ArticleEsophagus : official journal of the Japan Esophageal Society2021
Molecular biomarker identification for esophageal adenocarcinoma using endoscopic brushing and magnified endoscopy.
Article in Esophagus : official journal of the Japan Esophageal Society, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 2 citations in OpenAlex.
- Esophageal squamous cell carcinoma: Integrated bioinformatics analysis for differential gene expression with identification of hub genes and lncRNA.Biochemistry and biophysics reports · 2022Article
- PDZK1 induces resistance to apoptosis in esophageal adenocarcinoma cells.Esophagus : official journal of the Japan Esophageal Society · 2021Article
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20 authors at 4 institutions in 2 countries.
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Abstract
backgroundBarrett's esophagus (BE) is a predisposing factor for esophageal adenocarcinoma (EAC); however, the precise mechanism underlying this association remains unclear. The identification of biomarkers that are associated with an increased risk of BE progression to EAC would facilitate diagnosis and early treatment. Toward this goal, we aimed to identify biomarkers associated with BE and EAC in patients.
methodsIn conjunction with high-resolution magnified endoscopy with narrow-band imaging (ME-NBI), we obtained brushing samples from the long-segment BE (LSBE) or short-segment BE (SSBE) of patients with EAC or without EAC (control). To identify candidate biomarker genes, microarray analysis was performed for a training set of 28 American samples. To confirm the microarray results, expression levels of the 16 candidate biomarkers were evaluated by real-time polymerase chain reaction analysis, using samples collected from an additional 53 American patients. In addition, we also performed a functional analysis for these genes using Gene Ontology (GO) enrichment analysis.
resultsAmong the 16 genes identified as differentially expressed by microarray analysis, the GO analysis indicated matrix metalloproteinase (MMP) family associated with 'collagen metabolic process' and 'multicellular organismal macromolecule metabolic process' as the two top biological processes. Brushing samples of patients with EAC showed up-regulated expression of decay-accelerating factors (DAF and CD55) and topoisomerase type Iiα (TOP2A), and down-regulated expression of the sodium channel epithelial 1 beta subunit (SCNN1B).
conclusionsThe up-regulation of CD55 and TOP2A, and the down-regulation of SCNN1B were common to the brushing samples and might serve as molecular biomarkers for identifying EAC in patients with SSBE.
trial registrationUniversity Hospital Medical Information Network (UMIN) (000004004).
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