鉴定精神分裂症和阿尔茨海默氏症之间共享的遗传结构
Huaigui Liu1, Yingying Xie1, Yuan Ji1
1Department of Radiology, Tianjin Key Lab of Functional Imaging & Tianjin Institute of Radiology, Tianjin Medical University General Hospital, Tianjin, China.
精神分裂症和阿尔茨海默病具有共同的遗传联系,揭示了共同的分子机制. 这一发现可能会为这两种高度遗传性脑疾病带来新的治疗点.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 精神病学是一个精神病学.
背景情况:
- 精神分裂症 (SCZ) 和阿尔茨海默氏症 (AD) 是高度遗传的脑疾病,具有重叠的症状,如精神病和认知衰退.
- 尽管观察到并发症,SCZ和AD背后的共同遗传架构在很大程度上是未知的.
研究的目的:
- 研究精神分裂症和阿尔茨海默氏症之间的共同遗传风险架构.
- 通过大规模的全基因组关联研究 (GWAS) 识别导致SCZ和AD的共同遗传变异.
主要方法:
- 利用来自最大的GWAS的SCZ (n=130,644) 和AD (n=455,258) 在欧洲祖先个体中的总结统计数据.
- 采用条件/结合假发现率 (FDR) 分析来提高统计能力和检测共享的遗传变异.
- 计算了SCZ和AD之间的遗传相关性.
主要成果:
- 确定了SCZ和AD之间的显著多基因重叠,表明了共享的遗传架构.
- 在条件FDR<0.01时发现了268个只有SCZ的SNP (78个新型SNP) 和125个只有AD的SNP (55个新型SNP).
- 在结合性FDR<0.05时,SCZ和AD共享的16个主要SNP被发现,只有一半显示一致的效应方向.
- 观察到两种疾病之间的温和遗传相关性 (r=0.097,P=0.026).
结论:
- 这项研究提供了强有力的证据,证明精神分裂症和阿尔茨海默氏症之间存在共同的遗传基础.
- 这些发现表明存在共同的分子遗传机制,是这两种疾病的基础.
- 识别共同的遗传因素可能为开发适用于SCZ和AD的新型治疗策略铺平道路.
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