Project description:Barrett's esophagus transcriptome was analysed and compared with Barrett's esophagus primary cell culture and esophageal adenocarcinoma. Keywords: SAGE analysis to compare tissues Barrett's esophagus biopsy was taken from 1 male metaplastic Barrett's esophagus patient. Barrett's esophagus primary cell culture was cultures from a biopsy taken from a Barrett's esophagus patient and cultured for about 4 to 5 weeks. Esophageal adenocarcinoma was taken from a patient known to have cancer and previously Barrett's esophagus
Project description:SAGE performed on biopsies of Barrett's esophagus, squamous esophagus and gastric cardia taken from a metaplastic Barrett's esophagus patient. Keywords: SAGE
Project description:SAGE performed on biopsies of Barrett's esophagus, squamous esophagus and gastric cardia taken from a metaplastic Barrett's esophagus patient. Keywords: SAGE comparative analysis of gene expression profiles of Barrett's esophagus, normal squamous esophagus and gastric cardia tissue
Project description:Barrett's esophagus is a metaplastic condition of the distal esophagus, characterized by the replacement of normal squamous epithelium by columnar epithelium. Patients with BE have an increased risk of developing esophageal adenocarcinoma. MicroRNAs have been implicated to be disease and tissue specific, however limited data of microRNA expression in the esophagus is available. Therefore we evaluated microRNA expression profiles of esophageal adenocarcinoma and compared these with Barrett's esophagus and normal squamous esophagus.
Project description:Barrett's esophagus transcriptome was analysed and compared with Barrett's esophagus primary cell culture and esophageal adenocarcinoma. Keywords: SAGE analysis to compare tissues
Project description:samples contain normal, Barrett and duodenum and adenocarcinoma BACKGROUND & AIMS: Barrett's esophagus is a precursor of esophageal adenocarcinoma. DNA microarrays that enable a genome-wide assessment of gene expression enhance the identification of specific genes as well as gene expression patterns that are expressed by Barrett's esophagus and adenocarcinoma compared with normal tissues. Barrett's esophagus length has also been identified as a risk factor for progression to adenocarcinoma, but whether there are intrinsic biological differences between short-segment and long-segment Barrett's esophagus can be explored with microarrays. METHODS: Gene expression profiles for endoscopically obtained biopsy specimens of Barrett's esophagus or esophageal adenocarcinoma and associated normal esophagus and duodenum were identified for 17 patients using DNA microarrays. Unsupervised and supervised approaches for data analysis defined similarities and differences between the tissues as well as correlations with clinical phenotypes. RESULTS: Each tissue displays a unique expression profile that distinguishes it from others. Barrett's esophagus and esophageal adenocarcinoma express a unique set of stromal genes that is distinct from normal tissues but similar to other cancers. Adenocarcinoma also showed lower and higher expression for many genes compared with Barrett's esophagus. No difference in gene expression was found between short-segment and long-segment Barrett's esophagus. CONCLUSIONS: The genome-wide assessment provided by current DNA microarrays reveals many candidate genes and patterns not previously identified. Stromal gene expression in Barrett's esophagus and adenocarcinoma is similar, indicating that these changes precede malignant transformation. A disease state experiment design type is where the state of some disease such as infection, pathology, syndrome, etc is studied. Keywords: disease_state_design
Project description:Sensitive and noninvasive biomarkers are essential for screening and treating hepatocellular carcinoma (HCC). We explored whether salivary lncRNAs and miRNAs could be robust biomarkers for HCC. Using Agilent microarray, lncRNAs and miRNAs were profiled from liver tissue with HCC and normal liver.
Project description:SAGE libraries made of squamous esophagus tissue, primary cell culture or esophageal squamous cell carcinoma Keywords: SAGE analysis of different tissues squamous esophagus biopsy was taken from 1 male metaplastic Barrett's esophagus patient. primary cell culture was from 1 male Barrett's esophagus patient. Esophageal squamous cell carcinoma was from a patient known to have ESCC
Project description:To test the hypothesis that there are specific miRNA/UCR expression signature which characterizes Barrett's esophagus development and progression, we performed miRNA/UCR microarray analysis comparing normal esophageal squamous epithelium with all the phenotypic lesions seen in the Barrett's carcinogenic process