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Mir-146A Is Deregulated in Gastric Cancer Publisher Pubmed



Adami B1 ; Tabatabaeian H2, 3 ; Ghaedi K4, 5 ; Talebi A6 ; Azadeh M7 ; Dehdashtian E1
Authors
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Authors Affiliations
  1. 1. Department of Microbiology, Faculty of Biological Science, Islamic Azad University, Falavarjan Branch, Isfahan, Iran
  2. 2. Department of Biology, Division of Genetics, Faculty of Sciences, University of Isfahan, Iran
  3. 3. Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
  4. 4. Department of Biology, Division of Cellular and Molecular Biology, Faculty of Sciences, University of Isfahan, Isfahan, 81746-73441, Iran
  5. 5. Department of Cellular Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Iran
  6. 6. Department of Pathology, School of Medicine, Isfahan University of Medical Science, Iran
  7. 7. Zist-Fanavari Novin Biotechnology Institute, Isfahan, Iran

Source: Journal of Cancer Research and Therapeutics Published:2019


Abstract

Background: Gastric cancer is one of the most significant reasons for cancer-related death. miR-146a is one of the dysregulated factors associated with gastric tumorigenesis. However, deregulation of this microRNA (miRNA) has become controversial. Moreover, the inflammation-mediating role of this miRNA implies that miR-146a might be dysregulated by gastric cancer-related pathogens, such as Helicobacter pylori. However, the dysregulation of miR-146a in H. pylori-infected gastric tumors has not been widely studied. Objectives: We aimed to analyze the expression level of miR-146a in gastric cancer tissues and then to assess any potential association between miR-146a and H. pylori infection and other clinical characteristics. Materials and Methods: miR-146a expression level was quantitatively studied by reverse transcription quantitative polymerase chain reaction, in 144 fresh tissues including 44 normal and 100 gastric cancer samples. Results: A dramatic overexpression of miR-146a was observed in primary gastric tumors. miR-146a showed lower expression in progressed tumors with greater stages and lymph node metastasis. Conclusion: miR-146a is highly expressed in primary gastric tumor independent of H. pylori infection. It is highly expressed in the lower stages and lymph node-negative tumors. It might suggest the importance of upregulation and downregulation of this miRNA in the initiating/promoting and progressive steps of gastric tumorigenesis, respectively. © 2019 Journal of Cancer Research and Therapeutics | Published by Wolters Kluwer - Medknow.
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