The Cytosine Deaminase AICDA Regulates FGF/ERK Signaling to Achieve the Naïve Pluripotent State During Reprogramming.
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ABSTRACT:
PROVIDER: PRJNA530550 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:This SuperSeries is composed of the SubSeries listed below.
2019-04-03 | GSE129223 | GEO
Project description:We report AICDA facilitates naïve pluripotency of mouse iPSCs by suppressing FGF/ERK signaling. In the absence of AICDA iPSCs fail to achive naïve pluripotent state and display chracteristics of EpiSCs and are primed for differentiation.
2019-04-03 | GSE129186 | GEO
Project description:We report AICDA facilitates naïve pluripotency of mouse iPSCs by suppressing FGF/ERK signaling. In the absence of AICDA iPSCs fail to achive naïve pluripotent state and display chracteristics of EpiSCs and are primed for differentiation.
2019-04-03 | GSE129187 | GEO
Project description:Epigenetic heterogeneity is emerging as a significant phenotypic feature of tumors. In diffuse large B-cell lymphomas (DLBCLs), increased cytosine methylation heterogeneity is associated with poor clinical outcome, yet the biological mechanisms driving epigenetic heterogeneity remain unclear. Activation-induced cytidine deaminase (AICDA), an enzyme that deaminates and facilitates demethylation of DNA methyl-cytosines in germinal center (GC) B-cells, is required for DLBCL pathogenesis and linked to inferior clinical outcomes. Here, we show that overexpression of AICDA causes more aggressive disease and worse outcome in BCL2-driven murine lymphomas. This phenotype was associated with significantly increased focal inter-tumor and intra-tumor cytosine methylation heterogeneity as compared to control lymphomas, but not with increased mutational burden. AICDA-mediated epigenetic heterogeneity was accompanied by DNA hypomethylation. Reciprocally, we observed that the focal inter-individual and intra-individual cytosine methylation heterogeneity characteristic of normal GC B-cells was lost upon depletion of AICDA. There was significant overlap of AICDA-induced methylation heterogeneity foci in GC B-cells and murine lymphomas. These observations are relevant to human patients, since DLBCLs with high AICDA expression likewise manifest extensive increases in focal inter-patient and intra-patient heterogeneity as compared to DLBCLs with low AICDA expression. Affected regions significantly overlapped with those found in murine AICDA-overexpressing lymphomas. Our results identify AICDA as a novel source of epigenetic plasticity and heterogeneity in B-cell lymphomas with potential significance for other tumors that express cytosine deaminases.
2018-01-19 | GSE95013 | GEO
Project description:We determined CpG methylation load from GC B cells obtained from both Aicda-/- and Aicda+/+ mice. Examination of methylation load of Aicda-/- and Acida+/+ GC B cells.
2013-06-07 | E-GEOD-47704 | biostudies-arrayexpress
Project description:TET enzymes are dioxygenases that promote DNA demethylation by oxidizing the methyl group of 5-methylcytosine (5mC) to 5-hydroxymethylcytosine (5hmC). Here we report a close correspondence between 5hmC-marked regions, chromatin accessibility and enhancer activity in B cells, and a strong enrichment for consensus binding motifs for basic region-leucine zipper (bZIP) transcription factors at TET-responsive genomic regions. Functionally, Tet2 and Tet3 regulate class switch recombination (CSR) in murine B cells by enhancing expression of Aicda, encoding the cytidine deaminase AID essential for CSR. TET enzymes deposit 5hmC, demethylate and maintain chromatin accessibility at two TET-responsive elements, TetE1 and TetE2, located within a superenhancer in the Aicda locus. Transcriptional profiling identified BATF as the bZIP transcription factor involved in TET-dependent Aicda expression. 5hmC is not deposited at TetE1 in activated Batf-deficient B cells, indicating that BATF recruits TET proteins to the Aicda enhancer. Our data emphasize the importance of TET enzymes for bolstering AID expression, and highlight 5hmC as an epigenetic mark that captures enhancer dynamics during cell activation.
