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:Microarray was used to identify differential gene expression pattern in Barrett's esophagus (BE), compared to the normal adjacent epithelia gastric cardia (GC) and normal squamous esophagus (NE)
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:Barrett’s esophagus confers significant risk of esophageal adenocarcinoma. We have established the cloning of patient-matched stem cells of Barrett’s, gastric, and esophageal epithelium. Barrett's esophagus stem cells (BE), gastric cardia stem cells (GC) and normal esophagus stem cells (Eso) from 12 patients were cloned (For BE: 12 patients, GC: 12 patients and Eso: 2 patients). Keratin 5 positive and Keratin 7 positive cells were cloned from human fetal esophageal epithelium. Using air liquid interface culture system, stem cells were induced to differentiate into mature epithelial structures.
Project description:Barrett’s esophagus confers significant risk of esophageal adenocarcinoma. We have established the cloning system of patient-matched stem cells of Barrett’s esophagus and gastric cardia. Barrett's esophagus (BE) stem cells and gastric cardia (GC) stem cells from 12 patients were cloned. To analyze copy number variation in BE and GC stem cells, we have performed SNP array. It has shown that deletions such as p16 and FHIT in BE stem cells are significantly detected, while amplifications in BE stem cells are not. Also, we found some of BE stem cells did not share these deletions, suggesting emerging of BE does not require specific CNV.
Project description:Barrett’s esophagus confers significant risk of esophageal adenocarcinoma. We have established the cloning system of patient-matched stem cells of Barrett’s esophagus and gastric cardia. Barrett's esophagus (BE) stem cells and gastric cardia (GC) stem cells from 12 patients were cloned. To analyze copy number variation in BE and GC stem cells, we have performed SNP array. It has shown that deletions such as p16 and FHIT in BE stem cells are significantly detected, while amplifications in BE stem cells are not. Also, we found some of BE stem cells did not share these deletions, suggesting emerging of BE does not require specific CNV.
Project description:Barrettâs esophagus confers significant risk of esophageal adenocarcinoma. We have established the cloning system of patient-matched stem cells of Barrettâs esophagus and gastric cardia. Barrett's esophagus (BE) stem cells and gastric cardia (GC) stem cells from 12 patients were cloned. To analyze copy number variation in BE and GC stem cells, we have performed SNP array. It has shown that deletions such as p16 and FHIT in BE stem cells are significantly detected, while amplifications in BE stem cells are not. Also, we found some of BE stem cells did not share these deletions, suggesting emerging of BE does not require specific CNV. SNP array based copy number variation study was performed for BE and GC stem cells from human endoscopic biopsy (12 patients) to assess genomic stability at chromosomal level.
Project description:Barrett's esophagus is a common type of metaplasia and a precursor of esophageal adenocarcinoma. However, the cell states and lineage connections underlying the origin, maintenance, and progression of Barrett’s esophagus have not been resolved in humans. Here, we performed single-cell lineage tracing and transcriptional profiling of patient cells isolated from metaplastic and healthy tissue. Our analysis unexpectedly revealed that the squamous esophagus and gastric cardia contained cells belonging to common lineages that also included transitional basal progenitor cells; both esophageal and gastric tissues were also related to Barrett's esophagus. Barrett’s esophagus biopsies consisted of multiple clones, with lineages that contained all progenitor and differentiated cell types. In contrast, precancerous dysplastic lesions were initiated by the expansion of a single molecularly aberrant Barrett’s esophagus clone. Together, these findings provide a comprehensive view of the cell dynamics of Barrett's esophagus, linking cell states along the disease trajectory, from its origin to cancer.
Project description:Barrett's esophagus is a common type of metaplasia and a precursor of esophageal adenocarcinoma. However, the cell states and lineage connections underlying the origin, maintenance, and progression of Barrett’s esophagus have not been resolved in humans. Here, we performed single-cell lineage tracing and transcriptional profiling of patient cells isolated from metaplastic and healthy tissue. Our analysis unexpectedly revealed that the squamous esophagus and gastric cardia contained cells belonging to common lineages that also included transitional basal progenitor cells; both esophageal and gastric tissues were also related to Barrett's esophagus. Barrett’s esophagus biopsies consisted of multiple clones, with lineages that contained all progenitor and differentiated cell types. In contrast, precancerous dysplastic lesions were initiated by the expansion of a single molecularly aberrant Barrett’s esophagus clone. Together, these findings provide a comprehensive view of the cell dynamics of Barrett's esophagus, linking cell states along the disease trajectory, from its origin to cancer.
