Histone ChIP-chip of adult hippocampus tissue from fetal alcohol exposed mice
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE61488 | GEO | 2014/09/18
SECONDARY ACCESSION(S): PRJNA261293
REPOSITORIES: GEO
Similar Datasets
Project description:In this experiment, we exposed mice to ethanol injections on postnatal days 4 and 7. We then extracted whole-hippocampus on postnatal day 70. We performed MeDIP-chip using an antibody against 5mC. We also perfomed MEDME anaylsis using a chip with fully methylated DNA to act as a control. We found alterations in both modifications at many sites, including oxidative stress genes and imprinted loci. We also found many affect lipid metabolism pathways. Comparision of neonatal ethanol-injected with saline injected C57BL/6J mouse hippocampus in adulthood (day 70)
2015-07-25 | E-GEOD-71313 | biostudies-arrayexpress
Project description:In this experiment, we exposed mice to ethanol injections on postnatal days 4 and 7. We then extracted whole-hippocampus on postnatal day 70. We performed MeDIP-chip using an antibody against 5mC. We also perfomed MEDME anaylsis using a chip with fully methylated DNA to act as a control. We found alterations in both modifications at many sites, including oxidative stress genes and imprinted loci. We also found many affect lipid metabolism pathways.
2015-07-25 | GSE71313 | GEO
Project description:Proteotoxicity from insufficient clearance of misfolded/damaged proteins underlies many diseases. Carboxyl terminus of Hsc70-interacting protein (CHIP) is an important regulator of proteostasis in many cells, having E3-ligase and chaperone functions and often directing damaged proteins towards proteasome recycling. While enhancing CHIP functionality has broad therapeutic potential, prior efforts have all relied on genetic upregulation. Here we demonstrate that CHIP-mediated protein turnover is markedly post-translationally enhanced by direct protein kinase G (PKG) phosphorylation at S20 (mouse, S19 human). This increases CHIP binding affinity to Hsc70, CHIP protein halflife, and consequent clearance of stress-induced ubiquitinated-insoluble proteins. PKGmediated CHIP-pS20 or expressing CHIP-S20E (phosphomimetic) reduces ischemic proteo- and cytotoxicity, whereas a phospho-silenced CHIP-S20A amplifies both. In vivo, depressing PKG activity lowers CHIP-S20 phosphorylation and protein, exacerbating proteotoxicity and heart dysfunction after ischemic injury. CHIP-S20E knock-in mice better clear ubiquitinated proteins and are cardio-protected. PKG activation provides post-translational enhancement of protein quality control via CHIP.
2021-09-09 | PXD021531 | Pride
Project description:Sustained or repeated exposure to sedating drugs such as alcohol triggers homeostatic adaptations in the brain that lead to the development of drug tolerance and dependence. These adaptations involve long-term changes in the transcription of drug-responsive genes as well as an epigenetic restructuring of chromosomal regions that is thought to signal and maintain the altered transcriptional state. Drug-induced epigenetic changes have been shown to be important in the long-term adaptation that leads to alcohol tolerance and dependence endophenotypes. A major constraint impeding progress is that alcohol produces a surfeit of changes in gene expression, most that may not make any meaningful contribution to the ethanol response under study. Here we used a novel genomic epigenetic approach to find genes relevant for functional alcohol tolerance by exploiting the commonalities of two chemically distinct drugs. In Drosophila melanogaster, ethanol and benzyl alcohol induce mutual cross-tolerance, indicating that they share a common mechanism for producing tolerance. We surveyed the genome-wide changes in histone acetylation that occur in response to these drugs. Each drug induces modifications in a large number of genes. The genes that respond similarly to either treatment, however, represent a subgroup enriched for genes important for the common tolerance response. Genes were functionally tested for behavioral tolerance to the sedative effects of ethanol and benzyl alcohol using mutant and inducible RNAi stocks. We identified a network of genes that are essential for the development of tolerance to sedation by alcohol. A total of six samples. Two H4Ac ChIP-chip biological replicates from heads of Drosophila (untreated, IP/input), two H4Ac ChIP-chip biological replicates from heads of Drosophila sedated with benzyl alcohol (IP_treated/IP_control), and two H4Ac ChIP-chip biological replicates from heads of Drosophila sedated with ethanol (IP_treated/IP_control) are included.
