Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Gene expression analysis of the colon with and without DNA methyltransferase 1 (Dnmt1) inhibition

ABSTRACT: We performed gene expression microarray to assess the effects of reduced DNA methylation on global gene expression. Gene expression profiles of colonic mucosa from mice with two different genotypes (Dnmt1LO/LO and Dnmt1LO/LO, TgVillacIGY) were compared. Dnmt1 expression is repressed only in the Dnmt1LO/LO, TgVillacIGY mice.

ORGANISM(S): Mus musculus

PROVIDER: GSE28386 | GEO | 2011/04/14

SECONDARY ACCESSION(S): PRJNA139085

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Similar Datasets

Gene expression analysis of the colon with and without DNA methyltransferase 1 (Dnmt1) inhibition

Project description:We performed gene expression microarray to assess the effects of reduced DNA methylation on global gene expression. Gene expression profiles of colonic mucosa from mice with two different genotypes (Dnmt1LO/LO and Dnmt1LO/LO, TgVillacIGY) were compared. Dnmt1 expression is repressed only in the Dnmt1LO/LO, TgVillacIGY mice. Total RNA was isolated from the colonic mucosa of four mouse, two biological replicates of each genotype in two technical relicates. Their gene expression profiles were obtained using the Illumina Ref-8 whole-genome expression BeadChip (MouseRef-8 v2.0). We processed our data using the Lumi Id and ReMOAT annotation data base (MouseWG-6 corresponding to GPL6887).

2011-04-14 | E-GEOD-28386 | biostudies-arrayexpress

Inhibition of DNMT1 methyltransferase activity via glucose-regulated O-GlcNAcylation alters the epigenome

Project description:The DNA methyltransferase activity of DNMT1 is vital for genomic maintenance of DNA methylation. We report here that DNMT1 function is regulated by O-GlcNAcylation, a protein modification that is sensitive to glucose levels, and that elevated O-GlcNAcylation of DNMT1 from high glucose environment leads to alterations to the epigenome. Using mass spectrometry and complementary alanine mutation experiments, we identified S878 as the major residue that is O-GlcNAcylated on DNMT1. Functional studies further revealed that O-GlcNAcylation of DNMT1-S878 results in an inhibition of methyltransferase activity, resulting in a general loss of DNA methylation that is preferentially at partially methylated domains (PMDs). This loss of methylation corresponds with an increase in DNA damage and apoptosis. These results establish O-GlcNAcylation of DNMT1 as a mechanism through which the epigenome is regulated by glucose metabolism and implicates a role for glycosylation of DNMT1 in metabolic diseases characterized by hyperglycemia.

2023-07-26 | PXD043031 | Pride

Critical Requirement of the DNA Methyltransferase, Dnmt1, for the Development and Function of Foxp3+ Regulatory T Cells

Project description:We investigated the role of DNMT1 in immune homeostasis by generating mice lacking DNMT1 in Foxp3+ T-regulatory (Treg) cells. These mice showed decreased peripheral Foxp3+ Tregs, complete loss of Foxp3+ Treg suppressive functions in vitro and in vivo, and died from autoimmunity by 3-4 weeks unless they received perinatal transfer of wild-type Tregs that prolonged their survival. Methylation of CpG-sites in the TSDR region of Foxp3 was unaffected by DNMT1 deletion, but microarray revealed more >500 proinflammatory and other genes were upregulated in DNMT1-/- Tregs. CD4-Cre-mediated DNMT1 deletion showed inability of conventional T cells to convert to Foxp3+ Treg under appropriate polarizing conditions. Hence, DNMT1 is absolutely necessary for maintenance of the gene program required for normal Treg development and function. RNA from three independent samples of magnetically separated CD4+CD25+ Treg of fl-DNMT1/Foxp3cre mice, compared to wild type (C57BL6) control

2013-04-21 | E-GEOD-27434 | biostudies-arrayexpress

Medullary Carcinoma of the colon

Project description:This study examined the expression profile of medullary carcioma of the colon compared to adjacent histologically normal colonic mucosa.

2016-04-01 | GSE76855 | GEO

RIPSEQ DNMT1 HL60

Project description:Identification of the all RNA species associated with DNMT1. Using a comparative genome-scale approach we identified and correlated the RNA species physically associated with DNMT1 and proximal to the annotated genes to the methylation status of the corresponding loci and expression levels of the respective genes. This comparative approach delineated the first -DNMT1 centered- 'epitranscriptome' map, a comprehensive map cross-referencing DNMT1-interacting transcripts to (i) DNA methylation and (ii) gene expression profile. Relationship between DNMT1-RNA interactions, DNA methylation and gene expression

2012-12-01 | E-GEOD-32162 | biostudies-arrayexpress

Genome-wide analysis of gene expression in partial Dnmt3a deleted colon mucosa cells of APC(Min/+) mice

Project description:Analysis of gene expression in partial Dnmt3a deleted colon mucosa cells of APC(Min/+) mice. In the present study the influence of Dnmt3a deletion on colonic tumorigenesis, gene expression and DNA methylation was analyzed. Results provide important information about the role of Dnmt3a in colonic tumorigenesis.

2015-06-01 | GSE48115 | GEO

RIPSEQ DNMT1 HL60

2012-12-01 | GSE32162 | GEO

Critical Requirement of the DNA Methyltransferase, Dnmt1, for the Development and Function of Foxp3+ Regulatory T Cells

2013-04-21 | GSE27434 | GEO

Expression data from rhesus macaque colon, jejunum, and lung

Project description:The mucosa that lines the respiratory and gastrointestinal (GI) tracts is an important portal of entry for pathogens and provides the frontline of immune defense against HIV infection. Using the simian immunodeficiency virus (SIV) rhesus macaque model, we have performed a comparative analysis of host gene expression in the lung and GI mucosa in response to SIV infection and antiretroviral therapy. Microarrays were used to characterize changes in gene expression in the colonic, jejunal, and pulmonary (lung) mucosa that occur during chronic SIV infection in the presence or absence of antiretroviral therapy.

2013-11-01 | GSE51615 | GEO

Comparison of DNA methyltransferase-1 (Dnmt1) deleted urogenital sinus epithelium compared to wildtype urogenital sinus epithelium

Project description:Dnmt1 is an important regulator of tissue development and differentiation. To assess the effects of epithelium Dnmt1 deletion in the developing urogenital sinus (precursor of the urethra and prostate in males), we isolated urogenital sinus epithelial tissue from Dnmt1 deleted mouse embryos and wildtype mouse embryos. The transcriptomes were analyzed by RNA-seq

2018-12-31 | GSE121086 | GEO

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data