Correlation between Expression of hsa-miR-490-5p and NFAT5 in Peripheral Blood Mononuclear Cell Obtained from Breast Cancer Patients

Document Type: Research Article


1 Department of Biology, Qom Branch, Islamic Azad University, Qom, Iran

2 Department of Photo Healing and Regeneration, Medical Laser Research Center, Yara Institute, ACECR, Tehran, Iran


Breast cancer is a complex genetic disease that has an average annual incidence of two million people and the second leading cause of death among women all over the world. Micro-RNAs are consistently reported to regulate gene expression in all cancers. The present study, the correlation between the expression of hsa-miR-490-5p and nuclear factor of activated T-cells 5 (NFAT5) in breast cancer were investigated. NFAT5 nuclear accumulation occurs regardless of Wnt/β-catenin activated signaling in a substantial portion of breast cancer. The analysis of prediction target and dual-luciferase reporter assays supported that hsa-miR-490-5p directly targeted NFAT5 and suppressed the expression of NFAT5. In a cross-sectional comparative study, peripheral blood samples were collected from 30 subjects with breast cancer and 30 healthy individuals as a control group. Total mRNA was extracted from peripheral blood mononuclear cells (PBMCs) and cDNA was synthesized to study the NFAT5 and hsa-miR-490-5p gene expression variations by real-time PCR. A significant decrease was observed in gene expression and sera concentration of NFAT5, hsa-miR-490-5p in PBMCs of breast cancer patients. The obtained results indicated that hsa-miR-490-5p acts as oncomir in serum by targeting NFAT5 direct (p<0.05). 


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