可能由JunB/D介导的KLHL17表达的等位基因效应是 chr1p36.3333 的 PDAC GWAS 信号的基础
Katelyn E Connelly1, Katherine Hullin1, Ehssan Abdolalizadeh1
1Laboratory of Translational Genomics, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA.
medRxiv : the preprint server for health sciences
|October 7, 2024
概括
常见的遗传变异影响胰腺癌风险. 这项研究确定了一种特定的变异 (rs13303160) 影响KLHL17基因表达,可能影响炎症和胰腺管腺癌 (PDAC) 的发展.
科学领域:
- 遗传学 遗传学 是一个
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 胰腺管道腺癌 (PDAC) 是癌症死亡的一个重要原因.
- 既常见又罕见的生殖系变异是已知的PDAC易感性的贡献者.
- 通过GWAS识别的1p36.33的常见PDAC风险信号需要精细映射和功能特征.
研究的目的:
- 在1p36.33.3.3处细化地图并从功能上描述一个常见的PDAC风险信号.
- 为了确定特定的遗传变异及其对PDAC风险信号负责的目标基因.
- 阐明这种变种影响PDAC风险的分子机制.
主要方法:
- 使用SNP数据对1p36.33 PDAC风险位置进行精细映射.
- 在体外和体内功能测试以评估等位基因偏好基因调节活性和蛋白质结合 (JunB,JunD).
- 表达量性特征位置 (eQTL) 分析以识别目标基因.
- 在PDAC细胞中进行蛋白质组分析.
- 在使用GTExv8胰腺数据的基因表达差异分析中.
主要成果:
- 一种特定的单核酸多态 (SNP),rs13303160,被确定为可能的因果变异.
- rs13303160表现出异位基因偏好基因调节活性和转录因子JunB和JunD的结合.
- eQTL分析表明,KLHL17是与风险信号相关的目标基因.
- KLHL17被确定为PDAC细胞中Cullin-E3泛素酶复合体的一部分.
- 较低的KLHL17表达与体中的促炎途径有关.
结论:
- 在1p36.33的共同PDAC风险信号可能由SNP rs13303160调节KLHL17表达.
- KLHL17,作为E3泛素酶复合体的一部分,可以通过调节炎症来影响PDAC风险.
- 拟议的机制涉及KLHL17的招募和促进促炎蛋白的降解,从而减轻PDAC风险.
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