Browse
Submit Data
Databases
API
Help

Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

12 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Regulation of B cell early development by CNOT3

ABSTRACT: The CCR4-NOT complex, bearing poly(A) deadenylation activity, is a highly conserved regulator that is involved in biological control; however its action mechanisms and physiological targets remain unclear. Using genetic deletion of the CNOT3 subunit of this complex in early B cell progenitors, we show that CNOT3 plays a critical role in pro- to pre-B cell transition. CNOT3 participated in controlling germline transcription, compaction of the immunoglobulin heavy chain (Igh) locus, and Igh rearrangement, and in destabilizing tumor suppressor p53 mRNA. Moreover, by genetic ablation of p53 or introduction of pre-rearranged Igh transgene, the B cell developmental defect in the Cnot3 knockout background could be partly rescued, suggesting that CCR4-NOT complex exerts critical control in B cell differentiation processes by co-utilizing transcriptional and post-transcriptional mechanisms. Pro-B cells mRNA profiles of Mb1(cre/+) and Cnot3(fl/fl)Mb1(cre/+) mice were generated by deep sequencing using Illumina HiSeq 1500

ORGANISM(S): Mus musculus

SUBMITTER: Osamu Ohara

PROVIDER: E-GEOD-64455 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

ACCESS DATA

Json Xml

Similar Datasets

Regulation of B cell early development by CNOT3

Project description:The CCR4-NOT complex, bearing poly(A) deadenylation activity, is a highly conserved regulator that is involved in biological control; however its action mechanisms and physiological targets remain unclear. Using genetic deletion of the CNOT3 subunit of this complex in early B cell progenitors, we show that CNOT3 plays a critical role in pro- to pre-B cell transition. CNOT3 participated in controlling germline transcription, compaction of the immunoglobulin heavy chain (Igh) locus, and Igh rearrangement, and in destabilizing tumor suppressor p53 mRNA. Moreover, by genetic ablation of p53 or introduction of pre-rearranged Igh transgene, the B cell developmental defect in the Cnot3 knockout background could be partly rescued, suggesting that CCR4-NOT complex exerts critical control in B cell differentiation processes by co-utilizing transcriptional and post-transcriptional mechanisms.

2015-07-23 | GSE64455 | GEO

Expression data from mouse embryonic fibroblasts

Project description:In addition to transcriptional regulation, mRNA degradation critically contributes to gene expression as shown by various biological analysis. The CCR4-NOT complex serves as a major deadenylase that initiates mRNA degradation. We used microarrays to identify CCR4-NOT targets by searching for genes specifically stablized in the absence of CNOT3, a core subunit of the CCR4-NOT complex. Primary mouse embryonic fibroblasts (MEFs) were used for RNA extraction and hybridization on Affymetrix microarrays. CNOT3-knockdown MEFs were generated by Cre-mediated somatic recombination. We treated both control and CNOT-knockdown (CNOT3KD) MEFs with a transcriptional inhibitor, actinomycin D to focus on a stability of mRNAs.

2015-09-01 | E-GEOD-67418 | biostudies-arrayexpress

RNA-seq of mouse islets from Ins1-cre driven Cnot3 KO and control islets

Project description:The CCR4-NOT dedadenylase complex is essential for mRNA decay and various biological events.To understand roles of the complex in pancreatic beta cells, we compared global gene expression in Ins1-cre driven Cnot3 KO and control islets. Cnot3 is an important subunit of the complex and its knockout affects the complex activity.

2020-08-29 | E-MTAB-8729 | biostudies-arrayexpress

Expression data from the liver of wild-type and Cnot3+/- mice: Fed vs Fasted

Project description:Decay of mRNAs initiates with shortening of the poly(A) tail. Although the CCR4-NOT complex participates in deadenylation, how it becomes activates remain obscure. We show that complete deficiency in CNOT3, subunit 3 of this complex, is lethal in mice, but that heterozygotes survive as lean mice with hepatic and adipose tissues containing reduced lipid levels. Cnot3+/- mice have enhanced metabolic rates and remain lean on high-fat diets. We further provide evidence suggesting that CNOT3, by changing its level in response to feeding conditions, affects the activity of the CCR4-NOT deadenylase against poly(A) tails of specific mRNAs coding for proteins involved in metabolism of carbohydrates and fats. Because the levels of CNOT3 protein were decreased under fasting conditions and increased upon refeeding and because CNOT3 could be a positive regulator of the CCR4-NOT deadenylase, we hypothesized that the levels of CCR4-NOT target mRNAs would be lower in fed mice than in fasted mice. We compared the gene expression profiles of fed and fasted wild-type mice. Microarray analysis revealed that approximately 1,200 mRNA transcripts were down-regulated in the livers of fed mice. Of these mRNAs, 68 corresponded to the genes up-regulated in the livers of Cnot3+/- mice and fasted wild-type mice. A large number of the 68 identified genes encoded proteins involved in metabolism, especially lipid metabolism and growth. The livers were isolated from 8-week-old fed wild-type, fasted wild-type and fasted Cnot3+/- mice (n = 2 for each genotype).

2011-12-09 | E-GEOD-18925 | biostudies-arrayexpress

Expression data from A549 human lung adenocarcinoma cells with and without knockdown against CNOT3

Project description:The physiological importance of mRNA degradation through the CCR4-NOT deadenylase has recently been highlighted. For example, mutation in CNOT3, a gene coding for sCNOT3 subunit of the CCR4-NOT complex, is found to be associated with T-cell acute lymphoblastic leukemia, T-ALL, though its contribution to other cancers has not been reported. To identify the taget mRNAs of CNOT3 in human non-small cell lung cancer (NSCLC), we performed the microarray analysis using A549 cells with and without knockdown against CNOT3.

2021-05-19 | GSE114694 | GEO

Expression data from embryonic day 16.5 or postnatal day 3 mouse liver

Project description:mRNA degradation critically contributes to liver development and function. The CCR4-NOT complex serves as a major deadenylase that initiates mRNA degradation. We used microarrays to identify deregulated genes in the livers lacking Cnot3, a core subunit of the CCR4-NOT complex.

2019-02-21 | GSE120910 | GEO

Expression data from 4-week-old mouse liver

2019-02-21 | GSE114508 | GEO

Expression data from 1-week-old mouse liver

2019-02-21 | GSE114507 | GEO

Expression data from fetal hepatocytes from control or Cnot3KO E16.5 embryos treated with Actinomycin D for 0, 6 or 12h

Project description:mRNA degradation critically contributes to liver development and function. The CCR4-NOT complex serves as a major deadenylase that initiates mRNA degradation. We used microarrays to identify abnormally stabilized mRNAs in the fetal hepatocytes lacking Cnot3, a core subunit of the CCR4-NOT complex.

2019-02-21 | GSE120911 | GEO

Expression data from mouse embryonic fibroblasts

2015-09-01 | GSE67418 | 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