Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Sir2 mutants versus Controls at 2 weeks of age

ABSTRACT: Although SIRT1 plays a central role in maintaining metabolic homeostasis, the molecular mechanisms remain unclear. Here we show that loss of the Drosophila SIRT1 homolog sir2 leads to the progressive onset of diabetic phenotypes, similar to studies of SIRT1 in mice. Sir2 function is both necessary and sufficient in the fat body to maintain peripheral insulin sensitivity. This activity is mediated by the Drosophila HNF4 nuclear receptor, which is deacetylated and stabilized through protein interactions with Sir2. This study demonstrates that the key metabolic activities of SIRT1 have been conserved through evolution and establishes HNF4 as a critical downstream target.

ORGANISM(S): Drosophila melanogaster

PROVIDER: GSE72947 | GEO | 2016/02/29

SECONDARY ACCESSION(S): PRJNA295391

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Similar Datasets

Sir2 mutants versus Controls at 2 weeks of age

Project description:Although SIRT1 plays a central role in maintaining metabolic homeostasis, the molecular mechanisms remain unclear. Here we show that loss of the Drosophila SIRT1 homolog sir2 leads to the progressive onset of diabetic phenotypes, similar to studies of SIRT1 in mice. Sir2 function is both necessary and sufficient in the fat body to maintain peripheral insulin sensitivity. This activity is mediated by the Drosophila HNF4 nuclear receptor, which is deacetylated and stabilized through protein interactions with Sir2. This study demonstrates that the key metabolic activities of SIRT1 have been conserved through evolution and establishes HNF4 as a critical downstream target. 4 sir2 mutant, 4 control samples, independent biological replicates

2016-02-29 | E-GEOD-72947 | biostudies-arrayexpress

Sir2 recruitment after synchronization

Project description:To investigate the role of cell-cycle-dependent Sir2 recruitment, we collected Sir2-ChIP samples after HU treatment.

2024-01-01 | GSE222900 | GEO

Chip-chip of Sir3 and of Sir2, and ChAP-chip of AAR from budding yeast cells

Project description:O-acetyl-ADP-ribose (AAR) is a small metabolic molecule that is generated during NAD-dependent deacetylation by Sir2. Sir2 regulates gene expression, DNA repair, and genome stability. chromatin affinity-precipitation (ChAP) method was used to detect the chromatin fragments at which small molecules interact with binding partners. Chromatin immunoprecipitation of Sir3 and of Sir2, respectively, applied with tilling array chip (ChIP on chip of Sir3 and of Sir2, respectively) and Chromatin affinity-precipitation of AAR applied with tilling array chip (ChAP on chip of AAR ) analysis demonstrated that an extended spreading of Sir3 and of AAR, but not Sir2 in Saccharomyces cerevisiae Ysa1 deleted cells compared with those in wild type cells Comparison the distributions of Sir3, of Sir2 and of AAR on silent heterochromatin of Ysa1 deletion cells vs those of wild type cells

2015-12-31 | E-GEOD-65672 | biostudies-arrayexpress

Chip-chip of Sir3 and of Sir2, and ChAP-chip of AAR from budding yeast cells

2015-12-31 | GSE65672 | GEO

P.falciparum strain 3D7, SIR2 knockout

Project description:This experiment studies the effect of knocking out the transcriptional regulator SIR2 in 3D7 parasites. RNA was harvested from ring-stage parasites at 8 hours post-infection. Keywords = SIR2 Keywords = epigenetic regulation Keywords = antigenic variation Keywords = var Keywords = Plasmodium falciparum Keywords: other

2005-03-08 | GSE2369 | GEO

Sir2-family of histone deacetylase regulated gene expression in Candida glabrata

Project description:Sir2-family of NAD-dependent histone deacetylases are involved in gene transcription repression in yeast. The C. glabrata genes encoding members of this family are SIR2 (CAGL0K01463g), HST1 (CAGL0C05357g), HST2 (CAGL0L08668g), HST3 (CAGL0H08239g) and HST4 (CAGL0F05621g). SIR4 (CAGL0K11396g) encodes a factor that forms a functional complex with Sir2. In this experiment, the transcription profile of C. glabrata HST1 null, HST2 null, SIR2 null or SIR4 null strain individually comparing with that of wild type strain was determined. All strains were grown in YPD liquid medium in Log phase at 30 C. Keywords: transcriptional profiling by microarray

2007-01-04 | GSE6626 | GEO

Rap1, Sir2, Sir3, Sir4 immunoprecipitations

Project description:All Rap1, Sir2, Sir3, Sir4, and mock immunoprecipitation experiments associated with Lieb et al. Nature Genetics, August 2001, Volume 28, Issue 4 Set of arrays organized by shared biological context, such as organism, tumors types, processes, etc. Computed

2005-09-24 | E-GEOD-3360 | biostudies-arrayexpress

Sir2 and Hst1 ChIP-Seq in Saccharomyces cerevisiae

Project description:Chromatin Immunoprecipitation followed by high throughput sequencing to identify the location of Sir2 and Hst1 genomic enrichment.

2020-05-01 | GSE84552 | GEO

Rap1, Sir2, Sir3, Sir4 immunoprecipitations

2005-09-24 | GSE3360 | GEO

The transcriptomic changes affected by BDF2 and SIR2 under salt stress

Project description:The strain bdf1∆bdf2∆[BDF2 L][SIR2 H] improved salt resistance of bdf1∆. To gain further insight into the mechanism of BDF1 in suppressing bdf1∆ salt sensitivity, DNA microarray analysis was performed to determine the reason for the salt sensitivity of bdf1∆ cells and the process of how coexpression of SIR2 and BDF2 improves salt resistance. Transcriptomic analysis under salt treatment (0.6 mol.L-1 NaCl for 45 min) was performed using three different strains: bdf1∆bdf2∆[BDF2 L][SIR2 H], bdf1∆bdf2∆[BDF2 L][pYX242] and bdf1∆[pRS316][pYX242]. The transcription of 3244 genes were significantly changed( > 2-fold) in bdf1∆bdf2∆[BDF2 L][SIR2 H] compared with bdf1∆[pRS316][pYX242] upon NaCl stress (0.6 mol.L-1 NaCl for 45 min). Only 281 genes were significantly changed ( > 2-fold) in bdf1∆bdf2∆[BDF2 L][pYX242] compared with bdf1∆[pRS316][pYX242] upon NaCl stress (0.6 mol∙L-1 NaCl for 45 min). BF2:bdf1∆[pRS316][pYX242]. BF2B: bdf1∆bdf2∆[BDF2 L][pYX242]. BF2S:bdf1∆bdf2∆[BDF2 L][SIR2 H].

2014-05-26 | GSE47367 | 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