相关实验视频
Updated: May 12, 2026

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Peptide:MHC Tetramer-based Enrichment of Epitope-specific T cells
Published on: October 22, 2012
基于多阳性对比学习的交叉注意模型用于T细胞受体与抗原结合的预测
Yi Shuai1, Pengcheng Shen2, Xianrui Zhang1
1Peng Cheng Laboratory, Shenzhen, 518066, China.
Computer methods and programs in biomedicine
|May 16, 2025
概括
预测T细胞受体 (TCR) 和-MHC (pMHC) 结合对于适应性免疫非常重要. 我们的ConTCR模型准确预测TCR-pMHC相互作用,推进基于TCR的免疫疗法.
科学领域:
- 免疫学 免疫学 免疫学
- 计算生物学 计算生物学
- 人工智能的人工智能
背景情况:
- T细胞对于适应性免疫至关重要,通过与-MHC (pMHC) 复合体结合的T细胞受体 (TCR) 识别受感染或癌细胞.
- 免疫性TCR-pMHC对的实验性鉴定是资源密集的,并且由于TCR的多样性而具有挑战性.
- 准确预测TCR-pMHC结合对于开发有效的免疫疗法至关重要.
研究的目的:
- 开发一种用于预测-MHC (pMHC) 和T细胞受体 (TCR) 结合的计算工具.
- 提高TCR-pMHC约束性预测的准确性和可解释性.
- 为了利用人工智能来推进基于TCR的免疫疗法.
主要方法:
- 建议用于pMHC-TCR结合预测的TCR的对比交叉注意力模型 (ConTCR).
- 使用预训练的编码器进行pMHC和TCR序列的高级特征嵌入.
- 采用多模式交叉注意力和对比学习来增强特征提取和模型预训练.
主要成果:
- ConTCR有效地捕获了TCR-pMHC相互作用的关键信息,注意力得分提供了可解释性.
- 该模型表现出强大的概括性,用于预测跨多种TCR谱和未见表征的约束特异性.
- 在两个独立的非零射击 (0.849,0.950) 和零射击 (0.830,0.938) 测试集中都获得了高AUC-ROC得分.
结论:
- ConTCR框架为准确的pMHC-TCR绑定预测和模型解释性提供了一个有希望的解决方案.
- 与现有的先进模型相比,ConTCR实现了更高的精度,显示了它的稳定性.
- 这种人工智能工具对推进基于TCR的免疫疗法具有重大前景.
相关概念视频
Cross-reactivity
Overview
Special Features of Adaptive Immunity
The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
Diversity of Antigen Receptors
Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
T Cell Activation and Clonal Selection
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
B Cell Activation and Differentiation
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...