2019-04-29 | GSE116206 | GEO
Project description:TET enzymes are dioxygenases that promote DNA demethylation by oxidizing the methyl group of 5-methylcytosine (5mC) to 5-hydroxymethylcytosine (5hmC). Here we report a close correspondence between 5hmC-marked regions, chromatin accessibility and enhancer activity in B cells, and a strong enrichment for consensus binding motifs for basic region-leucine zipper (bZIP) transcription factors at TET-responsive genomic regions. Functionally, Tet2 and Tet3 regulate class switch recombination (CSR) in murine B cells by enhancing expression of Aicda, encoding the cytidine deaminase AID essential for CSR. TET enzymes deposit 5hmC, demethylate and maintain chromatin accessibility at two TET-responsive elements, TetE1 and TetE2, located within a superenhancer in the Aicda locus. Transcriptional profiling identified BATF as the bZIP transcription factor involved in TET-dependent Aicda expression. 5hmC is not deposited at TetE1 in activated Batf-deficient B cells, indicating that BATF recruits TET proteins to the Aicda enhancer. Our data emphasize the importance of TET enzymes for bolstering AID expression, and highlight 5hmC as an epigenetic mark that captures enhancer dynamics during cell activation.
2019-04-29 | GSE116205 | GEO
Project description:TET enzymes are dioxygenases that promote DNA demethylation by oxidizing the methyl group of 5-methylcytosine (5mC) to 5-hydroxymethylcytosine (5hmC). Here we report a close correspondence between 5hmC-marked regions, chromatin accessibility and enhancer activity in B cells, and a strong enrichment for consensus binding motifs for basic region-leucine zipper (bZIP) transcription factors at TET-responsive genomic regions. Functionally, Tet2 and Tet3 regulate class switch recombination (CSR) in murine B cells by enhancing expression of Aicda, encoding the cytidine deaminase AID essential for CSR. TET enzymes deposit 5hmC, demethylate and maintain chromatin accessibility at two TET-responsive elements, TetE1 and TetE2, located within a superenhancer in the Aicda locus. Transcriptional profiling identified BATF as the bZIP transcription factor involved in TET-dependent Aicda expression. 5hmC is not deposited at TetE1 in activated Batf-deficient B cells, indicating that BATF recruits TET proteins to the Aicda enhancer. Our data emphasize the importance of TET enzymes for bolstering AID expression, and highlight 5hmC as an epigenetic mark that captures enhancer dynamics during cell activation.
2019-04-29 | GSE116204 | GEO
Project description:TET enzymes are dioxygenases that promote DNA demethylation by oxidizing the methyl group of 5-methylcytosine (5mC) to 5-hydroxymethylcytosine (5hmC). Here we report a close correspondence between 5hmC-marked regions, chromatin accessibility and enhancer activity in B cells, and a strong enrichment for consensus binding motifs for basic region-leucine zipper (bZIP) transcription factors at TET-responsive genomic regions. Functionally, Tet2 and Tet3 regulate class switch recombination (CSR) in murine B cells by enhancing expression of Aicda, encoding the cytidine deaminase AID essential for CSR. TET enzymes deposit 5hmC, demethylate and maintain chromatin accessibility at two TET-responsive elements, TetE1 and TetE2, located within a superenhancer in the Aicda locus. Transcriptional profiling identified BATF as the bZIP transcription factor involved in TET-dependent Aicda expression. 5hmC is not deposited at TetE1 in activated Batf-deficient B cells, indicating that BATF recruits TET proteins to the Aicda enhancer. Our data emphasize the importance of TET enzymes for bolstering AID expression, and highlight 5hmC as an epigenetic mark that captures enhancer dynamics during cell activation.
2019-04-29 | GSE116203 | GEO
Project description:TET enzymes are dioxygenases that promote DNA demethylation by oxidizing the methyl group of 5-methylcytosine (5mC) to 5-hydroxymethylcytosine (5hmC). Here we report a close correspondence between 5hmC-marked regions, chromatin accessibility and enhancer activity in B cells, and a strong enrichment for consensus binding motifs for basic region-leucine zipper (bZIP) transcription factors at TET-responsive genomic regions. Functionally, Tet2 and Tet3 regulate class switch recombination (CSR) in murine B cells by enhancing expression of Aicda, encoding the cytidine deaminase AID essential for CSR. TET enzymes deposit 5hmC, demethylate and maintain chromatin accessibility at two TET-responsive elements, TetE1 and TetE2, located within a superenhancer in the Aicda locus. Transcriptional profiling identified BATF as the bZIP transcription factor involved in TET-dependent Aicda expression. 5hmC is not deposited at TetE1 in activated Batf-deficient B cells, indicating that BATF recruits TET proteins to the Aicda enhancer. Our data emphasize the importance of TET enzymes for bolstering AID expression, and highlight 5hmC as an epigenetic mark that captures enhancer dynamics during cell activation.
2019-04-29 | GSE116202 | GEO