蛋白质与蛋白质相互作用塑造了遗传变异对蛋白质表达和复杂特征的跨调节性影响
Jinghui Li1, Yang I Li1,2,3, Xuanyao Liu4,5
1Department of Medicine, Section of Genetic Medicine, University of Chicago, Chicago, IL, USA.
Nature genetics
|January 7, 2026
概括
与复杂特征相关的遗传变异通常会影响基因调节. 这项研究表明,参与蛋白质-蛋白质相互作用 (PPI) 的跨蛋白质定量特征位点 (pQTLs) 有助于解释全基因组关联研究 (GWAS) 位点并确定治疗点.
科学领域:
- 遗传学 遗传学 是一个
- 系统生物学 系统生物学
- 生物信息学是一种生物信息学.
背景情况:
- 影响复杂特征的遗传变异主要影响基因调节.
- 将分子定量特征位点 (QTLs) 与生物功能联系起来仍然具有挑战性.
- 蛋白质QTLs (pQTLs) 提供了对蛋白质组遗传调节的见解.
研究的目的:
- 调查跨pQTLs在解释全基因组关联研究 (GWAS) 位点中的作用.
- 探索蛋白质与蛋白质相互作用 (PPI) 在跨调节中的参与.
- 为了确定复杂特征的潜在治疗点.
主要方法:
- 重新分析现有的pQTL地图,以识别含有trans-pQTL但没有cis-pQTL的基因.
- 研究了跨pQTLs,标蛋白和PPI之间的关联.
- 使用PPI注释来指导trans-pQTL映射,控制血细胞组成.
- 在27个复杂的特征中,与GWAS位点共定位的识别过pQTL.
主要成果:
- 含有trans-pQTL,但没有cis-pQTL的基因受到选择性约束,并且对GWAS loci解释具有信息性.
- 跨pQTL及其标蛋白经常参与PPI,在PPI接口进行缩.
- 确定了17662个影响961个PPI集群的跨pQTL.
- 跨pQTL与平均36%的GWAS位点共定位,将它们与细胞功能联系起来.
- 在自身免疫GWAS位点发现的转pQTL效应汇聚到特定的PPI上,突出了潜在的治疗点.
结论:
- 跨pQTLs,特别是PPI网络中的那些,对于理解复杂特征的遗传结构至关重要.
- PPI在蛋白质组的转调中发挥着重要作用.
- 这种方法成功地将GWAS位点与生物功能联系起来,并确定了有前途的蛋白质复合体和治疗干预的途径.
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