人类S1PR1基因中有害的非同义SNP的in-silico表征揭示了结构不稳定性和改变的联结体亲和力
Sangram Biswas1, Dipankar Sardar1, Md Arju Hossain2
1Department of Biotechnology, Bangladesh Agricultural University, Mymensingh, Bangladesh.
PloS one
|February 2, 2026
概括
这项研究确定了破坏性S1PR1基因变异 (nsSNP),影响受体功能和药物反应. 这些高风险突变可能会影响自身免疫性疾病的易感性和治疗结果.
科学领域:
- 遗传学和分子生物学
- 药理学和药物发现
- 免疫学和自身免疫性疾病
背景情况:
- S1PR1受体对于免疫细胞的贩运和信号传递至关重要,使其成为自身免疫性疾病的治疗点.
- 了解S1PR1的遗传变异对于预测药物反应和疾病进展至关重要.
研究的目的:
- 在S1PR1基因中计算识别有害的非同义单核酸多态 (nsSNP).
- 评估这些nsSNP对S1PR1蛋白的功能,稳定性和连接体结合的影响.
主要方法:
- 在S1PR1基因中分析了3,259个SNP,使用多种计算工具优先考虑nsSNP.
- 使用了结构建模,进化保护分析,分子对接和分子动力学模拟.
- 对天然激动剂 (S1P,FTY720P) 和对抗剂的结合 afinities 的评估.
主要成果:
- 确定了25种有害的nsSNP,其中R120P,F125S,C184Y,Y198C和L275P被突出显示为最有害的.
- 这些nsSNP聚集在7-TM域中,破坏受体的稳定性,折叠和二硫化物结合.
- R120P和F125S突变显著削弱了与S1P和FTY720P的结合,影响了信号通路.
结论:
- 在S1PR1中高风险的nsSNP可能会损害受体功能并改变药物治疗反应.
- 这些发现有助于了解疾病机制,并制定针对自身免疫性疾病的精准医学策略.
- 识别的nsSNP提供了关于S1PR1相关疾病易感性和药物疗效的见解.
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