2013-09-05 | E-GEOD-48449 | biostudies-arrayexpress
Project description:Growth restriction, craniofacial dysmorphology and central nervous system defects are the main diagnostic features of fetal alcohol syndrome. Studies in humans and mice have reported that the growth restriction can be prenatal and/or postnatal, but the underlying mechanisms remain unknown. We recently described a mouse model of moderate gestational ethanol exposure that produces measurable phenotypes in line with fetal alcohol syndrome, e.g. craniofacial changes and growth restriction in adolescent mice. Here we further characterize the growth restriction phenotype by measuring body weight at gestational day 16.5, cross-fostering from birth to weaning, and extending our observations into adulthood. Furthermore, in an attempt to unravel the molecular events contributing to the growth phenotype, we have compared gene expression patterns in the liver and kidney of non-fostered ethanol-exposed and control mice at postnatal day 28. We find that the ethanol-induced growth phenotype is not detectable prior to birth, but is present at weaning, even in mice that have been cross-fostered to unexposed dams. This suggests a postnatal growth restriction phenotype that is not due to deficient postpartum care by dams that drank ethanol, but rather a physiological result of ethanol exposure in utero. We also find that, despite some catch-up growth after five weeks of age, the effect extends into adulthood, consistent with longitudinal studies in humans. Genome-wide gene expression analysis revealed interesting ethanol-induced changes in the liver, including genes involved in the metabolism of exogenous and endogenous compounds, iron homeostasis and lipid metabolism.
2010-10-01 | GSE23105 | GEO
Project description:Growth restriction, craniofacial dysmorphology and central nervous system defects are the main diagnostic features of fetal alcohol syndrome. Studies in humans and mice have reported that the growth restriction can be prenatal and/or postnatal, but the underlying mechanisms remain unknown. We recently described a mouse model of moderate gestational ethanol exposure that produces measurable phenotypes in line with fetal alcohol syndrome, e.g. craniofacial changes and growth restriction in adolescent mice. Here we further characterize the growth restriction phenotype by measuring body weight at gestational day 16.5, cross-fostering from birth to weaning, and extending our observations into adulthood. Furthermore, in an attempt to unravel the molecular events contributing to the growth phenotype, we have compared gene expression patterns in the liver and kidney of non-fostered ethanol-exposed and control mice at postnatal day 28. We find that the ethanol-induced growth phenotype is not detectable prior to birth, but is present at weaning, even in mice that have been cross-fostered to unexposed dams. This suggests a postnatal growth restriction phenotype that is not due to deficient postpartum care by dams that drank ethanol, but rather a physiological result of ethanol exposure in utero. We also find that, despite some catch-up growth after five weeks of age, the effect extends into adulthood, consistent with longitudinal studies in humans. Genome-wide gene expression analysis revealed interesting ethanol-induced changes in the liver, including genes involved in the metabolism of exogenous and endogenous compounds, iron homeostasis and lipid metabolism.
2010-10-01 | GSE23106 | GEO
Project description:The goal of this study was to assess RNA expression in human primary hepatocytes in response to ethanol exposure compared to control. The hepatocytes were cultured in co-culture on a Liver-Chip model with Kupffer cells and Liver sinusoidal endothelial cells (LSECs) and treated with 0.08% to 0.16% ethanol for 48h.
2021-05-25 | GSE175396 | GEO
Project description:The individualized treatment of tumors has always been an urgent problem in clinical practice. Organoids-on-a-chip can reflect the heterogeneity of tumors and is a good model for in vitro anticancer drug screening. In this study, surgical specimens of patients with advanced colorectal cancer will be collected for organoid culture and organoids-on-a- chip. Use organoids-on-a-chip to screen tumor chemotherapy drugs, compare the results of patients’ actual medication regimens, and study the guiding role of organoids in the formulation of precise tumor treatment plans. The investigators will compare the response of organoids to drugs in vitro with the patient’s response to actual chemotherapy and targeted drugs and explore the feasibility and accuracy of organoids-on-a-chip based drug screening for advanced colorectal cancer. The project will establish a screening platform for chemotherapeutic drugs and targeted drugs based on colorectal cancer organoids to quickly and accurately formulate personalized treatment plans for clinical patients.
| 2385953 | ecrin-mdr-crc
Project description:Animal models provide opportunity to study neurobiological aspects of human alcoholism. Changes in gene expression have been implicated in mediating brain function, including reward system and addiction. The current study aimed to identify novel genes that may underlie ethanol preference. Microarray analysis comparing gene expression in nucleus accumbens (NAc), hippocampus (HP) and prefrontal medial cortex (mPFC) was performed in two rat strains selected for extreme levels of ethanol preference - Warsaw High Preferring (WHP) and Warsaw Low Preferring (WLP). The identified candidate genes may underlie differential ethanol preference in rat model of alcoholism. This study was supported through funding from the following grants: Polish Scientific Committee Grant 2011/03/N/NZ29/05222, Polish Ministry of Science and Higher Education Grants “Iuventus Plus” (IP2011 030371) and N N519 657940.
2015-01-17 | GSE65064 | GEO
Project description:Study the effect of fetal alcohol exposure (FAE) on hippocampal development; Compare the pattern of gene expression in the hippocampus of FAE and control rats fed either an isocaloric diet or a normal diet, at post-natal day 5 of development. FAE will delay the maturation of the hippocampus; Rats were fed one of three diet, a liquid diet with 5% ethanol (FAE group), an isocaloric liquid diet (Isocalorc group) or nomal lab chao (normal group)
2008-06-12 | E-GEOD-1997 | biostudies-arrayexpress