Arabidopsis thaliana
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ABSTRACT:
OTHER RELATED OMICS DATASETS IN: E-GEOD-66419
PROVIDER: PRJNA276853 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Mitogen-activated dual-specificity MAPK phosphatases are important negative regulators in the MAPK signalling pathways responsible for many essential processes in plants. In a screen for mutants with reduced organ size we have identified a mutation in the active site of the dual-specificity MAPK phosphatase INDOLE-3-BUTYRIC ACID-RESPONSE5 (IBR5) that we named tinkerbell (tink) due to its small size. Analysis of the tink mutant indicates that IBR5 acts as a novel regulator of organ size that changes the rate of growth in petals and leaves. Organ size and shape regulation by IBR5 acts independently of the KLU growth-regulatory pathway. Microarray analysis of tink/ibr5-6 mutants identified a likely role for this phosphatase in male gametophyte development. We show that IBR5 may influence the size and shape of petals through auxin and TCP growth regulatory pathways. 6 samples, three mutant replicates, three wild type replicates.
2015-07-30 | E-GEOD-66419 | biostudies-arrayexpress
Project description:Mitogen-activated dual-specificity MAPK phosphatases are important negative regulators in the MAPK signalling pathways responsible for many essential processes in plants. In a screen for mutants with reduced organ size we have identified a mutation in the active site of the dual-specificity MAPK phosphatase INDOLE-3-BUTYRIC ACID-RESPONSE5 (IBR5) that we named tinkerbell (tink) due to its small size. Analysis of the tink mutant indicates that IBR5 acts as a novel regulator of organ size that changes the rate of growth in petals and leaves. Organ size and shape regulation by IBR5 acts independently of the KLU growth-regulatory pathway. Microarray analysis of tink/ibr5-6 mutants identified a likely role for this phosphatase in male gametophyte development. We show that IBR5 may influence the size and shape of petals through auxin and TCP growth regulatory pathways.
2015-07-30 | GSE66419 | GEO
Project description:The MAPK-specific phosphatase, dual-specificity phosphatase-2 (DUSP2), was negatively regulated by HIF-1a under hypoxia. To identify the downstream genes regulated by DUSP2, microarray analysis was performed. Agilent two color microarray was used to examine the molecular profile after DUSP2 overexpression
2015-09-30 | GSE66656 | GEO
Project description:Dual-specificity phosphatase 6 (DUSP6), a member of MAPK phosphatase, serves a specific and conserved function on the dephosphorylation of extracellular signal-regulated kinase 1/2 (ERK1/2) in multiple species. Utilizing a rat strain harboring nonsense mutation of Dusp6, we found that Dusp6 deficiency improves cardiac function by attenuating cardiomyocyte death and fibrosis in acute inflammatory phase after MI. To investigate the effect of DUSP6 on macrophages in acute inflammatory phase of MI, we performed RNA-seq analysis using CD45+HIS36+ macrophages isolated from Dusp6-deficient and WT infarcted LV tissues 72 h after MI by fluorescent activated cell sorting (FACS).
2022-07-13 | GSE195978 | GEO
Project description:Activation of the Mitogen activated protein kinase (MAPK) cascade following Toll-like receptor (TLR) stimulation enables innate immune cells to rapidly activate cytokine gene expression. A balanced response to signals of infectious danger requires that cellular activation is transient. Here, we identify the MAPK phosphatase Dual specificity phosphatase-1 (DUSP1) as an essential endogenous regulator of the inflammatory response to LPS. DUSP1-deficient (DUSP1-/-) bone marrow derived macrophages showed selectively prolonged activation of p38 MAPK and increased cytokine production. Intraperitoneal challenge of DUSP1-/- mice with LPS caused increased lethality and overshooting production of IL-6 and TNF. Transcriptional profiling revealed that DUSP1 controls a significant fraction of LPS-induced genes, that includes IL-6 and IL-10 as well as the chemokines CCL3, CCL4 and CXCL2. In contrast, the expression of the important mediators of endotoxin lethality, IFN? and IL-12, was not significantly altered by the absence of DUSP1. These data together demonstrate a specific regulatory role of DUSP1 in controlling a subset of LPS-induced genes that determines the outcome of endotoxin shock. Experiment Overall Design: Mice were injected intraperitoneally with E. coli LPS (10µg/g bodyweight) and sacrificed 6h later. Total spleen RNA (5 µg) was prepared, labeled and hybridized to Affymetrix MOE430A 2.0 GeneChips according to the manufacturer's instructions. Three biological replicates per condition were analysed. CEL Files were processed for global normalization and generation of expression values using the rma algorithm in the R affy package (www.bioconductor.org).
