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Chen, Chao; Meng, Qingtuan; Xia, Yan; Ding, Chaodong; Wang, Le; Dai, Rujia; Cheng, Lijun; Gunaratne, Preethi; Gibbs, Richard A; Min, Shishi; Coarfa, Cristian; Reid, Jeffrey G; Zhang, Chunling; Jiao, Chuan; Jiang, Yi; Giase, Gina; Thomas, Amber; Fitzgerald, Dominic; Brunetti, Tonya; Shieh, Annie; Xia, Cuihua; Wang, Yongjun; Wang, Yunpeng; Badner, Judith A; Gershon, Elliot S; White, Kevin P; Liu, Chunyu
Science translational medicine, 12/2018, Letnik: 10, Številka: 472Journal Article
Schizophrenia and bipolar disorder are complex psychiatric diseases with risks contributed by multiple genes. Dysregulation of gene expression has been implicated in these disorders, but little is known about such dysregulation in the human brain. We analyzed three transcriptome datasets from 394 postmortem brain tissue samples from patients with schizophrenia or bipolar disorder or from healthy control individuals without a known history of psychiatric disease. We built genome-wide coexpression networks that included microRNAs (miRNAs). We identified a coexpression network module that was differentially expressed in the brain tissue from patients compared to healthy control individuals. This module contained genes that were principally involved in glial and neural cell genesis and glial cell differentiation, and included schizophrenia risk genes carrying rare variants. This module included five miRNAs and 545 mRNAs, with six transcription factors serving as hub genes in this module. We found that the most connected transcription factor gene , also identified on a genome-wide association study for bipolar disorder, could regulate the miRNA and other putative target mRNAs. These regulatory relationships were replicated using PsychENCODE/BrainGVEX datasets and validated by knockdown and overexpression experiments in SH-SY5Y cells and human neural progenitor cells in vitro. Thus, we identified a brain gene expression module that was enriched for rare coding variants in genes associated with schizophrenia and that contained the putative bipolar disorder risk gene The transcription factor may be a key regulator of gene expression in this disease-associated gene coexpression module.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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