Project description:we profiled whole transcriptome in depression patients’ and healthy volunteers blood samples via microarray analysis.Differentially expressed miRNAs were selected for deep analysis. Especially the Differentially expressed genes that associated with cancer
Project description:we profiled whole transcriptome in depression patients’ and healthy volunteers blood samples via microarray analysis.Differentially expressed circRNAs, lncRNAs and mRNAs were selected for deep analysis. Especially the Differentially expressed genes that associated with cancer
Project description:Depression is a common and disabling disorder, representing a major social and economic health issue. Moreover, depression is associated with the progression of diseases with an inflammatory etiology including many inflammatory-related disorders. At the molecular level, the mechanisms by which depression might promote the onset of these diseases and associated immune-dysfunction are not well understood. In this study we assessed genome-wide patterns of DNA methylation in whole blood-derived DNA obtained from individuals with a self-reported history of depression (n=100) and individuals without a history of depression (n=100) using the Illumina 450K microarray. Our analysis identified 6 significant (Sidak corrected P < 0.05) depression-associated differentially methylated regions (DMRs); the top-ranked DMR was located in exon 1 of the LTB4R2 gene (Sidak corrected P = 1.27 x 10-14). Polygenic risk scores (PRS) for depression were generated and known biological markers of inflammation, telomere length (TL) and IL-6, were measured in DNA and serum samples respectively. Next, we employed a systems-level approach to identify networks of co-methylated loci associated with a history of depression, in addition to depression PRS, TL and IL-6 levels. Our analysis identified one depression-associated co-methylation module (P = 0.04). Interestingly, the depression-associated module was highly enriched for pathways related to immune function and was also associated with TL and IL-6 cytokine levels. In summary, our genome-wide DNA methylation analysis of individuals with and without a self-reported history of depression identified several candidate DMRs of potential relevance to the pathogenesis of depression and its associated immune-dysfunction phenotype.
Project description:To identify early predictive biomarkers for postpartum depression using peripheral blood gene expression profiles RNA was isolated from peripheral blood collected in Tempus RNA tubes (Applied Biosystems, Darmstadt, Germany) at all three investigated time points for each woman in the discovery sample. RNA was isolated using the Versagene kit (Gentra Systems, Minneapolis, U.S.A.), quantified using the Nanophotometer and quality checks were performed on the Agilent Bioanalyzer.