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在HLA-G 3'UTR区域的多态性和COVID-19疾病严重程度之间的关系

Ahmed Alyami¹, Fawziya B Barnawi¹, Steve Christmas²

¹Pathology and Clinical Laboratory Medicine Administration, King Fahad Medical City, Riyadh Second Health Cluster, Riyadh, Saudi Arabia.

Biochemical genetics

|November 4, 2024

概括

人类白细胞抗原-G (HLA-G) 基因变异和可溶性HLA-G (sHLA-G) 水平与COVID-19易感性有关. 特定的HLA-G多态,特别是14-bp插入/删除,与症状发展和疾病严重程度有显著的相关性.

科学领域:

免疫遗传学免疫遗传学
分子生物学分子生物学
病毒学病毒学

背景情况:

人类白细胞抗原-G (HLA-G) 在免疫调节和母胎耐受性方面发挥着至关重要的作用.
HLA-G基因的遗传变异,特别是其3'未翻译区域 (3' UTR) 的遗传变异,可以影响基因表达和免疫反应.
了解HLA-G和SARS-CoV-2感染之间的关联对于破译宿主-病原体相互作用和疾病结果至关重要.

研究的目的:

研究特定的HLA-G基因多态和可溶性HLA-G (sHLA-G) 水平与对SARS-CoV-2感染的易感性之间的关系.
为了识别与COVID-19症状的发展相关的HLA-G变体和类型.
探索血sHLA-G水平与COVID-19状态之间的相关性.

主要方法:

病例控制研究涉及65名COVID-19患者和67名健康对照.
使用桑格测序进行关键HLA-G 3' UTR功能多态的基因定型 (例如,14-bp Ins/Del,+3003C/T,+3196C/G).
通过ELISA量化可溶性HLA-G (sHLA-G) 血水平.

主要成果:

在HLA-G 3' UTR中,14-bp插入/删除 (Ins/Del) 多态性与多重遗传模型 (p < 0.001) 中的COVID-19症状发展密切相关.
(+3196C/G) 多态体表现出对COVID-19的保护作用.
三种特定的单元类型 (UTR-1,UTR-3,UTR-5) 与COVID-19症状显著相关 (p <0.05),而COVID-19患者的血清sHLA-G水平明显高于对照组 (p <0.001).

结论:

在调节性3' UTR区域的HLA-G基因多态性显著影响宿主对SARS-CoV-2感染的免疫反应.
已识别的HLA-G变异和单元类型可能作为COVID-19易感性和严重性的潜在生物标志物.
对这些多形态的功能影响的进一步研究可以帮助识别有风险的个体并制定有针对性的治疗策略.

关键词:

3UTR多态的多态化 COVID-19的遗传倾向是COVID-19的遗传倾向.随机类型的不同类型免疫检查站检查站这就是SHLA-G.沙特阿拉伯沙特阿拉伯沙特阿拉伯

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