性解卷具有挑战性.
研究的目的:
- 开发一个预测FcγRIIIa (ADCC) 和FcγRIIa (ADCP) 免疫复合物的计算模型.
- 解剖免疫复合体形成和Fc效应器功能激活的机制.
主要方法:
- 创建了一个普通微分方程模型来预测FcγRIIIa和FcγRIIa免疫复合体.
- 模拟疫苗增强剂 (IgG1,IgG3) 在HIV疫苗试验参与者使用模型.
主要成果:
- 模型预测最大的免疫复合体形成不是在最高的IgG标位;较高的标位可以减少FcγRIIIa/FcγRIIa复合体由于竞争.
- 模拟IgG1和IgG3组合增强剂在ADCC/ADCP复合体中没有显著变化.
- 模拟IgG3提升单独显著降低ADCP (p<0.00001),但增加ADCC.
结论:
- 一个计算框架为Fc效应器功能激活提供了定量洞察力.
- 这种方法可以指导治疗和预防干预的合理设计.
更多相关视频
09:54Assessment of Human Natural Killer Cell Events Driven by FcγRIIIa Engagement in the Presence of Therapeutic Antibodies
Published on: May 22, 2020
3.9K
06:15Characterization of Thymus-dependent and Thymus-independent Immunoglobulin Isotype Responses in Mice Using Enzyme-linked Immunosorbent Assay
Published on: September 7, 2018
9.8K
相关概念视频
01:10Antibody Structure
65.3K
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...
65.3K
01:57Protein Complexes with Interchangeable Parts
2.9K
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...
2.9K