一个新的IL32与结核病的遗传关联
Anuradha Gautam1, Chandrika Bhattacharyya1, Ahana Dasgupta2
1BRIC-National Institute of Biomedical Genomics (NIBMG), Kalyani, 741251, West Bengal, India.
Cytokine
|October 23, 2024
概括
在IL32的遗传变异影响结核病的风险. 这种rs9927163(T) 基因基因通过影响IL32δ表达来增加对结核病的易感性,而IL32δ表达是一种不太具有炎症性异型.
科学领域:
- 免疫遗传学 免疫遗传学
- 分子生物学分子生物学
- 结核病研究 结核病研究
背景情况:
- 介素-32 (IL32) 是一种细胞内细胞因子,在炎症中具有多种作用.
- 不同的IL32异型 (α,β,γ,δ) 呈现出不同的促炎和抗炎活性.
- 对结核病 (TB) 易感性的遗传贡献尚未完全理解.
研究的目的:
- 调查IL32的遗传变异及其异型及其对结核病的易感性之间的联系.
- 探索相关遗传变异对IL32基因调节和表达的功能影响.
主要方法:
- 案例-家庭联系人协会研究设计.
- 针对IL32基因区域的向测序和TaqMan基因型鉴定用于变异验证.
- 使用GTExPortal,RegulomeDB和ENCODE数据对监管要素的分析.
- 通过RT-PCR评估IL32异型表达和使用双化酶试验的增强剂活性.
主要成果:
- 内部变异rs9927163 ((G/T) 与肺结核有显著的关联,T等位基因赋予了风险 (OR=2.3,p=0.03).
- rs9927163作为IL32和BICDL2的表达定量特征位点 (eQTL),并中断AP-1结合位点.
- 风险基因型 (TT) 在刺激结核病抗原 (ESAT6 / CFP10) 时显示出较少的益炎性IL32δ异型的表达增加.
结论:
- rs9927163变种影响IL32基因调节和表达,影响结核病易感性.
- 在具有TT基因型的个体中增加IL32δ异型的表达可能会导致结核病风险.
- 在IL32的遗传变异在宿主对结核病的反应中起作用.
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