整个蛋白质组的门德尔随机化揭示了循环中的蛋白质与儿童体质指数有因果关系
Raphael Avocegamou1,2, Basile Jumentier1, Kaossarath Fagbemi1
1Azrieli Research Center of the Sainte-Justine University Hospital, CHU Sainte Justine, Université de Montréal, 3175 Côte-Sainte-Catherine, Montreal, Quebec, H3T 1C5, Canada.
Scientific reports
|December 15, 2025
概括
研究人员确定了三种可能作为儿童肥胖生物标志物的血液蛋白. 这些蛋白质,内素 (ENG),脂肪酸结合蛋白4 (FABP4) 和细胞粘附分子1 (CADM1),显示了未来治疗点的潜力.
科学领域:
- 遗传学 是一个遗传学.
- 代谢学 代谢学 代谢学
- 公共卫生 公共卫生
背景情况:
- 儿童肥胖是一个重大的全球健康问题,影响了五分之一的年轻人.
- 确定可靠的生物标志物对于早期检测和干预策略至关重要.
- 循环蛋白质提供了作为小儿肥胖的非侵入性指标的潜力.
研究的目的:
- 使用孟德尔的随机化方法识别与儿童肥胖相关的循环蛋白质生物标志物.
- 调查蛋白质水平与儿童体重指数 (BMI) 之间的因果关系.
- 基于已识别的蛋白质生物标志物,探索儿童肥胖的潜在治疗点.
主要方法:
- 利用了来自成人和儿科蛋白质基因组广泛关联研究 (GWAS) 的全基因组显著的cis-protein定量特征位点 (pQTL).
- 采用两个样本的门德尔随机化来估计蛋白质对儿童BMI的因果作用. 在一个大型的欧洲GWAS队列中.
- 进行了敏感性分析,包括局部化,全现象关联研究 (PheWAS) 和反向孟德尔随机化以验证.
主要成果:
- 三种蛋白质,内素 (ENG),脂肪酸结合蛋白4 (FABP4) 和细胞粘附分子1 (CADM1),与儿童BMI显著反向因果关系.
- 由于儿科队列的统计能力有限,这些蛋白质使用成人蛋白质组数据进行了鉴定.
- FABP4显示了反向因果关系的证据,这表明了潜在的补偿生物机制.
结论:
- 确定了ENG,FABP4和CADM1作为儿童肥胖的潜在血液生物标志物.
- 这些蛋白质代表了作为治疗点的进一步功能验证和探索的有希望的候选人.
- 需要进一步的研究来阐明这些已识别的蛋白质在治疗儿童肥胖症中的生物机制和治疗潜力.
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