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Expression data by BRD7552 treatment in PANC-1 cells

ABSTRACT: Three master regulatory transcription factors Pdx1, MafA and Ngn3 have the ability to transdifferentiate pancreatic acinar cells to insulin-producing beta cells in mice. BRD7552 was identified as a small-molecule inducer that can upregulate the expression of Pdx1 in PANC-1 cells by high-throughput qPCR screening. We used microarrays to illustrate the mechnism of BRD7552 for PDX1 and insulin induction. PANC-1 cells were treated with BRD7552 at 5uM, the mininal concentration for the maximal induction of Pdx1. The RNA was isloated at two time points 6-hour and 72-hour.

ORGANISM(S): Homo sapiens

SUBMITTER: Yuan Y

PROVIDER: S-ECPF-GEOD-44946 | biostudies-other | 2013 Dec

REPOSITORIES: biostudies-other

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Expression data by BRD7552 treatment in PANC-1 cells

Project description:Three master regulatory transcription factors Pdx1, MafA and Ngn3 have the ability to transdifferentiate pancreatic acinar cells to insulin-producing beta cells in mice. BRD7552 was identified as a small-molecule inducer that can upregulate the expression of Pdx1 in PANC-1 cells by high-throughput qPCR screening. We used microarrays to illustrate the mechnism of BRD7552 for PDX1 and insulin induction.

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Expression data from human pancreatic cells PANC-1 infected with oncolytic vaccinia virus GLV-1h153

Project description:Pancreatic cancer is a fatal disease associated with resistance to conventional therapies. GLV-1h153 is an oncolytic virus which has shown promise for the targeted treatment of cancer, and is engineered to carry the human sodium iodide symporter (hNIS) for the imaging of viral replication within tumors via enhanced uptake of several radionuclide probes. We used microarrays to determine changes in gene expression patterns over time associated with infection and susceptibility of pancreatic cancer cells to GLV-1h153. Understanding into the molecular mechanisms associated with PANC-1 sensitivity to GLV-1h153 may enable identification of cancers resistant to viral therapy, avoid undesirable side effects associated with the need for higher doses of viral treatment, and development of safer and more efficacious oncolytic virotherapies. PANC-1 cells were infected with GLV-1h153. Zero (T0), 6 (T6) and 24 (T24) hours after infection, 3 samples of each time point were harvested and gene expression patterns assessed using HG-U133A cDNA microarray chips as compared to uninfected control (T0).

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Expression analysis of RNAi mediated ALPPL2 knockdown in ALPPL2 expressing Panc-1 cells (Panc-1+ve)

Project description:Analysis of differentially expressing genes in whole genome wide analysis of ALPPL2 expressing Panc-1 cells (Panc-1+ve) via siRNA mediated knockdown of ALPPL2 Panc-1 +ve and Panc-1-ve cell lines were generated from Panc-1 cell line based upon its hetergenous binding to aptamer SQ2. Detailed procedure of generation of these cell lines are described in Pooja Dua, Hye Suk Kang, Seung-Mo Hong, Ming-Sound Tsao, Soyoun Kim, and Dong-ki Lee. 2012 Alkaline Phosphatase ALPPL2 is a novel pancreatic carcinoma-associated protein. Cancer Research A four chip study using total RNA recovered from Panc-1+ve cells transfected with siALPPL2-2, siALPPL2-3, siGFP control and Lipofectamine 2000 treatament . Each chip measures 45,033 genes with three 60 mer probe pairs per target.

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Expression data from TGF-beta treated Panc-1 pancreatic adenocarcinoma cell line

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Project description:The human metastasis-associated protein 1 (MTA1) is a constituent of the nucleosome-remodelling and -deacetylation complex. Its expression has been correlated with the invasion and metastasis of epithelial neoplasms. To address the functional consequences of MTA1 expression in pancreatic carcinoma cells, we have established PANC-1 pancreatic carcinoma cells that stably express MTA1 as an enhanced green fluorescent fusion protein (EGFP-MTA1). Here, we demonstrate that heterologous expression of EGFP-MTA1 markedly enhanced the cellular motility and the invasive penetration of epithelial barriers by the cells. Expression of EGFP-MTA1 had no effect on substrate-independent growth, but reduced substrate-dependent cell proliferation. In addition, the organisation of the cytokeratin filament system and the localisation of the actin cytoskeleton-associated protein IQGAP1 were distinctly altered in EGFP-MTA1-expressing cells. These results indicate that enhanced expression of MTA1 promotes the acquisition of an invasive, metastatic phenotype, and thus enhances the malignancy of pancreatic adenocarcinoma cells by modulation of the cytoskeleton.

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MicroRNAs Targeting Caspase-3 and -7 in PANC-1 Cells.

Project description:MicroRNAs (miRNAs), a critical part of the RNA silencing machinery, are known to play important regulatory roles in cancer. However, the consequence of miRNA deregulation in cancer is unknown for many miRNAs. Here, we define that miRNAs, miR-17-5p, miR-132-3p/-212-3p, and miR-337-3p are significantly up-regulated in the pancreatic ductal adenocarcinomas (PDAC) compared to the normal and benign tissues. Furthermore, by using PANC-1 cells, we demonstrate that overexpressed miR-337-3p and miR-17-5p/miR-132-3p/-212-3p can regulate executioner caspases-3 and -7, respectively. In addition, over-expression of miRNAs, especially miR-337-3p, attenuates tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) cytotoxicity in PANC-1 cells. Our findings unveil an important biological function for miRNAs up-regulated in PDAC in coordinately regulating caspases, potentially contributing to the malignant progression of PDAC.

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