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Single-cell RNA-sequencing of murine pancreatic tumors derived from the orthotopic transplantation of Smad4 wild-type (WT) or Smad4 knockout (KO) pancreatic ductal adenocarcinoma (PDAC) KvPC organoids in nu/nu mice

ABSTRACT: We investigated the effect of SMAD4 loss in KvPC PDAC tumors

ORGANISM(S): Mus musculus

PROVIDER: GSE262878 | GEO | 2024/12/24

REPOSITORIES: GEO

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Single-cell RNA-sequencing of murine pancreatic tumors derived from the orthotopic transplantation of Smad4 wild-type (WT) or Smad4 knockout (KO) pancreatic ductal adenocarcinoma (PDAC) KPC organoids in nu/nu mice.

Project description:We investigated the effect of SMAD4 loss in KPC PDAC tumors

2024-12-24 | GSE262879 | GEO

Project description:Single-cell RNA-sequencing of murine pancreatic tumors derived from the orthotopic transplantation of Smad4 wild-type (WT) or Smad4 knockout (KO) pancreatic ductal adenocarcinoma (PDAC) KvPC organoids in nu/nu mice

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Genome-wide DNA methylation patterns in pancreatic ductal adenocarcinoma (PDAC)

Project description:Determine methylation pattern in PDAC a genome-wide analysis was performed in a cohort of 167 PDAC and 29 adjacent pancreatic tissues samples using the Infinium 450k methylation arrays (Illumina). 167 pancreatic tumors (PDAC) x 29 adjacent -non tumor samples.

2014-07-08 | E-GEOD-49149 | biostudies-arrayexpress

Gene expression analyses of SMAD4 knockdown in pancreatic cell line

Project description:The transforming growth factor ? (TGF-?) signaling protein SMAD4 is lost in 60% of PDAC, and this has been associated with poorer prognosis. We expressed SMAD4 in human PDAC cell lines BxPC3, by selection of stable clones containing an inducible SMAD4 Tet-ON construct. After 24h of SMAD4 expression, TGF-? signaling-dependent G1-arrest was observed in BxPC3 cells with an increase in the G1-phase fraction from 48.9% to 71.5%. Microarray analysis of gene expression at 8h, 24h, and 48h after SMAD4 expression characterized the regulatory impact of SMAD4 expression in a SMAD4-null PDAC cell line and identified novel targets of TGF-? signaling. We used BxPC3 cells infected by pINDCUER-SMAD4-Puro virus. After 24h, 1µg/ml doxycycline was added to experimental wells. We profiled the gene expression after 8hr, 24hr and 48hr treatment with doxycycline as well as control at 8hr.

2015-08-20 | E-GEOD-70940 | biostudies-arrayexpress

Human Pancreatic Ductal Adenocarcinoma (PDAC), LC-MS/MS

Project description:The aim of the study was to characterize a common molecular mechanism for paclitaxel resistance in Patu-T and Suit-2.028 PDAC cell lines. Despite the ATP-binding cassette (ABC) trasnsporters were already shown to be involved in various chemo-resistant forms of cancers but not in PDAC, the most likely impact of ABCB1 overexpression in PDAC cell models was taken into account in this dataset.

2024-01-26 | PXD040930 | Pride

RNA-sea of Smad4 wild-type or Smad4 knockout KvPC PDAC organoids from monocultures or co-cultures with pancreatic stellate cells and RNA-seq of flow-sorted PSCs from the same co-cultures.

Project description:RNA-sequencing of flow-sorted Smad4 wild-type (WT) or Smad4 knockout (KO) KvPC (i.e. KRASG12V; p53 mutant) pancreatic ductal adenocarcinoma (PDAC) organoids from monocultures or co-cultures with pancreatic stellate cells (PSCs) and RNA-sequencing of flow-sorted PSCs from the same co-cultures. We investigated changes in transcriptome in Smad4 KO KvPC PDAC organoids compared to Smad4 WT KvPC PDAC organoids in monoculture or in co-culture with PSCs. We also investigated the changes in transcriptome in PSCs co-cultured with Smad4 WT or Smad4 KO KvPC PDAC organoids.

