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MicroRNA signatures in chemotherapy resistant esophageal cancer cell lines

World Journal of Gastroenterology 2014年第40期20卷 14904-14912页

作者： Richard Hummel Corina Sie David I Watson Tingting Wang alfiya ansar Michael Z Michael Mark Van der Hoek Joerg Haier Damian J Hussey Department of Surgery Flinders University Bedford Park South Australia 5042 Australia Department of General and Visceral Surgery University of Muenster 48149 Muenster Germany Department of Gastroenterology and Hepatology Flinders University 5042 Bedford Park South Australia Australia Adelaide Microarray Centre SA Pathology 5000 Adelaide South Australia Australia Comprehensive Cancer Centre University of Muenster 48149 Muenster Germany

AIM: To investigate expression of microRNA (miRNA) and potential targets in chemotherapy resistant esophageal cancer cell lines.

关键词： Esophageal cancer MicroRNA Chemotherapy Resistance Target

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MicroRNA profile in neosquamous esophageal mucosa following ablation of Barrett's esophagus

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World Journal of Gastroenterology 2017年第30期23卷 5508-5518页

作者： Loveena Sreedharan George C Mayne David I Watson Timothy Bright Reginald V Lord alfiya ansar Tingting Wang Jakob Kist David StJ Astill Damian J Hussey Department of Surgery Flinders Medical Centre Flinders University St Vincent’s Centre for Applied Medical Research Department of Anatomical Pathology Flinders Medical Centre

To investigate the microRNA expression profile in esophageal neosquamous epithelium from patients who had undergone ablation of Barrett’s esophagus. METHODSHigh throughput screening using TaqMan® Array Human MicroRNA quantitative PCR was used to determine expression levels of 754 microRNAs in distal esophageal mucosa (1 cm above the gastro-esophageal junction) from 16 patients who had undergone ablation of non-dysplastic Barrett’s esophagus using argon plasma coagulation vs pretreatment mucosa, post-treatment proximal normal non-treated esophageal mucosa, and esophageal mucosal biopsies from 10 controls without Barrett’s esophagus. Biopsies of squamous mucosa were also taken from 5 cm above the pre-ablation squamo-columnar junction. Predicted mRNA target pathway analysis was used to investigate the functional involvement of differentially expressed microRNAs. RESULTSForty-four microRNAs were differentially expressed between control squamous mucosa vs post-ablation neosquamous mucosa. Nineteen microRNAs were differentially expressed between post-ablation neosquamous and post-ablation squamous mucosa obtained from the more proximal non-treated esophageal segment. Twelve microRNAs were differentially expressed in both neosquamous vs matched proximal squamous mucosa and neosquamous vs squamous mucosa from healthy patients. Nine microRNAs (miR-424-5p, miR-127-3p, miR-98-5p, miR-187-3p, miR-495-3p, miR-34c-5p, miR-223-5p, miR-539-5p, miR-376a-3p, miR-409-3p) were expressed at higher levels in post-ablation neosquamous mucosa than in matched proximal squamous and healthy squamous mucosa. These microRNAs were also more highly expressed in Barrett’s esophagus mucosa than matched proximal squamous and squamous mucosa from controls. Target prediction and pathway analysis suggests that these microRNAs may be involved in the regulation of cell survival signalling pathways. Three microRNAs (miR-187-3p, miR-135b-5p and miR-31-5p) were expressed at higher levels in post-

关键词： Neosquamous Barrett’s esophagus Ablation

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