预测人类IL1B基因中最有害的非同义SNP:来自生物信息学分析的证据
Ola Abuzaid1, Abeer Babiker Idris2, Semih Yılmaz3,4
1Faculty of Medicine, Erciyes University, Kayseri, Turkey.
BMC genomic data
|June 10, 2024
概括
这项研究在IL1B基因中确定了五种新的有害非同义SNP (nsSNP),这些SNP影响蛋白质结构和功能. 这些nsSNP可能有助于疾病的发病,并为精准医学提供目标.
科学领域:
- 遗传学和生物信息学 遗传学和生物信息学
- 分子生物学分子生物学
- 计算生物学 计算生物学
背景情况:
- 介素-1β (IL1B) 基因多态性与抑郁症,炎症性疾病和感染易感性有关.
- 功能性非同义SNP (nsSNP) 可以改变蛋白质结构和功能,但在IL1B中还没有得到充分的研究.
- 之前的研究集中在IL1B促进器SNP上,忽视了编码区域nsSNP.
研究的目的:
- 研究IL1B基因中有害nsSNP对蛋白质结构和功能的影响.
- 确定可能导致与IL1B功能障碍相关的多因素疾病的特定nsSNP.
主要方法:
- 使用了六个网络服务器 (SIFT,PolyPhen-2,PROVEAN,SNPs&GO,PHD-SNP,PANTHER) 来分析IL1B中的222个误解SNP.
- 使用I-mutant v2.0和MUPro进行蛋白质稳定性分析.
- 使用WebGro进行了50 ns的分子动力学模拟,以评估突变结构行为.
主要成果:
- 确定了五种新的有害的nsSNP (E100K,T240I,S53Y,D128Y,F228S),影响IL1B的结构和功能.
- 预计这五个nsSNP的蛋白质稳定性下降.
- 三种nsSNP (T240I,D128Y,F228S) 被确定为可能引起癌症的.
- 分子动力学模拟显示了突变型与野生型IL1B结构的不同行为.
结论:
- 在IL1B编码区域中的有害nsSNP直接影响蛋白质的功能和结构.
- 这些nsSNP是IL1B相关疾病病原体的潜在贡献者.
- 研究结果支持生物信息学工具对nsSNP预测的有用性,并为药物发现和精准医学提供了途径.
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