通过使用计算机辅助设计修改蛋白界面来预测IL-18/IL-18R结合的改善
Napat Prompat1,2, Chariya Peeyatu1, Jirakrit Saetang3
1Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Songkhla 90110, Thailand.
Biomolecules
|October 29, 2025
概括
使用计算方法来设计突变,以增强用于癌症免疫治疗的INTERLEUKIN-18 (IL-18) 活性. 这些设计突变显示出改善IL-18的潜力.
科学领域:
- 生物化学和分子生物学
- 免疫学 免疫学 免疫学
- 计算生物学 计算生物学
背景情况:
- 细胞因子免疫疗法,特别是使用INTERLEUKIN-18 (IL-18) 是一个有前途的癌症治疗策略.
- IL-18通过增强自然杀手 (NK) 和细胞毒性T细胞活性来增强抗瘤反应.
- 优化IL-18与其受体的相互作用是提高其治疗功效的关键.
研究的目的:
- 通过计算设计和预测增加IL-18生物活性的突变.
- 研究特定突变对IL-18受体结合和稳定性的影响.
- 探索计算机辅助设计方法,以开发更强大的基于IL-18的癌症疗法.
主要方法:
- 基于结构的计算能量计算被用来识别潜在的突变.
- 用分子动力学 (MD) 模拟来评估突变IL-18.的稳定性和形状变化.
- 分析的重点是关键蛋白质区域的静电相互作用和灵活性.
主要成果:
- 预计四种候选突变 (E6M,E6M+N111S+R131G,E6M+K129M+R131G,E6M+N111S+K129M+R131G) 可以增强IL-18受体的结合和稳定性.
- MD模拟表明,突变不会影响蛋白质的整体稳定性,但会增加β8-β9毛环的灵活性.
- 突变IL-18的动态行为表明了改善生物活动的潜力.
结论:
- 计算机辅助设计是提高IL-18细胞因子功能的有效策略.
- 鉴定的突变为开发用于癌症免疫治疗的改进IL-18变体提供了基础.
- 需要对整个IL-18受体综合体进行进一步的模拟,以充分验证这些发现.
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