Expression data comparing the effect of IKK2 KO on a KRAS mouse model
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE30049 | GEO | 2011/12/15
SECONDARY ACCESSION(S): PRJNA144073
REPOSITORIES: GEO
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2012-01-24 | GSE27478 | GEO
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Project description:Constitutive Kras and NF-kB activation is identified as signature alterations in human pancreatic ductal adenocarcinoma (PDAC). Here, we report that pancreas-targeted IKK2/beta inactivation inhibited NF-kB activation and completely suppressed PDAC development. Our findings demonstrated that NF-kB is required for development of pancreatic ductal adenocarcinoma that was initiated by Kras activation.
2012-01-24 | GSE33322 | GEO
Project description:Inflammation is a major factor in heart disease. IκB kinase (IKK) and its downstream target NF-κB are regulators of inflammation and are activated in cardiac disorders, but their precise contributions and targets are unclear. We analyzed IKK/NF-κB function in the heart by a gain-of-function approach, generating an inducible transgenic mouse model with cardiomyocyte-specific expression of constitutively active IKK2 (IKK2-CA). In adult animals, IKK2 activation led to inflammatory dilated cardiomyopathy and heart failure. Transgenic hearts showed infiltration with CD11b+ cells, fibrosis, fetal reprogramming, and atrophy of myocytes with strong constitutively active IKK2 expression. To gain insight into proximal events after activation of IKK2/NF-κB, we isolated cardiomyocytes and activated the transgene in vitro, thus avoiding interference of other cell types. Gene expression analysis revealed up-regulation of transcripts of chemotactic cytokines, adhesion molecules, and a striking number of IFN-regulated genes in cardiomyocytes expressing IKK2-CA. In addition, apoptotic and anti-apoptotic genes were up-regulated.
2015-10-19 | E-MTAB-3975 | biostudies-arrayexpress
Project description:Constitutive Kras and NF-kB activation is identified as signature alterations in human pancreatic ductal adenocarcinoma (PDAC). Here, we report that pancreas-targeted IKK2/beta inactivation inhibited NF-kB activation and completely suppressed PDAC development. Our findings demonstrated that NF-kB is required for development of pancreatic ductal adenocarcinoma that was initiated by Kras activation. Pancreatic tissue from 4 groups of mice were used in this project: (1) the pancreas normal appearance of Pdx1-cre;KrasLSL-G12D;IKK2/beta mice, (2) the normal pancreas of Pdx1-cre;KrasLSL-G12D mice, (3) the pancreatic lesion of pancreatic intraepithelial neoplasia (PanIN) of Pdx1-cre;KrasLSL-G12D mice, and (4) the pancreatic lesion of PDAC of Pdx1-cre;KrasLSL-G12D mice. Each group included three mice. RNA samples from mouse pancreas were hybridized on GeneChip Mouse Gene 1.0 ST arrays (Affymetrix). Group (1) and group (2) were compared, and group (2), group (3) and group (4) were compared.
2012-01-24 | E-GEOD-33322 | biostudies-arrayexpress
Project description:Experimental nephrotoxic serum nephritis (NTN) is a model for T-cell mediated human rapid progressive glomerulonephritis. T-cell receptor (TCR) stimulation leads to intracellular signaling events ultimately causing activation of transcription factors, such as NF-κB. Using CD4creIKK2fl/fl (CD4xIKK2Δ) and CD4creNEMOfl/fl (CD4xNEMOΔ) and CD4cre mice our results demonstrated that NTN was not attenuated in CD4xIKK2Δ, CD4xNEMOΔ when compared with CD4cre mice as showing no significant kidney functional difference with respect to BUN and proteinuria data as well as histological damage. Although the percentage of CD4+ T cells infiltrating kidneys was not significantly changed between the examined groups on day 10, further analysis showed significantly reduced Tregs and significant increase in Th1 and Th17 cells in CD4xIKK2Δ and CD4xNEMOΔ mice. The expression of renal cytokines and chemokines, IL-1β, CCL2 and CCL20, was significantly changed in CD4xIKK2Δ and CD4xNEMOΔ mice when compared with nephritic CD4cre animals. The microarray data confirmed the increased expression of Th17 related cytokines in splenetic CD4+ T cells. More importantly, our array data also demonstrated the interrupted canonical pathway in nephritic CD4xNEMOΔ mice, which highlighted the possible different downstream pathway when IKK2 or NEMO is specifically deleted in lymphocytes. By combining microarray gene expression and bioinformatics analyses our data have identified genes involved in T cell proliferation and differentiation that were differentially expressed between IKK2 and NEMO deficient CD4+ T cells. We propose that better understanding the role of IKK2 and NEMO in T cell regulation will help to recognize the role of IKK2 and NEMO kinase inhibitors in the clinical application in patients with glomerulonephritis.
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