TY - JOUR AB - The incidence of esophageal fibrosis and benign esophageal stricture (BES) has increased in recent years due to the curative therapy for early‑stage esophageal carcinoma, including partial esophagectomy and esophageal endoscopic submucosal dissection (ESD). The aim of the present study was to identify key genes and associated pathways of esophageal fibrosis after the ESD procedure. During the esophageal ESD procedure, the esophageal tissue in the remaining submucosal layer, referred to as normal esophageal (NE) tissue, was collected, and 1 week thereafter, post‑operative esophageal (PE) tissue was obtained. High‑throughput sequencing was used to identify dysregulated microRNAs (miRNAs/miRs) between NE and PE tissues. According to the differentially expressed (DE) miRNAs, putative target genes were predicted. Gene Ontology, Kyoto Encyclopedia of Genes and Genomes enrichment analysis and DEmiRNA interaction network analysis were performed. Reverse transcription‑quantitative PCR (RT‑qPCR) was performed to validate the RNA‑sequencing results. A total of 199 miRNAs were determined to be DE between NE and PE tissues. Compared with the expression in the NE group, 83 miRNAs were significantly upregulated, while 116 miRNAs were significantly downregulated. According to these DE miRNAs, forkhead box O1 (FOXO1), paired box 6 (PAX6), phosphatidylinositol‑4,5‑bisphosphate 3‑kinase catalytic subunit alpha (PIK3CA) and adrenoceptor β1 (ADRB1) were DE genes regulated by five DE miRNAs, including miR‑223‑3p, miR‑142‑5p, miR‑582‑5p, miR‑21‑3p and miR‑218‑5p. The results suggested that certain pathways were markedly dysregulated, including FOXO, MAPK, AMP‑activated protein kinase and signaling pathways regulating the pluripotency of stem cells and proteoglycans in cancer. According to the RT‑qPCR results, the expression levels of FOXO1, PAX6, ADRB1, miR‑223‑3p, miR‑582‑5p, miR‑21‑3p and miR‑218‑5p were consistent with the integrated analysis. In conclusion, FOXO1, PAX6, PIK3CA and ADRB1 may have a role in esophageal fibrosis, regulated by miR‑223‑3p, miR‑142‑5p, miR‑582‑5p, miR‑21‑3p and miR‑218‑5p. The present results provided an improved understanding of the changes in the microenvironment during the process of esophageal fibrosis, as well as novel potential targets for the treatment of esophageal fibrosis and BES. AD - Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China AU - Zhang,Yin AU - Xu,Chunfang DA - 2021/10/01 DO - 10.3892/etm.2021.10610 IS - 4 JO - Exp Ther Med KW - esophageal fibrosis benign esophageal stricture high‑throughput sequencing differentially expressed microRNAs differentially expressed genes PY - 2021 SN - 1792-0981 1792-1015 SP - 1176 ST - Integrative analysis of miRNA‑mRNA expression profiles in esophageal fibrosis after ESD T2 - Experimental and Therapeutic Medicine TI - Integrative analysis of miRNA‑mRNA expression profiles in esophageal fibrosis after ESD UR - https://doi.org/10.3892/etm.2021.10610 VL - 22 ER -