Document Type : Original Article
Authors
1 Department of Biotechnology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
2 Department of Biology, Faculty of Basic Sciences, Shahid Bahonar University of Kerman, Kerman, Iran
3 Department of Pathology, Imam Khomeini-Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
Abstract
Background: The most common cause of cervical cancer is human papillomavirus, which induces its carcinogenic properties on cells through two oncoproteins named E6 and E7. Viral miRNA and oncogenes can alter the expression levels of human miRNAs and genes. Examining the expression profile of miRNAs and their target genes in cervical cancer leads to the identification of miRNAs and genes that can be used as diagnostic biomarkers or therapeutic targets. MAP9 is one of the predicted targets of HPV16-miR-H2-1. In this study, changes in the expression level of MAP9 and a human miRNA regulating MAP9 are investigated in cervical cancer, and their potential as diagnostic biomarkers or therapeutic targets is evaluated.
Materials and methods: After predicting miRNAs regulating MAP9 using miRDB server, one of these miRNA assosiated with squamous cell carcinoma was selected for quantification in clinical samples. Formalin-fixed, paraffin-embedded (FFPE) blocks of cervical tissues from 30 patients with squamous cell carcinoma were used. Deparaffinization, RNA extraction, DNase treatment, and cDNA synthesis were performed for each sample. The expression level of selected miRNA and MAP9 in tumor and normal samples was investigated by Real-Time PCR method. The results were statistically analyzed.
Results: The significant upregulation of hsa-miR-142-5p and downregulation of MAP9 were observed in tumor samples compared with normal tissues. Roc curve analysis showed that hsa-miR-142-5p and MAP9 have high diagnostic capability for cervical cancer (AUC are 0.80 and 0.81 respectively).
Conclusion: hsa-miR-142-5p and MAP9 have the potential to be used as diagnostic biomarkers or therapeutic targets for cervical cancer.
Keywords
Main Subjects
)