通过新设计揭示了T细胞受体特异性景观
Gian Marco Visani1, Michael N Pun2, Anastasia A Minervina3
1Paul G. Allen School of Computer Science and Engineering, University of Washington, Seattle, WA 98195.
概括
这项研究引入了一种计算方法,用于预测MHC分子上的T细胞受体 (TCR) 与的相互作用,并设计免疫性. 该方法准确预测TCR-pMHC结合和T细胞活性,有助于疫苗和工程T细胞治疗设计.
科学领域:
- 免疫学 免疫学 免疫学
- 计算生物学 计算生物学
- 机器学习 机器学习
背景情况:
- T细胞对于适应性免疫至关重要,通过T细胞受体 (TCR) - -MHC相互作用调解病原体特异性反应.
- 由于功能性T细胞反应率数据有限,预测这些相互作用具有挑战性.
研究的目的:
- 开发一种计算方法,用于预测与-MHC I类 (pMHC-I) 综合体的TCR相互作用.
- 为特定的TCR-MHC复合体设计免疫性.
- 提供有关T细胞特异性的见解,并促进免疫疗法的设计.
主要方法:
- 利用基于蛋白质宇宙训练的基于结构的机器学习模型HERMES来预测氨基酸偏好.
- 应用该模型来预测TCR-pMHC结合亲缘关系和T细胞活动,而无需对TCR-pMHC数据进行直接训练.
- 开发了一个计算协议,用于新的免疫原性设计.
主要成果:
- 与TCR-pMHC结合和T细胞活性预测的实验数据达到了0.72的相关性.
- 经过实验验证的de novo设计的,显示T细胞激活在最多50%的病例中,最多5次序替代.
- 量化了各种TCR-MHC复合体的体识别景观多样性.
结论:
- 开发的计算方法准确地预测了TCR-pMHC相互作用,并使免疫性的新设计成为可能.
- 该框架为免疫性和新抗原设计,T细胞特异性评估提供了一个平台,并为工程T细胞疗法和疫苗提供了信息.
相关概念视频
Diversity of Antigen Receptors
1.4K
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...
1.4K
T Cell Activation and Clonal Selection
14.7K
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...
14.7K


