精神分裂症与改变的DNA甲基化变异相关
Dylan J Kiltschewskij1,2, William R Reay3, Murray J Cairns4,5
1School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, Australia.
精神分裂症与显著的DNA甲基化变异有关,而不仅仅是平均变化. 这种表观遗传变异可能解释个体之间症状和治疗反应的差异.
科学领域:
- 精神病学的表观遗传学
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
背景情况:
- 精神分裂症的表型异质性受遗传和环境因素的影响.
- 在精神分裂症中,全表观基因组关联研究 (EWAS) 显示了DNA甲基化水平的改变.
- 与平均变化不同的是DNA甲基化变异,未得到充分研究,但可能解释个体差异.
研究的目的:
- 通过迄今为止最大的元分析,研究精神分裂症的DNA甲基化变异.
- 为了确定可变甲基化位 (VMP) 和差异甲基化位 (DMP) 之间的重叠.
- 探索DNA甲基化变异与临床特征和大脑区域的关联.
主要方法:
- 血液DNA甲基化变异在三个队列中的元分析 (1036例精神分裂症病例,954例对照).
- 对可变甲基化位置 (VMP) 和差异甲基化位置 (DMP) 的分析.
- 检查VMP与精神分裂症相关基因,大脑丰富基因和临床指标的关联.
主要成果:
- 在精神分裂症相关的VMP和DMP之间发现了很小的重叠 (0.1%).
- 与精神分裂症相关的VMP被丰富了与精神分裂症相关的和大脑丰富的基因.
- DNA甲基化变异与发病年龄,认知缺陷和症状严重程度的共变性.
- 在第一发精神病队伍中发现了显著的VMP.
结论:
- 精神分裂症与DNA甲基化变异的重大变化有关.
- DNA甲基化变异可能是精神分裂症表型异质性的关键因素.
- 这些发现强调了研究甲基化变异对于理解精神分裂症的重要性.
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