精神病生物型的遗传分析:共享的祖先调整的多基因风险和独特的基因组关联
Cuihua Xia1,2,3, Ney Alliey-Rodriguez2,4, Carol A Tamminga5
1MOE Key Laboratory of Rare Pediatric Diseases & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, and Department of Psychiatry, The Second Xiangya Hospital, Central South University, Changsha 410000, China.
medRxiv : the preprint server for health sciences
|December 16, 2024
概括
精神病生物型,由神经生物学定义,显示类似的祖先调整的多基因风险得分. 基因组分析确定了7个与神经通路相关的因果基因,这表明对精神病障碍的生物型特定研究.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 遗传学 是一个遗传学.
背景情况:
- 双极性精神分裂症中介类型网络 (B-SNIP) 确定了超越传统DSM诊断的精神病生物型.
- 多基因风险评分 (PRS) 需要祖先调整以进行多祖先样本分析,并开发了新的祖先调整PRS (AAPRS) 方法.
- 精神分裂症PRS分析表明,Khera AAPRS方法提供了优越的可移植性和与Ge方法相比的准确性.
研究的目的:
- 在多祖先精神病生物型中分析新型祖先调整多基因风险评分 (AAPRS) 方法的可移植性和准确性.
- 通过基因组分析识别与精神病相关的特定基因和生物途径生物型.
- 在未来的药理和生物研究中探索生物型特定调查的潜力.
主要方法:
- 应用两种新的AAPRS方法 (Khera和Ge) 治疗精神分裂症PRS跨多祖先精神病生物型.
- 成人和胎儿大脑组织中基因调节表达 (GReX) 的转录组广泛关联研究 (TWAS),以确定与生物型的基因关联.
- 将基因型主要组件纳入TWAS以控制通胀和门德尔随机化 (MR) 以评估已识别的基因的因果关系.
主要成果:
- 与Ge方法相比,Khera AAPRS方法表现出优越的可移植性和可比的精神分裂症PRS预测准确性.
- 三种精神病生物型在不同的祖先中表现出类似的AAPRS值.
- 基因组分析确定了12个与特定生物型相关的显著基因关联,其中7个基因 (例如TMEM140,ARTN) 满足了因果关系的MR标准.
- 相关基因在RET信号传递,NCAM1相互作用和神经元外生长途径中得到丰富.
结论:
- 在精神病研究中,祖先调整的PRS方法对于分析不同人群中的遗传风险至关重要.
- 特定的基因和神经通路与不同的精神病生物型有关,为研究提供了新的目标.
- 单独分析精神病生物型对于推进有针对性的药理疗法和生物学理解具有前途.
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