Volume 10, Issue 2 (Vol.10 No.2 Jul 2021)                   rbmb.net 2021, 10(2): 243-256 | Back to browse issues page

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Noohi M, Hakemi-vala M, Nowroozi J, Fatemi S, Dezfulian M. Prediction of Blood miRNA-mRNA Regulatory Network in Gastric Cancer. rbmb.net. 2021; 10 (2) :243-256
URL: http://rbmb.net/article-1-598-en.html
Department of Microbiology, Medical School, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Abstract:   (1531 Views)
Background: The aim of the study was to suggest a high specific and sensitive blood biomarker for early GC diagnosis.
Methods: the expression data of miRNAs and mRNAs were collected from the blood samples of the GC patients based on literature mining. Bioinformatics tools and databases (PANTHER, TargetScan, miRTarBase, miRDB, STRING, and Cytoscape) were used to predict the regulatory relationship. Subsequently, expression level of the selected miRNA was evaluated in the blood samples of gastritis patients to recognize the common miRNA between the GC and gastritis patients.

Results: Analysis of 40 target genes by MCODE (installed in Cytoscape software) indicated 4 hub genes (WWP1, SKP2, KLHL42, and FBXO11) as a significant cluster in the PPI network related to miR-21, with Node Score Cutoff: 0.2, Degree Cutoff: 2 and K-Core: 2. In addition, the miRNA RT-qPCR results showed that, the expression level of miR-21 was significantly higher in gastritis group compared to the healthy group (p< 0.05).

Conclusions: the present study clearly demonstrated the increasing level of blood miR-21 among the gastritis patients infected by H. pylori. Therefore, the altered miRNAs, especially overexpression of onco-miRs, may identify a potential link between miRNAs and pathogenesis of the H. pylori–related complications.
Full-Text [PDF 744 kb]   (633 Downloads)    
Type of Article: Original Article | Subject: Molecular Biology
Received: 2020/11/4 | Accepted: 2020/11/15 | Published: 2021/08/26

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