对S1PR1SNP的计算分析揭示了与多发性硬化症治疗相关的药物结合模式
Katarina Kores1, Samo Lešnik1,2, Urban Bren1,2,3
1Laboratory of Physical Chemistry and Chemical Thermodynamics, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, SI-2000 Maribor, Slovenia.
研究单核酸多态性 (SNPs) 在神素-1-酸盐受体1 (S1PR1) 中,揭示了这些遗传变异如何影响多发性硬化症药物疗效. 这项研究通过预测基于特定S1PR1突变的药物反应来指导MS患者的个性化医疗.
科学领域:
- 药物基因组学 药物基因组学
- 计算化学的计算化学
- 神经免疫学 神经免疫学
背景情况:
- 多发性硬化症 (MS) 是一种中枢神经系统自身免疫性疾病,发病率不断上升,缺乏治疗方法,但可以通过疾病修饰性治疗 (DMT) 进行管理.
- 氨酸-1-酸受体 (S1PRs) 是MS治疗的关键标,影响免疫反应和中枢神经系统功能.
- 在S1PR1活性位点中的非同义单核酸多态 (SNP) 可能会改变药物结合和治疗效果.
研究的目的:
- 研究特定的S1PR1SNP对内源性配体和MS向药物的结合亲缘关系的影响.
- 预测S1PR1中的遗传变异如何影响当前和未来多发性硬化症疗法的疗效.
- 在多发性硬化症治疗中为个性化医疗方法奠定基础.
主要方法:
- 利用广泛的分子动力学模拟和线性相互作用能量 (LIE) 计算来评估结合亲缘关系.
- 优化了LIE方法参数,使用实验确定的IC50值来确定准确度.
- 计算了S1P和突变的S1PR1的结合自由能量,以验证计算方法.
主要成果:
- 在不同的S1PR1突变和药物相互作用中,结合自由能量的显著变化得到证明.
- 确定了对具有F205^5.42^L S1PR1突变的siponimod最有利的结合亲和力 (-16.7 kcal/mol).
- 观察到对ozanimod与野生类型S1PR1.1的最不有利的结合亲和力 (-8.2kcal/mol).
结论:
- 成功地描述了MS药物与S1PR1SNP有关的差异性结合模式,相互作用和亲缘关系.
- 突出了针对个体S1PR1遗传特征量身定制的个性化疗法的潜力.
- 提供了一个计算框架,以基于受体多态度来预测MS中的药物反应.
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