多组体整合分析 精确定位影响大脑结构和功能的蛋白质:针对神经精神疾病的药物标和神经成像生物标志物
Yunzhuang Wang1,2, Sunjie Zhang1,2, Weiming Gong1,2
1Department of Biostatistics, School of Public Health, Cheeloo College of Medicine, Shandong University, 44, Wenhua West Road, Jinan 250012, China.
International journal of molecular sciences
|September 14, 2024
概括
这项研究确定了91种结合脑成像表型和神经精神疾病的类蛋白质,揭示了潜在的药物标和阿尔茨海默氏症等疾病的调解途径.
科学领域:
- 神经遗传学和Omics的整合
- 神经科学和神经成像技术
- 药物基因组学和药物发现
背景情况:
- 了解脑图像衍生的表型 (IDP) 的遗传和分子基础以及它们与神经精神疾病 (NDs) 的关系至关重要.
- 将蛋白质组数据与全基因组关联研究 (GWAS) 总结统计数据集成,提供了一种强有力的方法来识别影响IDP的蛋白质.
研究的目的:
- 开发和应用一个系统的omics-integration框架来识别与IDP相关的因果性脑和血蛋白.
- 为了研究这些蛋白质对NDs的类效应,探索调解途径,并确定潜在的药物点.
主要方法:
- 采用了多阶段分析,包括全蛋白质组关联研究 (PWAS),孟德尔随机化 (MR) 和局部化 (COLOC).
- 运用了类型,调解和药物优先级分析来探索蛋白质-IDP-ND关系和治疗潜力.
- 集成的蛋白质定量特征位点 (pQTL) 数据与GWAS对国内流离失所者的总结统计数据.
主要成果:
- 通过PWAS识别了201个与IDP相关的血和398个脑蛋白.
- 通过MR和COLOC确定了313种潜在的因果性IDP相关蛋白质,在神经表型中显著丰富.
- 发现了91种连接IDP和ND的类蛋白质,包括EGFR,TMEM106B,GPT和HLA-B等关键基因;6.33%具有已知的药物标.
结论:
- 这项研究成功地确定了许多蛋白质,因果地将大脑成像特征与神经精神疾病联系起来.
- 通过神经成像标记揭示了特定的调解途径,例如TMEM106B和EGFR通过神经成像标记影响阿尔茨海默病风险.
- 突出了神经成像生物标志物和神经精神疾病的新药标的潜力.
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