Hui Chen1, Dun Pan1, Zhihuang Yang1, Liangqing Li1. 1. Department of Gastrointestinal Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou 350000, China.
Abstract
BACKGROUND: The present study aimed to identify key differentially expressed genes (DEGs) and miRNAs (DEmiRNAs) in gastric adenocarcinoma. METHODS: We performed integrated analysis to determine DEGs and DEmiRNAs of gastric adenocarcinoma based on the GEO database. A DEmiRNA-target interaction network was established. GO and KEGG pathway enrichment analyses were utilized. Then, MKN45 cells were transfected with shRNA-RAB23 to knock down the expression of RAB23. CCK-8, transwell and flow cytometry assays were utilized to measure the capacities for cell proliferation, migration and apoptosis, and the apoptosis-related gene and protein levels were measured by using polymerase chain reaction (PCR) and Western blot, respectively. Colocalization analysis of Snc1 with the vesicular protein VAMP3 and the endoplasmic reticulum protein Calnexin was performed to assess the influence of RAB23 on vesicle transport. Finally, we performed metabolomic analysis by using gas chromatography mass spectrometry (GC-MS). RESULTS: We performed MMIA of gastric adenocarcinoma based on two miRNA datasets and two mRNA datasets. A total of 4,586 DEmRNAs and 30 DEmiRNAs were obtained. The DEmRNAs of gastric adenocarcinoma were significantly enriched in PI3K/Akt signaling. We identified three interactions, hsa-miR-23a-3p-PTPN4, hsa-miR-20b-5p (hsa-miR-130a-3p)-TNFRSF10B, and hsa-miR-130a-3p (hsa-miR-363-3p)-RAB23, that may be related to the pathogenesis of gastric adenocarcinoma. The growth of MKN45 cells was inhibited by RAB23 knockdown via shRNA-RAB23 transfection. Metabolic analysis of three groups revealed a number of significantly altered metabolites, including glycerol, niacinamide, and nonadecanoic acid methylester. CONCLUSIONS: RAB23 might be a target gene of hsa-miR-130a-3p and hsa-miR-363-3p. In gastric adenocarcinoma cells, knockdown of RAB23 inhibited cell proliferation, migration, and invasion and increased apoptosis by downregulating the PI3K/Akt pathway. 2019 Annals of Translational Medicine. All rights reserved.
BACKGROUND: The present study aimed to identify key differentially expressed genes (DEGs) and miRNAs (DEmiRNAs) in gastric adenocarcinoma. METHODS: We performed integrated analysis to determine DEGs and DEmiRNAs of gastric adenocarcinoma based on the GEO database. A DEmiRNA-target interaction network was established. GO and KEGG pathway enrichment analyses were utilized. Then, MKN45 cells were transfected with shRNA-RAB23 to knock down the expression of RAB23. CCK-8, transwell and flow cytometry assays were utilized to measure the capacities for cell proliferation, migration and apoptosis, and the apoptosis-related gene and protein levels were measured by using polymerase chain reaction (PCR) and Western blot, respectively. Colocalization analysis of Snc1 with the vesicular protein VAMP3 and the endoplasmic reticulum protein Calnexin was performed to assess the influence of RAB23 on vesicle transport. Finally, we performed metabolomic analysis by using gas chromatography mass spectrometry (GC-MS). RESULTS: We performed MMIA of gastric adenocarcinoma based on two miRNA datasets and two mRNA datasets. A total of 4,586 DEmRNAs and 30 DEmiRNAs were obtained. The DEmRNAs of gastric adenocarcinoma were significantly enriched in PI3K/Akt signaling. We identified three interactions, hsa-miR-23a-3p-PTPN4, hsa-miR-20b-5p (hsa-miR-130a-3p)-TNFRSF10B, and hsa-miR-130a-3p (hsa-miR-363-3p)-RAB23, that may be related to the pathogenesis of gastric adenocarcinoma. The growth of MKN45 cells was inhibited by RAB23 knockdown via shRNA-RAB23 transfection. Metabolic analysis of three groups revealed a number of significantly altered metabolites, including glycerol, niacinamide, and nonadecanoic acid methylester. CONCLUSIONS: RAB23 might be a target gene of hsa-miR-130a-3p and hsa-miR-363-3p. In gastric adenocarcinoma cells, knockdown of RAB23 inhibited cell proliferation, migration, and invasion and increased apoptosis by downregulating the PI3K/Akt pathway. 2019 Annals of Translational Medicine. All rights reserved.
Authors: Abitha Jacob; Jian Jing; James Lee; Pepper Schedin; Simon M Gilbert; Andrew A Peden; Jagath R Junutula; Rytis Prekeris Journal: J Cell Sci Date: 2013-07-31 Impact factor: 5.285
Authors: Viviane P Muniz; Ryan W Askeland; Xuefeng Zhang; Sara M Reed; Van S Tompkins; Jussara Hagen; Bradley D McDowell; Anna Button; Brian J Smith; Jamie A Weydert; James J Mezhir; Dawn E Quelle Journal: Genes Cancer Date: 2013-07