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基因组位点图谱揭示精神分裂症相关的基因和突触生物学
2022-04-16 14:36

英国卡迪夫大学Michael C. O’Donovan等研究人员合作利用基因组位点图谱揭示精神分裂症相关的基因和突触生物学。2022年4月8日,国际知名学术期刊《自然》在线发表了这一成果。

研究人员对多达76,755名精神分裂症患者和243,649名对照者进行了两阶段的全基因组关联研究,报告了287个不同基因组位点的共同变异关联。关联集中在中枢神经系统的兴奋性和抑制性神经元中表达的基因,但在其他组织或细胞类型中没有表达。利用精细映射和功能基因组数据,研究人员确定了120个基因(106个蛋白编码),这些基因可能是其中一些基因位点关联的基础,包括16个具有可信的因果关系的非同义词或非翻译区变异的基因。
 
分析结果还牵涉到与神经元功能有关的基本过程,包括突触组织、分化和传递。精细绘制的候选基因富集了与精神分裂症患者中罕见的破坏性编码变异相关的基因,包括谷氨酸受体亚单位GRIN2A和转录因子SP4,并且也富集了此类变异牵涉到神经发育障碍的基因。研究人员确定了与精神分裂症病理生理学有关的生物过程;显示了精神分裂症和神经发育障碍中常见和罕见变异体关联的趋同;并提供了一个优先考虑的基因和变异体资源,可用于推进机制研究。
 
据悉,精神分裂症的遗传率为60-80%,其中大部分可归因于常见的风险等位基因。
 
附:英文原文
 
Title: Mapping genomic loci implicates genes and synaptic biology in schizophrenia

Author: Trubetskoy, Vassily, Pardias, Antonio F., Qi, Ting, Panagiotaropoulou, Georgia, Awasthi, Swapnil, Bigdeli, Tim B., Bryois, Julien, Chen, Chia-Yen, Dennison, Charlotte A., Hall, Lynsey S., Lam, Max, Watanabe, Kyoko, Frei, Oleksandr, Ge, Tian, Harwood, Janet C., Koopmans, Frank, Magnusson, Sigurdur, Richards, Alexander L., Sidorenko, Julia, Wu, Yang, Zeng, Jian, Grove, Jakob, Kim, Minsoo, Li, Zhiqiang, Voloudakis, Georgios, Zhang, Wen, Adams, Mark, Agartz, Ingrid, Atkinson, Elizabeth G., Agerbo, Esben, Al Eissa, Mariam, Albus, Margot, Alexander, Madeline, Alizadeh, Behrooz Z., Alptekin, Kksal, Als, Thomas D., Amin, Farooq, Arolt, Volker, Arrojo, Manuel, Athanasiu, Lavinia, Azevedo, Maria Helena, Bacanu, Silviu A., Bass, Nicholas J., Begemann, Martin, Belliveau, Richard A., Bene, Judit, Benyamin, Beben, Bergen, Sarah E., Blasi, Giuseppe, Bobes, Julio, Bonassi, Stefano, Braun, Alice, Bressan, Rodrigo Affonseca, Bromet, Evelyn J., Bruggeman, Richard, Buckley, Peter F., Buckner, Randy L., Bybjerg-Grauholm, Jonas, Cahn, Wiepke

Issue&Volume: 2022-04-08

Abstract: Schizophrenia has a heritability of 60–80%1, much of which is attributable to common risk alleles. Here, in a two-stage genome-wide association study of up to 76,755 individuals with schizophrenia and 243,649 control individuals, we report common variant associations at 287 distinct genomic loci. Associations were concentrated in genes that are expressed in excitatory and inhibitory neurons of the central nervous system, but not in other tissues or cell types. Using fine-mapping and functional genomic data, we identify 120 genes (106 protein-coding) that are likely to underpin associations at some of these loci, including 16 genes with credible causal non-synonymous or untranslated region variation. We also implicate fundamental processes related to neuronal function, including synaptic organization, differentiation and transmission. Fine-mapped candidates were enriched for genes associated with rare disruptive coding variants in people with schizophrenia, including the glutamate receptor subunit GRIN2A and transcription factor SP4, and were also enriched for genes implicated by such variants in neurodevelopmental disorders. We identify biological processes relevant to schizophrenia pathophysiology; show convergence of common and rare variant associations in schizophrenia and neurodevelopmental disorders; and provide a resource of prioritized genes and variants to advance mechanistic studies.

DOI: 10.1038/s41586-022-04434-5

Source: https://www.nature.com/articles/s41586-022-04434-5

Nature:《自然》,创刊于1869年。隶属于施普林格·自然出版集团,最新IF:69.504
官方网址:http://www.nature.com/
投稿链接:http://www.nature.com/authors/submit_manuscript.html


本期文章:《自然》:Online/在线发表

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