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Updated: May 13, 2025

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将单体抑制剂背后的选择性机制解读为SHP2的酸酶域:来自分子动力学模拟的见解

Yang Wang^1,2, Mingfei Ji³, Linxuan Zhou²

¹Key Laboratory of Protection, Development and Utilization of Medicinal Resources in Liupanshan Area, Ministry of Education, Peptide & Protein Drug Research Center, School of Pharmacy, Ningxia Medical University, Yinchuan, 750004, China.

Physical chemistry chemical physics : PCCP

|April 15, 2025

概括

一个新的单体 (Mb13) 选择性地与SHP2-PTP结合,而不是SHP1-PTP,这是由于更强的分子相互作用. 这一发现通过了解SHP2-PTP抑制机制,指导了针对癌症治疗的开发.

科学领域:

生物化学生物化学
分子生物学分子生物学
结构生物学结构生物学

背景情况:

含有Src-homology 2 (SH2) 域的酸酶2 (SHP2) 在细胞信号传递和癌症进展中至关重要.
SHP2的蛋白氨酸酸酶 (PTP) 域活性驱动瘤性途径,使其成为治疗点.
相关的酸酶SHP1通常起到瘤抑制作用,需要选择性抑制SHP2.

研究的目的:

阐明单体 (Mb13) 与SHP2-PTP的选择性结合背后的分子机制.
为了比较Mb13与SHP2-PTP和SHP1-PTP的结合动力学和稳定性.

主要方法:

在Mb13-SHP2-PTP和Mb13-SHP1-PTP系统上进行了广泛的分子动力学 (MD) 模拟.
分析包括集群分析,主要组件分析 (PCA),免费能源景观评估和具有约束力的免费能源计算.

主要成果:

Mb13 表明与 SHP2-PTP 的结合比与 SHP1-PTP 的结合要稳定得多.
SHP2-Mb13复合体表现出增强的结构稳定性和降低的灵活性.
关键的SHP2-PTP残留物和Mb13之间的特定,强大的相互作用被确定为选择性结合的驱动因素.

结论:

由Mb13对SHP2-PTP的选择性抑制是由特定的稳定分子相互作用驱动的.
这种关于结合动态的详细理解为设计用于癌症治疗的向SHP2抑制剂提供了基础.

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