2024-12-02 | GSE263081 | GEO

RNA-sea of Smad4 wild-type or Smad4 knockout KPC PDAC organoids from monocultures or co-cultures with pancreatic stellate cells and RNA-seq of flow-sorted PSCs from the same co-cultures.

Project description:RNA-sequencing of flow-sorted Smad4 wild-type (WT) or Smad4 knockout (KO) KPC (i.e. KRASG12D; p53 mutant) pancreatic ductal adenocarcinoma (PDAC) organoids from monocultures or co-cultures with pancreatic stellate cells (PSCs) and RNA-sequencing of flow-sorted PSCs from the same co-cultures. We investigated changes in transcriptome in Smad4 KO KPC PDAC organoids compared to Smad4 WT KPC PDAC organoids in monoculture or in co-culture with PSCs. We also investigated the changes in transcriptome in PSCs co-cultured with Smad4 WT or Smad4 KO KPC PDAC organoids.

2024-12-02 | GSE263080 | GEO

Expression data from peripheral blood in pancreatic ductal adenocarcinoma (PDAC) patients

Project description:The presence of some malignancies, such as cancer, impacts on peripheral blood mononuclear cells (PBMCs) gene expression profiling, suggesting the potential suitability of these genes as diagnostic and prognostic markers. The objective of this study was to identify new markers in peripheral blood that differentiate between PDAC patients and healthy controls as a means of facilitating early detection of the disease. 18 patients with unresectable PDAC were recruited. The diagnosis of PDAC was based on a positive biopsy of the pancreatic mass during the surgery. 18 gender, age, and habits matched healthy controls were also included. Whole genome cDNA microarray hybridization of PBMC samples was performed to identify potential PDAC markers.

2013-08-12 | E-GEOD-49641 | biostudies-arrayexpress

Array CGH analysis for 29 pancreatic ductal adenocarcinoma (PDAC) samples

Project description:Background/Aims: Microarray-based comparative genomic hybridisation (CGH) has allowed high-resolution analysis of DNA copy number alterations across the entire cancer genome. Recent advances in bioinformatics tools enable us to perform a robust and highly sensitive analysis of array CGH data and facilitate the discovery of novel cancer-related genes. Methods: We analysed a total of 29 pancreatic ductal adenocarcinoma (PDAC) samples (six cell lines and 23 microdissected tissue specimens) using 1 Mb-spaced CGH arrays. The transcript levels of all genes within the identified regions of genetic alterations were then screened using our Pancreatic Expression Database. Results: In addition to 238 high-level amplifications and 35 homozygous deletions, we identified 315 minimal common regions of “non-random” genetic alterations (115 gains and 200 losses) which were consistently observed across our tumour samples. The small size of these aberrations (median size of 880 kb) contributed to the reduced number of candidate genes included (on average 12 Ensembl-annotated genes). The database has further specified the genes whose expression levels are consistent with their copy number status. Such genes were UQCRB, SQLE, DDEF1, SLA, ERICH1 and DLC1, indicating that these may be potential target candidates within regions of aberrations. Conclusion: This study has revealed multiple novel regions that may indicate the locations of oncogenes or tumour suppressor genes in PDAC. Using the database, we provide a list of novel target genes whose altered DNA copy numbers could lead to significant changes in transcript levels in PDAC. (Harada et al. Pancreatology) Keywords: pancreatic ductal adenocarcinima, tissue microdissection, array CGH, genetic alterations A panel of 23 microdissected PDAC tissues and 6 PDAC-derived cell lines were analysed using Sanger's CGH arrays with 1 Mb resolution. Clinical info of the samples used is provided as a supplementary file.

2008-12-16 | E-GEOD-9672 | biostudies-arrayexpress

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