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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Gene expression analysis in the hippocampus of SUMO1 and SUMO2 transgenic mice

ABSTRACT: Transgenic mouse lines that express His6-SUMO1 and His6-SUMO2 under the control of the neuron specific Thy1.2 promoter were generated and characterized. The effect of increased levels of SUMO1 and -2 at the level of gene expression in the hippocampus was studied. Pooled (left and right) hippocampi were dissected from adult littermate wild-type control (WT1) and SUMO1 and WT2 and SUMO2 transgenic animals (n=3) and subjected to RNA expression analysis.

ORGANISM(S): Mus musculus

SUBMITTER: Moritz Rossner

PROVIDER: E-GEOD-47951 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Gene expression analysis in the hippocampus of SUMO1 and SUMO2 transgenic mice

Project description:Transgenic mouse lines that express His6-SUMO1 and His6-SUMO2 under the control of the neuron specific Thy1.2 promoter were generated and characterized. The effect of increased levels of SUMO1 and -2 at the level of gene expression in the hippocampus was studied.

2013-12-31 | GSE47951 | GEO

Transcriptomics analysis of SUMO1 and SUMO2 U2OS knockout (KO) cell lines

Project description:CRISPR-Cas9 was used to individually knock out SUMO1 and SUMO2 expression in U2OS cells. The transcriptomes of SUMO1 and SUMO2 knockout (KO) cell lines were analyzed using RNA-sequencing.

2021-12-07 | GSE163884 | GEO

SUMO and RNAPolII chromatin profiling in SUMOylation-competent and -deficient bone marrow derived dendritic cells unstimulated or stimulated with LPS

Project description:Purpose: To determine SUMO1 and SUMO2 chromatin profile in a static and dynamic manner in BMDC before and after LPS stimulation, and to determine RNAPolII chromatin occupancy in sumoylation-deficient BMDC compared to wild-type cells. Methods: SUMO1, SUMO2 and RNAPolII chromatin profiles were determined by sequencing BMDC chromatin immunoprecipitated with antibodies specific for SUMO1, SUMO2 and RNAPolII before and after LPS stimulation. Results: We show dynamic occupancy of three distal sites upstream of Ifnb1 gene by SUMO1 and SUMO2, as well as increased RNAPolII recruitment on selected genes. Conclusions: SUMO acts as a regulator of inflammatory and anti-viral gene programs.

2015-12-14 | GSE66315 | GEO

SUMO and RNAPolII chromatin profiling in SUMOylation-competent and -deficient bone marrow derived dendritic cells unstimulated or stimulated with LPS

2015-12-14 | E-GEOD-66315 | biostudies-arrayexpress

Transcriptomics analysis of SUMO1 and SUMO2 U2OS knockout (KO) cell lines

Project description:Transcriptomics analysis of SUMO1 and SUMO2 U2OS knockout (KO) cell lines

| PRJNA688071 | ENA

Ubc9 overexpression and SUMO1 deficiency blunt inflammation after intestinal ischemia/reperfusion.

Project description:The intestinal epithelium constitutes a crucial defense to the potentially life-threatening effects of gut microbiota. However, due to a complex underlying vasculature, hypoperfusion and resultant tissue ischemia pose a particular risk to function and integrity of the epithelium. The small ubiquitin-like modifier (SUMO) conjugation pathway critically regulates adaptive responses to metabolic stress and is of particular significance in the gut, as inducible knockout of the SUMO-conjugating enzyme Ubc9 results in rapid intestinal epithelial disintegration. Here we analyzed the pattern of individual SUMO isoforms in intestinal epithelium and investigated their roles in intestinal ischemia/reperfusion (I/R) damage. Immunostaining revealed that epithelial SUMO2/3 expression was almost exclusively limited to crypt epithelial nuclei in unchallenged mice. However, intestinal I/R or overexpression of Ubc9 caused a remarkable enhancement of epithelial SUMO2/3 staining along the crypt-villus axis. Unexpectedly, a similar pattern was found in SUMO1 knockout mice. Ubc9 transgenic mice, but also SUMO1 knockout mice were protected from I/R injury as evidenced by better preserved barrier function and blunted inflammatory responses. PCR array analysis of microdissected villus-tip epithelia revealed a specific epithelial contribution to reduced inflammatory responses in Ubc9 transgenic mice, as key chemotactic signaling molecules such as IL17A were significantly downregulated. Together, our data indicate a critical role particularly of the SUMO2/3 isoforms in modulating responses to I/R and provide the first evidence that SUMO1 deletion activates a compensatory process that protects from ischemic damage.

2018-11-07 | GSE96733 | GEO

Mus musculus

Project description:Gene expression analysis in the hippocampus of SUMO1 and SUMO2 transgenic mice

| PRJNA208440 | ENA

Effect of Sumo2 deletion on gene expression in the mouse brain

Project description:Mounting evidence indicates that small ubiquitin-like modifier (SUMO) conjugation regulates a wide range of neuronal functions and participates in learning and memory processes. Since many SUMO targets are transcription factors as well as other nuclear proteins modulating gene expression and SUMO2 is the predominant SUMO isoform, we aimed to identify how SUMO2 regualtes gene expression in the brain in order to better understand the role of SUMOylation in the brain fucntcion. In this study, we peformed RNA-Seq anaysis on hippocampus from SUMO2 conditional knockout mice.

2020-07-01 | GSE108196 | GEO

SUMO2 ChIP-seq in U2OS cells

Project description:Chromatin immuno-precipitation using SUMO2 (Life Technologies) antibody in U2OS cell line.

2015-08-07 | E-MTAB-3084 | biostudies-arrayexpress

A serial screen for roadblocks to reprogramming identifies the sumoylation effector protein Sumo2

Project description:The generation of induced pluripotent stem cells (iPSCs) from differentiated cells following forced expression of Oct4, Klf4, Sox2 and c-Myc (OKSM) is slow and inefficient, suggesting that transcription factors have to overcome somatic barriers that resist cell fate change. Here, we performed an ubiased serial shRNA enrichment screen to identify novel repressors of somatic cell reprogramming into iPSCs. This effort uncovered the sumoylation effector protein Sumo2 as one of the strongest roadblocks to iPSC formation. Depletion of Sumo2 both enhances and accelerates reprogramming, yielding transgene-independent, chimera-competent iPSCs after as little as 36 hours of OKSM expression. We further show that the Sumo2 pathway acts independently of exogenous c-Myc expression and in parallel with small molecule enhancers of reprogramming. Critically, suppression of SUMO2 also promotes the generation of human iPSCs. Together, our results reveal sumoylation as a crucial post-transcriptional mechanism that resists the acquisition of pluripotency from fibroblasts using defined factors. Microarray analysis was performed during reprogramming or of iPSC lines derived upon Sumo2 knockdown

2016-03-03 | GSE76699 | GEO

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