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Expression data from normal thymocytes, 24 day pre-tumor Dnmt3b-deficient thymocytes, Wild-Type Tumors, and Dnmt3b-deficient Tumors

ABSTRACT: Dnmt3b is a DNA methytransferase which is an enzyme that methylated genomic DNA which contributes to genomic stability and transcriptional regulation. We genetically inactivated Dnmt3b in the hematopoeitic compartment in the context of MYC overexpression and analysed the resulting thymic lymphomas.

ORGANISM(S): Mus musculus

SUBMITTER: Ryan Hlady

PROVIDER: E-GEOD-30126 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Loss of Dnmt3b function upregulates the tumor modifier Ment and accelerates mouse lymphomagenesis.

Hlady Ryan A RA Novakova Slavomira S Opavska Jana J Klinkebiel David D Peters Staci L SL Bies Juraj J Hannah Jay J Iqbal Javeed J Anderson Kristi M KM Siebler Hollie M HM Smith Lynette M LM Greiner Timothy C TC Bastola Dhundy D Joshi Shantaram S Lockridge Oksana O Simpson Melanie A MA Felsher Dean W DW Wagner Kay-Uwe KU Chan Wing C WC Christman Judith K JK Opavsky Rene R

The Journal of clinical investigation 20111201 1

DNA methyltransferase 3B (Dnmt3b) belongs to a family of enzymes responsible for methylation of cytosine residues in mammals. DNA methylation contributes to the epigenetic control of gene transcription and is deregulated in virtually all human tumors. To better understand the generation of cancer-specific methylation patterns, we genetically inactivated Dnmt3b in a mouse model of MYC-induced lymphomagenesis. Ablation of Dnmt3b function using a conditional knockout in T cells accelerated lymphoma ...[more]

PMID: 22133874

Similar Datasets

Methylation data from normal thymocytes, 24 day pre-tumor Dnmt3b-deficient thymocytes, Wild-Type Tumors, and Dnmt3b-deficient Tumors

Project description:Dnmt3b is a DNA methytransferase which is an enzyme that methylated genomic DNA which contributes to genomic stability and transcriptional regulation. We genetically inactivated Dnmt3b in the hematopoeitic compartment in the context of MYC overexpression and analysed the resulting thymic lymphomas.

2011-11-21 | E-GEOD-33849 | biostudies-arrayexpress

Methylation data from normal thymocytes, 24 day pre-tumor Dnmt3b-deficient thymocytes, Wild-Type Tumors, and Dnmt3b-deficient Tumors

Project description:Dnmt3b is a DNA methytransferase which is an enzyme that methylated genomic DNA which contributes to genomic stability and transcriptional regulation.

2011-11-21 | GSE33849 | GEO

Expression data from normal thymocytes, 24 day pre-tumor Dnmt3b-deficient thymocytes, Wild-Type Tumors, and Dnmt3b-deficient Tumors

Project description:Dnmt3b is a DNA methytransferase which is an enzyme that methylated genomic DNA which contributes to genomic stability and transcriptional regulation.

2012-02-22 | GSE30126 | GEO

DNMT3B PWWP mutations cause hypermethylation of heterochromatin (T7-DNMT3B ChIP-seq)

Project description:The correct establishment of DNA methylation patterns is vital for mammalian development and is achieved by the de novo DNA methyltransferases DNMT3A and DNMT3B. DNMT3B localises to H3K36me3 at actively transcribing gene bodies through its PWWP domain. It also functions at heterochromatin through an unknown recruitment mechanism. Here we find that knockout of DNMT3B causes losses of methylation predominantly at H3K9me3-marked heterochromatin and that DNMT3B PWWP domain mutations or deletion result in striking increases of methylation in H3K9me3-marked heterochromatin. Removal of the N-terminal region of DNMT3B affects its ability to methylate H3K9me3-marked regions. This region of DNMT3B directly interacts with HP1-alpha and facilitates the bridging of DNMT3B with H3K9me3-marked nucleosomes in vitro. Our results suggest that DNMT3B is recruited to H3K9me3 marked heterochromatin in a PWWP-independent manner that is facilitated by the protein's N-terminus through an interaction with a key heterochromatin protein. More generally, we suggest that DNMT3B plays a role in DNA methylation homeostasis at heterochromatin, a process which is disrupted in cancer, aging and Immunodeficiency, Centromeric Instability and Facial Anomalies (ICF) syndrome.

