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在人类PDCD1基因中误解变异的功能和结构分析

Hanâ Baba¹, Meryem Bouqdayr², Anass Abbad³

¹Biotechnology R&D Unit, Institut Pasteur du Maroc, Casablanca, Morocco.

Journal of public health in Africa

|July 4, 2025

概括

这项研究调查了编程细胞死亡1 (PDCD1) 基因变异,该研究发现D117V单核酸多态 (SNP) 尽管有计算预测,但其功能影响可能有限. 进一步验证对于治疗见解至关重要.

科学领域:

免疫学免疫学免疫学
遗传学是一个遗传学.
计算生物学计算生物学

背景情况:

编程死亡-1 (PD-1) 是一个关键的免疫检查点受体,调节T细胞反应.
异常的T细胞功能与各种疾病有关,使PD-1通路调节成为治疗目标.

研究的目的:

评估人类PDCD1基因中错误单核酸多态 (SNPs) 的功能和结构后果.
用in silico方法评估PDCD1变异引起的病原性和稳定性变化.

主要方法:

从dbSNP收集了PDCD1基因SNP数据.
使用多种生物信息学工具 (PredictSNP1.0套件,ConSurf,MUPro,I-Mutant 2.0,MutPred2) 进行变种预测和稳定性分析.
进行了100ns分子动力学 (MD) 模拟,以分析PD-1变体的结构动力学.

主要成果:

生物信息学预测发现D117V和W286G是潜在有害的SNP.
由于在不利的结构区域中不可靠的建模,W286G被排除在外.
对D117V变种的MD模拟显示稳定性或灵活性参数 (RMSD,RMSF,Rg,SASA,结) 没有显著变化.

结论:

生物信息学工具预测D117V变种 (rs772130993) 是有害的,基于分子动力学模拟,其功能影响最小.
将计算预测与实验验证相结合,对于理解遗传变异的治疗潜力至关重要.

关键词:

生物信息学是一种生物信息学.在体内进行分析.分子动力学 (MD) 模拟.非同义的单核酸多态 (nsSNP)编程死亡-1 (PD-1) 是一个类型.

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