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Comprehensive gene expression analysis in gallbladder mucosal epithelial cells of dogs with gallbladder mucocele
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Comprehensive gene expression analysis in gallbladder mucosal epithelial cells of dogs with gallbladder mucocele
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Journal Article
Comprehensive gene expression analysis in gallbladder mucosal epithelial cells of dogs with gallbladder mucocele
2024
Overview
Background Gallbladder mucocele (GBM) is a common disease in the canine gallbladder. Although the pathogenesis of GBM remains unclear, we recently reported that the excessive accumulation of mucin in the gallbladder is not a result of overproduction by gallbladder epithelial cells (GBECs). Hypothesis/Objectives Changes in the function of GBECs other than the production of mucin are associated with the pathogenesis of GBM. We performed an RNA sequencing (RNA‐seq) analysis to comprehensively search for abnormalities in gene expression profiles of GBECs in dogs with GBM. Animals Fifteen dogs with GBM and 8 dogs euthanized for reasons other than gallbladder disease were included. Methods The GBECs were isolated from gallbladder tissues to extract RNA. The RNA‐seq analysis was performed using the samples from 3 GBM cases and 3 dogs with normal gallbladders, and the gene expression profiles were compared between the 2 groups. Differences in mRNA expression levels of the extracted differentially expressed genes (DEGs) were validated by quantitative reverse transcription polymerase chain reaction (RT‐qPCR) using samples of 15 GBM cases and 8 dogs with normal gallbladders. Results Comparison of gene expression profiles by RNA‐seq extracted 367 DEGs, including ANO1, a chloride channel associated with changes in mucin morphology, and HTR4, which regulates the function of chloride channels. The ANO1 and HTR4 genes were confirmed to be downregulated in the GBM group by RT‐qPCR. Conclusions and Clinical Importance Our results suggest that GBM may be associated with decreased function of chloride channels expressed in GBECs.
Publisher
John Wiley & Sons, Inc,Wiley
Subject
/ ANO1
/ Dogs
/ Epithelial Cells - metabolism
/ Female
/ Gallbladder Diseases - genetics
/ Gallbladder Diseases - metabolism
/ Gallbladder Diseases - veterinary
/ gallbladder epithelial cells
/ Gene Expression Profiling - veterinary
/ Genomes
/ HTR4
/ Male
/ mucins
/ Ontology
/ reverse transcriptase polymerase chain reaction
/ RNA
/ RNA‐seq
