Effects of gene-by-environment interaction in light of differential susceptibility
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PROVIDER: PRJNA432354 | ENA |
REPOSITORIES: ENA
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Project description:Effects of gene-by-environment interaction on the H3K4me3 profile in the light of differential susceptibility
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Project description:Effects of gene-by-environment interaction on the mRNA profile in the light of differential susceptibility
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Project description:Purpose: Investigation of effects of early adversity in mice deficient for serotonin transporter on mRNA expression in the context of differential susceptibility Methods: Following prenatal stress and behavioural screening in adulthood, month old females, either wildtype or carrying a heterozygous knockout of the serotonin transporter gene, were sacrificed, brains extracted, the hippocampi of both hemispheres dissected, blended and separated in two protions. From one of these portions RNA was extracted. Extracted RNA was further processed by an external company, i.e. IGA Technologies (Udine, Italy). Following library preparation, samples were sequenced on the illumina HiSeq2000 platform (single end, 50 bp, 30 million reads/sample). Reads were mapped to the Mus musculus GRCm38.p5 genome using STAR (Dobin et al. 2013). Following mapping, the reads per position were determined using HTSeq (Anders et al. 2015). These counts were then used for the analysis of differentially expressed genes (DEGs) using the R package DeSeq2 (Love et al. 2014). Results: dependent on the serotonin transporter genotype and behaviourally determined susceptibility to early life adversity, animals displayed distinct gene expression. As expected, the effect sizes and significances were rather subtle. Conclusion: the modulation of differential susceptibility seems to be modulated by distinct mRNA expression profiles, dependent on the serotonin transporter genotype
2024-01-27 | GSE109929 | GEO
Project description:Purpose: Investigation of effects of early adversity in mice deficient for serotonin transporter on H3K4me3 enrichment in the context of differential susceptibility Methods: Following prenatal stress and behavioural screening in adulthood, 3 month old females, either wildtype or carrying a heterozygous knockout of the serotonin transporter gene, were sacrificed, brains extracted, the hippocampi of both hemispheres dissected, blended and separated in two protions. For one of these portions the material was split again in two portions, of which one was fixed using 1% PFA, and was subsequently processed using a standard Chromatin immuno precipitation protocol. Following ChIP, the samples were processed by Nxt-Dx Belgium. Library preparation was performed using the NEBNext Ultra II DNA Library prep kit for Illumina (NEB, Ipswitch, Massatchusettes, USA). Subsequently, the whole IP material was subjected to ends prep and ligation of Illumina adaptors. A clean up of the adaptor-ligated DNA with AMPure XP beads (Beckman Coulter) was performed without size selection. The eluted material was subjected to enrichment PCR (14 cycles) with the NEBNext Index primers, and a last clean up with AMPure XP beads followed. The quality of the final libraries was checked on a Bioanalyzer 2100 DNA 1000 chip (Agilent, Santa Clara, CA, USA). The concentration was determined by performing qPCR on the samples using a dilution of PhiX index3 as standard. The concentration of all indexed samples was adjusted to 10 nM and samples were pooled for sequencing. Sequencing was performed on an Illumina HiSeq4000 (read-length of 50 bp with 25-30 million reads/sample, paired-end). Results: dependent on the serotonin transporter genotype and behaviourally determined susceptibility to early life adversity, animals displayed distinct H3K4me3 enrichment. As expected, the effect sizes and significances were rather subtle. Conclusion: the epigenetic regulation by prenatal stress seems to be modulated by the serotonin transporter genotype
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2010-04-22 | GSE13803 | GEO
Project description:We have previously identified a significant increase in chloroplast reactive oxygen species in wounded leaves of Arabidopsis and other plants, which is light-dependent (Flor-Henry et al. (2004) BMC Plant Biology 4:19). The aims of this study were to (i) examine the early response to mechanical wounding in Arabidopsis leaves, (ii) test the hypothesis that light-dependent chloroplast ROS may play a role in signalling for changes in gene expression in wounded leaves, and (iii) examine the broader impact of the light environment on the wound response in Arabidopsis. Keywords: Stress response The experiment was a two-by-two factorial design, with wounding and light as the two variables. In each replicate, there are 4 treatments: unwounded/light, unwounded/dark, wounded/light, wounded/dark. Three independent biological replicate experiments were performed, with one array hybridisation performed per treatment.
2010-05-07 | E-GEOD-13803 | biostudies-arrayexpress
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2024-01-27 | GSE109930 | GEO
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Project description:Plants transcriptome react to environment temperture changes profoundly. In Arabidopsis seedlings, genes response to temperature fluctuations to adopt the ever-changing ambient envrionment. We used microarrays to detail the global programme of gene expression underlying heat stress response progress in Arabidopsis. Ten-day-old Arabidopsis seedlings were selected for RNA extraction and hybridization on Affymetrix microarrays. We sought to explore the heat stress response in transcriptome, thus we treat the plants with heat stress. While in order to identify the interaction between light and temperature signaling pathways in plant , we treat Arabidopsis with heat stress under both light and dark conditions. To that end, our plant tissues are grouped as: HS-LIGHT, HS-DARK,CONTROL-LIGHT,CONTROL-DARK.
2014-06-19 | E-GEOD-58616 | biostudies-arrayexpress
Project description:Genotype Environment interaction in shell breakage
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