Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA232596 | ENA |
REPOSITORIES: ENA
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Project description:We have carried out transcriptional profile analysis in WT MICE and bitransgenic Pdx1-cre/Kras*A MICE baring Pancreatic Ductal Adenocarcinoma Mouse models faithfully simulating human cancer are valuable for genetic identification of potential drug-targets but, among them, the most advantageous for practical use in subsequent preclinical testing of candidate therapeutic regimes are those exhibiting rapid tumor development. Considering that a KRAS mutation (predominantly in codon 12, such as KRASG12D; KRAS*) occurs with high frequency (~90%) in cases of human pancreatic ductal adenocarcinoma (PDA)1, we sought to develop a mouse PDA model that would exhibit high tumor incidence and short latency by ectopic overexpression of Kras*. Five WT mice and 6 bitransgenic Pdx1-cre/Kras*A MICE baring Pancreatic Ductal Adenocarcinoma were used to identify key genes in the formation of panceatic malignacies
2014-09-01 | E-GEOD-53659 | 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:We have carried out transcriptional profile analysis in WT MICE and bitransgenic Pdx1-cre/Kras*A MICE baring Pancreatic Ductal Adenocarcinoma Mouse models faithfully simulating human cancer are valuable for genetic identification of potential drug-targets but, among them, the most advantageous for practical use in subsequent preclinical testing of candidate therapeutic regimes are those exhibiting rapid tumor development. Considering that a KRAS mutation (predominantly in codon 12, such as KRASG12D; KRAS*) occurs with high frequency (~90%) in cases of human pancreatic ductal adenocarcinoma (PDA)1, we sought to develop a mouse PDA model that would exhibit high tumor incidence and short latency by ectopic overexpression of Kras*.
2014-09-01 | GSE53659 | GEO
Project description:Pancreatic ductal adenocarcinoma (PDAC) causes involuntary wasting of adipose and muscle tissue, also known as cachexia. Cachexia is a major cause of cancer-related deaths, particularly among patients with PDAC. Here we profiled gene expression in adipose tissue and skeletal muscle in normal/sham control mice and in mice bearing orthotopic PDAC tumors. PDAC tumors were initiated by intra-pancreatic injection of a cell line derived from the KPC (Kras-G12D;Trp-R172H;Pdx1::Cre) genetically engineered mouse model of pancreatic cancer, or by injection of the same cell line deleted for the IL6 gene using CRISPR/Cas9. KPC-IL6 knockout (ko) cells caused less adipose wasting and no muscle loss compared with KPC-wildtype (wt) cells.
2021-04-07 | GSE123310 | GEO
Project description:The goal of this study is to investigate the molecular mechanisms of LIFR signaling in pancreatic cancer cells isolated from the classical pancreatic ductal adenocarcinoma mouse model KrasLSL-G12D;Tp53f/f;Rosa26LSL-Luc;Pdx1-Cre mice EpCAM+ pancreatic cancer cells were isolated by FACS from pancreatic tumors developed in Lifrf/f;KrasLSL-G12D/+;Trp53f/f;Rosa26LSL-Luc;Pdx1-Cre or LifrWT;KrasLSL-G12D/+;Trp53f/f;Rosa26LSL-Luc;Pdx1-Cre mice respectively and directly lysed for RNA extraction
2018-12-21 | GSE119694 | GEO
Project description:The goal of this study is to investigate the molecular mechanisms of LIF action on pancreatic cancer cells in the classical pancreatic ductal adenocarcinoma mouse model KrasLSL-G12D;Tp53f/f;Rosa26LSL-Luc;Pdx1-Cre mice EpCAM+ pancreatic cancer cells were isolated from pancreatic tumors developped in KrasLSL-G12D;Tp53f/f;Rosa26LSL-Luc;Pdx1-Cre mice treated with either gemcitabine plus control IgG or gemcitabine plus anti-LIF antibody by FACS
2018-12-21 | GSE99187 | GEO
Project description:To determine the molecular basis of gene regulation in pancreatic ductal epithelial cells, we developed methods for the isolation of this cell population during mouse development and normal adult homeostasis, as well as in conditions with ductal features (acinar-to-ductal metaplasia (ADM), pancreatic intraepithelial neoplasia (PanIN) and pancreatic ductal adenocarcinoma (PDAC)). Our technique utilizes the specificity of Dolichos biflorus Agglutinin (DBA) lectin marking the entire normal ductal tree, including terminal intercalated ducts (putative sites of stem or progenitor cells) and ductal structures in ADM and PanIN. We used ferromagnetic-labeled DBA lectin to isolate ductal structures. Ductal cells were isolated under the following conditions: (1) Embryonic Development in wild type mice: E14.5, E15.5, E16.5, and postnatal day 1 (P1); (2) Injury and regeneration (pancreatitis) 0, 1, 3, 5 days following cerulein-induced acute pancreatitis. Cerulein is a cholecystokinin analog which produces a self-limited pancreatitis with injury and subsequent regeneration and repair, completed five days after insult; and (3) Pdx1-Cre;LSL-KrasG12D/+ mice aged 10 and 20 weeks that harbor PanIN lesions and a subset develop PDAC. Ductal/PanIN cells were isolated from these mice and appropriate control mice (Pdx1-Cre;Kras+/+).
