对认知功能和精神分裂症的共享和独特遗传架构的基因组洞察
Olivia Wootton1, Alexey A Shadrin2, Thomas Bjella2
1Department of Psychiatry and Neuroscience Institute, University of Cape Town, Cape Town, South Africa.
medRxiv : the preprint server for health sciences
|November 28, 2023
概括
认知能力的基因因素与精神分裂症有适度的重叠,但这些共同的遗传影响不能预测特定的精神分裂症症状. 这突出了认知功能和精神分裂症的独特遗传架构.
科学领域:
- 精神病学遗传学 精神病学遗传学
- 认知神经科学 认知神经科学
- 生物信息学是一种生物信息学.
背景情况:
- 认知障碍显著影响精神分裂症的功能结果.
- 了解精神分裂症认知功能障碍的生物学基础至关重要.
- 以前的研究表明,认知能力和精神分裂症之间存在遗传重叠,因此需要进一步调查它们的共同遗传结构.
研究的目的:
- 通过基因组结构方程建模,识别潜在的认知因素,以捕捉12种认知特征的遗传负债.
- 探索这些潜在的认知因素,精神分裂症和精神分裂症症状维度之间的遗传重叠.
- 划分独特和共享的基因组区域,有助于认知能力和精神分裂症之间的关系.
主要方法:
- 基因组结构方程建模应用于英国生物库 (UKB) 的12个认知特征.
- 使用大规模的全基因组关联研究数据,分析已识别的潜在认知因素 (视觉空间,语言分析,决策/反应时间) 和精神分裂症之间的遗传相关性.
- 补充统计方法检查局部遗传相关性,多基因重叠和共享位置的生物注释.
主要成果:
- 确定了三种广泛的潜在认知因素,这些因素是UKB认知测试中的基因相关性.
- 在每个认知因素和精神分裂症之间观察到显著的,中度的负面遗传相关性.
- 独特的基因组区域与精神分裂症和每个认知因素之间的重叠有关,与神经发育和神经元功能相关的共享位置有关. 共同的遗传决定因素无法预测精神分裂症症状的尺寸.
结论:
- 不同的遗传架构是认知能力和精神分裂症的基础,尽管有共同的遗传重叠.
- 已识别的潜在认知因素为理解导致精神分裂症认知功能障碍的遗传负债提供了一个框架.
- 这些发现强调了认知和精神分裂症之间的遗传关系的复杂性,这对未来的研究和治疗策略有影响.
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