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Article Abstract
Objective: To investigate the role and functions of FAM225A in gastric cancer.
Methods: The expressions of FAM225A, miR-206, ADAM12 and epithelial-mesenchymal transition (EMT)-related genes were detected by quantitative real-time PCR and Western blot. Functional experiments including cell counting kit-8, colony formation, wound-healing, and Transwell assays were conducted to analyze the biological characteristics of gastric cancer cells in different groups. Bioinformatics, dual-luciferase reporter assay and Pearson correlation coefficients were performed for determining the regulatory relationship of lncRNA-miRNA-mRNA. nude mouse xenografts and immunohistochemistry were used to verify the results .
Results: In gastric cancer, FAM225A and ADAM12 expressions were up-regulated, while miR-206 expression was down-regulated. Opposite to the regulatory effects of overexpressed FAM225A, blocking FAM225A expression reduced cell viability, migration, invasion and number of cell clones, increased E-Cadherin expression, inhibited N-Cadherin and Vimentin expressions, and ultimately promoted tumor growth. MiR-206 inhibitor partially offset the effects of siFAM225A. Moreover, FAM225A competitively bound to miR-206 to up-regulate ADAM12 expression. Overexpressed ADAM12 partially reversed the effect of miR-206 mimic on the biological characteristics of gastric cancer cells and EMT-related proteins.
Conclusion: Our research revealed that FAM225A-miR-206-ADAM12 axis may be a potential pathway for regulating gastric cancer.
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