2024-01-22 | GSE244516 | GEO

DNA methylation analysis and expression profiling during murine embryogenesis and in embryos deficient for DNMT3A or DNMT3B

Project description:We quantified the targets and kinetics of DNA methylation acquisition in mouse embryos, and determined the contribution of the de novo methyltransferases DNMT3A and DNMT3B to this process. We provide single-base maps of cytosine methylation by RRBS from the blastocysts to post-implantation stages and in embryos lacking DNMT3A or DNMT3B activity, and performed RNA-Seq in embryos lacking DNMT3B activity. We sequenced RRBS libraries prepared from genomic DNA isolated from embryos at consecutive stages of development between E3.5 and E11.5,and adult differentiated cells (sperm, liver). We performed RRBS on blastocysts at E3.5/E4.5, dissected epiblasts at E5.5/E6.5/E7/5, whole embryos at E8.5/E10.5 and limbs at E11.5. RRBS experiments in Dnmt3a-/- and Dnmt3b-/- embryos were performed in biological duplicates on individual embryos. We sequenced RNA-Seq libraries prepared from total RNAs of three WT and Dnmt3b-/- littermate embryos collected at E8.5.

2014-11-14 | E-GEOD-60334 | biostudies-arrayexpress

DNA methylation analysis and expression profiling during murine embryogenesis and in embryos deficient for DNMT3A or DNMT3B

2014-11-14 | GSE60334 | GEO

Methylation and gene expression data from Dnmt3b+/+, Dnmt3b-/- and Dnmt3bCI/CI embryos harvested at E11.5

Project description:Dnmt3b is a DNA methyltransferase, an enzyme which methylates genomic DNA, contributes to genomic stability and transcriptional regulation. Inactivation of Dnmt3b in mice results in embryonic lethality at E13.5. It is however unclear which activities are responsible for this phenomenon. Here, we analyzed methylation and gene expression in Dnmt3b+/+ (WT), Dnmt3b-/- (3bKO) and Dnmt3bCI/CI (3bKI) embryos at E11.5.

2019-08-19 | GSE132952 | GEO

DNMT3B PWWP mutations cause hypermethylation of heterochromatin (T7-DNMT3B ChIP-seq)

Project description:DNMT3B PWWP mutations cause hypermethylation of heterochromatin (T7-DNMT3B ChIP-seq)

| PRJNA1023455 | ENA

Increased DNA Methylation of Dnmt3b-Targets Impairs Leukemogenesis (RRBS)

Project description:The de novo DNA methyltransferases Dnmt3a and Dnmt3b are of crucial importance in hematopoietic stem cells, and Dnmt3b has recently been shown to play a role in genic methylation. Forced Dnmt3b expression induced widespread DNA hypermethylation in myc-bcl2 induced leukemias, especially at promoters and gene bodies of stem cell-related genes. MLL-AF9 induced leukemogenesis showed much less pronounced DNA hypermethylation upon Dnmt3b expression. Nonetheless, leukemogenesis was delayed in both models with a shared core set of DNA hypermethylated regions and suppression of stem cell-related genes. Our findings indicate a critical role for Dnmt3b-mediated DNA methylation in leukemia development and maintenance of LSC function. To investigate how Dnmt3b-mediated DNA methylation affects leukemogenesis, we analyzed leukemia development under conditions of high and physiological methylation levels in a tetracycline-inducible knockin mouse model. High expression of Dnmt3b slowed leukemia development in serial transplantations and impaired leukemia stem cell (LSC) function.

2016-01-11 | E-GEOD-71039 | biostudies-arrayexpress

DNMT3B PWWP mutations cause hypermethylation of heterochromatin (WGBS)

2024-01-22 | GSE244517 | GEO