2007-11-01 | E-GEOD-3565 | biostudies-arrayexpress
Project description:Activation of the Mitogen activated protein kinase (MAPK) cascade following Toll-like receptor (TLR) stimulation enables innate immune cells to rapidly activate cytokine gene expression. A balanced response to signals of infectious danger requires that cellular activation is transient. Here, we identify the MAPK phosphatase Dual specificity phosphatase-1 (DUSP1) as an essential endogenous regulator of the inflammatory response to LPS. DUSP1-deficient (DUSP1-/-) bone marrow derived macrophages showed selectively prolonged activation of p38 MAPK and increased cytokine production. Intraperitoneal challenge of DUSP1-/- mice with LPS caused increased lethality and overshooting production of IL-6 and TNF?. Transcriptional profiling revealed that DUSP1 controls a significant fraction of LPS-induced genes, that includes IL-6 and IL-10 as well as the chemokines CCL3, CCL4 and CXCL2. In contrast, the expression of the important mediators of endotoxin lethality, IFN? and IL-12, was not significantly altered by the absence of DUSP1. These data together demonstrate a specific regulatory role of DUSP1 in controlling a subset of LPS-induced genes that determines the outcome of endotoxin shock. Keywords: in vivo analysis of splenic mRNA expression
2005-12-15 | GSE3565 | GEO
Project description:Methylation of Dual Specificity Phosphatase 4 Controls Cell Differentiation
| PRJNA729047 | ENA
Project description:The mitogen-activated protein kinase (MAPK) p38 pathway is reported to regulate macrophage responses to lipopolysaccharide (LPS) at least partly via the phosphorylation of the mRNA-destabilizing factor tristetraprolin (TTP). LPS-activated MAPK p38 phosphorylates and activates the downstream kinase MAPK-activated protein kinase 2 (MK2), which then phosphorylates serines 52 and 178 of TTP, resulting in loss of mRNA-destabilizing activity. As a consequence, mRNAs that contain binding sites for TTP are stabilized in a manner that is acutely sensitive to the activity of the MAPK p38 pathway. Dual specificity phosphatase 1 (DUSP1) dephosphorylates and inactivates MAPK p38. Dusp1-/- macrophages overexpress a number of pro-inflammatory mediators, but their genome-wide responses to LPS have not yet been described in detail. Dusp1-/- mice are exceptionally sensitive to a wide variety of inflammatory challenges, including experimental models of endotoxemia or sepsis. It has been suggested (but not yet proven) that DUSP1 controls the inflammatory response of macrophages in part via the regulation of MAPK p38 activity and TTP phosphorylation status. We generated a mouse knock-in strain, in which codons 52 and 178 of the endogenous Zfp36 gene (which encodes TTP) were mutated to alanine codons. The mutation gives rise to a constitutively active form of TTP, which cannot be inactivated via the p38 MAPK pathway. The Zfp36aa/aa strain was back-crossed against C57/BL6 for > 10 generations. We also generated a double-targeted strain in which the Zfp36 mutation was combined with disruption of the Dusp1 gene. This expression array describes LPS responses of primary mouse bone marrow-derived macrophages of four genotypes, and closely matched genetic background: wild type (Dusp1+/+ : Zfp36+/+); TTP mutant (Zfp36aa/aa); DUSP1 knock out (Dusp1-/-); and double targeted (Dusp1-/- : Zfp36aa/aa). The data provide a comprehensive picture of the impact of Dusp1 deletion or TTP mutation on the responses of primary macrophages to LPS. They also demonstrate that the excessive inflammatory responses of Dusp1-/- macrophages are largely a consequence of the phosphorylation and inactivation of TTP. Genome wide expression profiles of wild type, Dusp1-/-, Zfp36aa/aa and Dusp1-/-/Zfp36aa/aa M-CSF derived macrophages, stimulated with LPS for 1 or 4 hours
2015-05-15 | E-GEOD-68449 | biostudies-arrayexpress
Project description:A requirement for dual-specificity phosphatase 6 in zebrafish gametogenesis
| PRJNA399093 | ENA
Project description:By using high-density DNA microarrays, we analyzed the gene-expression profile of Hodgkin's lymphoma cell line L-428 after knock-down of DUSP5 (dual specificity phosphatase 5)
2014-07-01 | GSE52831 | GEO