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Mutational signatures define immune and Wnt-associated subtypes of ampullary carcinoma [RNA]

ABSTRACT: Expression profiling by high throughput sequencing in order to analyze the differential profile of RNAs expression from patients with Ampullary carcinoma (AMPAC)

ORGANISM(S): Homo sapiens

PROVIDER: GSE159097 | GEO | 2025/03/25

REPOSITORIES: GEO

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Mutational signatures define immune and Wnt-associated subtypes of ampullary carcinoma [WES]

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Mutational signatures define immune and Wnt-associated subtypes of ampullary carcinoma [methylation]

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Mutational signatures define immune and Wnt-associated subtypes of ampullary carcinoma

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Mutational signatures define immune and Wnt-associated subtypes of ampullary carcinoma

Project description:This SuperSeries is composed of the SubSeries listed below.

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Mutational signatures define immune and Wnt-associated subtypes of ampullary carcinoma [methylation]

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Mutational signatures define immune and Wnt-associated subtypes of ampullary carcinoma [RNA]

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Gene expression profiling of ampullary carcinomas classifies ampullary carcinomas into biliary-like and intestinal-like subtypes that are prognostic of outcome

Project description:Adenocarcinomas of the ampulla of Vater are classified as biliary cancers, though the exact epithelium of origin for these cancers is not known. We sought to molecularly classify ampullary adenocarcinomas in comparison to known adenocarcinomas of the pancreas, extrahepatic bile duct, and duodenum by gene expression analysis. We analyzed 32 fresh-frozen resected, untreated periampullary adenocarcinomas (8 pancreatic, 2 extrahepatic biliary, 8 duodenal, and 14 ampullary) using the Affymetrix U133 Plus 2.0 genome array.

2013-01-01 | E-GEOD-39409 | biostudies-arrayexpress

Gene expression profiling of ampullary carcinomas classifies ampullary carcinomas into biliary-like and intestinal-like subtypes that are prognostic of outcome

2013-01-01 | GSE39409 | GEO

Characterization of various cell lines from different ampullary cancer subtypes and cancer associated fibroblast-mediated responses

Project description:Introduction: Ampullary cancer is a relatively rare entity and usually treated by pancreatoduodenectomy followed by adjuvant therapy. The intestinal subtype is associated with markedly improved prognosis after resection. Only few cell lines are available for in vitro studies of ampullary cancer and they have not been collectively characterized. Methods: We characterized available ampullary cancer cell lines by subtype maker expression, epithelial-mesenchymal transition (EMT) features, growth and invasion, drug sensitivity and response to cancer-associated fibroblast conditioned medium (CAF-CM). Results: On the basis of EMT features, subtype marker expression, growth, invasion and drug sensitivity three types of cell lines could be distinguished: mesenchymal-like, pancreatobiliary-like and intestinal-like. In response to CAF-CM, enhanced growth, EMT induction as well as suppression of intestinal differentiation markers were observed, but in a heterogenous pattern. Also proteomic analysis of the CAF response distinguished intestinal-like from other cell lines. Discussion: Most of the available AMPAC cell lines seem to reflect a poorly differentiated pancreatobiliary or mesenchymal-like phenotype, consistent with their origin. We suggest that the best cell line model for intestinal-like AMPAC is the SNU869 cell line, while others seem to reflect aggressive AMPAC subtypes.

2016-03-14 | PXD002657 | Pride

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