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在癌症免疫治疗中,通过相互作用能量计算和残留相关性分析,合理化工程T细胞受体的增强亲和力

Mario Frezzini¹, Daniele Narzi²

¹Department of Information Engineering, Computer Science and Mathematics, University of L'aquila, L'Aquila, Italy.

|August 1, 2025

概括

工程T细胞受体 (TCRs) 在癌症免疫疗法方面表现有前途. 计算分析显示,在工程TCR中增加的结合亲和力来自复杂的分子相互作用,而不仅仅是单个突变,指导未来的治疗设计.

科学领域:

免疫学免疫学免疫学
计算生物学计算生物学
生物化学生物化学

背景情况:

T细胞受体 (TCR) 工程是癌症免疫疗法的关键进步,特别是在固体瘤中.
挑战仍然存在,包括低响应率,非目标毒性和免疫抑制瘤微环境.
了解TCR-主要组织相容复合体 (MHC) 相互作用对于设计更安全,更有效的疗法至关重要.

研究的目的:

与其自然对应物 (c728) 相比,阐明工程TCR (c796) 的结合亲和力增加六倍的分子基础.
研究TCRβCDR1区域中单一突变的作用及其对TCR--MHC相互作用的影响.
证明计算方法在指导癌症免疫治疗的合理TCR设计中的实用性.

主要方法:

分子动力学 (MD) 模拟.分子动力学 (MD) 模拟.
分子力学与Poisson-Boltzmann和表面积溶解 (MM/PBSA) 的结合能计算.
自由能源扰乱 (FEP) 的计算.
特定残留物的能量分解和相关性分析.

主要成果:

工程TCR的增强结合亲和力不仅仅是由于特定的突变.
亲和力增强是靠近位和远位残留物的动态相互作用而产生的,而这些残留物受到全性通路的影响.
计算结果与实验数据一致,突出了结构灵活性的重要性.

结论:

TCR-pMHC相互作用是复杂的,涉及到动态的全沟通.
计算方法对于剖析这些相互作用和指导工程TCR的合理设计是有价值的.
这项研究为开发更有效和更具体的基于TCR的癌症免疫疗法提供了框架.

关键词:

T细胞受体受体的 T 细胞受体.收养的T细胞疗法在全性通路上.结合性亲和力是一种结合性亲和力.主要的组织相容性复杂.分子动力学模拟,分子动力学模拟

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