Journal
ONCOTARGETS AND THERAPY
Volume 14, Issue -, Pages 3239-3249Publisher
DOVE MEDICAL PRESS LTD
DOI: 10.2147/OTT.S274215
Keywords
gastric cancer; microRNA; autophagy; migration; invasion
Categories
Funding
- National Key Research and Development Project of China [2020YFA0907900]
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The study revealed that miR-29b-3p inhibits the migration and invasion of gastric cancer cells by regulating the MAZ protein, and induces apoptosis by controlling the expression of autophagy-related proteins.
Purpose: The purpose of this study was to investigate the relationship between microRNA-29b-3p (miR-29b-3p) and myc-associated zinc finger protein (MAZ) expression and the effects of this interaction on the proliferation, migration, and invasion of gastric cancer cells. Methods: qPCR and Western blots were used to detect the expression of miR-29b-3p and MAZ. The dual luciferase reporter gene system was used to explore whether MAZ is the target of miR-29b-3p. Cell function experiments and a mouse tumorigenesis model were used to determine the effects of miR-29b-3p overexpression and MAZ depletion on proliferation, migration, and invasion in gastric cancer cell lines and on tumor growth. Results: The expression level of miR-29b-3p was low and the expression level of MAZ was high in gastric cancer cells compared with normal human gastric mucosal epithelial cells. MAZ was the target gene of miR-29b-3p. The upregulation of miR-29b-3p reduces the expression of MAZ. Overexpression of miR-29b-3p and downregulation of MAZ inhibited the proliferation and migration of cancer cells and induced apoptosis by controlling the expression of autophagy-related proteins. MiR-29b-3p mimics inhibit tumor growth in mice. Conclusion: MiR-29b-3p inhibits the migration and invasion of gastric cancer cells by regulating the autophagy-related protein MAZ.
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