Evaluation of Expression of Long ‎Non-Coding RNAs of GAS5, ‎NEAT1 and SRA Genes in ‎Patients with Breast Cancer and ‎Healthy People

Breast cancer accounts for about 10% of all cancers in the world and accounts for 30% of all cancers in women. Therefore, its early detection will play an important role in its treatment. Because lncRNAs are expressed differently in cancerous tissues than in normal tissues, they increase the potential of these molecules as biomarkers for disease diagnosis. Also, changes in the expression of lncRNAs in patients with different types of cancer subtypes and different races intensify the importance of using these molecules as biomarkers for disease diagnosis. Therefore, the aim of this study was to investigate the expression of GAS5, NEAT1 and SRA lncRNAs in cancer specimens with cancer and in healthy individuals. In this study, from the tumor tissue of 22 patients with breast cancer and also 22 samples of healthy tissue from individuals under the direct supervision of a pathologist and according to clinical signs and laboratory findings were collected from hospitals in Isfahan. After RNA extraction from tumor and normal tissue, cDNA was fabricated according to RT-qPCR method. The lncRNA expression level of GAS5, NEAT1 and SRA genes was calculated by ∆∆CT method. The expression pattern was analyzed using Rest 2009 software as well as SPSS version 16. Real Time Reverse transcription-PCR results showed that the mean relative gene expression in tumor samples was significantly lower for GAS5 and NEAT1 lncRNAs than normal samples. But no expression change was observed for lncRNA SRA.