2015-09-30 | GSE40895 | GEO
Project description:Constitutive Kras and NF-kappaB activation is identified as signature alterations in human pancreatic ductal adenocarcinoma (PDAC). However, the mechanisms of constitutive NF-kappaB activation in KrasG12D-induced PDAC are not yet understood. Here, we report that pancreas-targeted IKK2/beta inactivation inhibited NF-kappaB activation and completely suppressed PDAC development in KrasG12D and KrasG12D;Ink4a/Arf mutant mice, demonstrating a genetic link between IKK2/beta and KrasG12D in PDAC inception. Our findings reveal that KrasG12D-activated AP-1 induces IL-1alpha, which in turn activates NF-kappaB and its target genes IL-1alpha and p62, to initiate IL-1alpha/p62 feedforward loops for inducing and sustaining NF-kappaB activity. Furthermore, IL-1alpha overexpression correlates with Kras mutation, constitutive NF-kappaB activity, and poor survival in PDAC patients. Therefore, our findings establish a pathway linking duel feedforward loops of IL-1alpha/p62 through which IKK2/beta/NF-kappaB is activated by KrasG12D. To study Kras-induced inflammatory responses and to identify differentially expressed genes between the pancreatic tissues of Pdx1-Cre;KrasLSL-G12D and Pdx1-Cre;KrasLSL-G12D;IKK2/betaF/F mice, cDNA microarray analysis was performed.
2012-01-24 | E-GEOD-27478 | biostudies-arrayexpress
Project description:To examine effects of environmental risk factors on pancreatic cancer development, we fed control Pdx1-Cre (WT) and Pdx1-Cre; Kras-flox (Kras) mice with a Western alcohol diet containing high-cholesterol and high-saturated fat diet and 3.5% alcohol for 5 months. To enhance alcohol-induced pancreatic injury, we added a low dose of lipopolysaccharide (LPS, 1 μg/ml) to the diet. Mice were also given 7 hourly injections of cerulein (50 μg/kg) 4 times from the 1st to 4th month. To mimic tobacco smoking, we injected tobacco-derived carcinogen 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK, 100 mg/kg) 4 times from the 1st to 4th month. Pancreas tissues were collected from Pdx1-Cre (n=3, normal) and Pdx1-Cre; Kras-flox (n=6, all) mice. Kras-flox (Kras) mice were also fed a regular chow (n=3, control) or 3.5% alcohol diet (N=3, alcohol) for 5 months. RNA-seq analysis revealed induction of cancer-associated genes by these risk factors in the pancreatic cancer tissues.
2020-10-22 | GSE139357 | GEO
Project description:This SuperSeries is composed of the following subset Series: GSE27478: Gene expression differences between the pancreatic tissues of Pdx1-Cre;KrasLSL-G12D and Pdx1-Cre;KrasLSL-G12D;IKK2/betaF/F mice GSE33322: Gene expression analysis between the pancreatic tissues of Pdx1-cre;Kras LSL-G12D and Pdx-cre;KrasLSL-G12D;IKK2/beta F/F mice Refer to individual Series
2012-01-24 | E-GEOD-33323 | biostudies-arrayexpress