Advanced Biomedical Research

Expression of microRNA-370 in human breast cancer compare with normal samples

Authors

1 Department of Immunology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran

2 Department of Immunology, Faculty of Medicine; Applied Physiology Research Centre, Isfahan University of Medical Sciences, Isfahan, Iran

3 Genetics and Molecular Biology, Faculty of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran

Abstract

Background: Breast cancer is the second leading cause of deaths from cancer in the woman. MicroRNAs (miRNAs) are endogenous noncoding RNAs that are known critical player in carcinogenesis. The role of miR-370 in malignancies remains controversial because of its levels varying in different cancers according to its targets while the role of miR-370 in breast cancer has not been addressed so far. The aim of this study was to identify the expression pattern of miR-370 in human breast cancer tissue compared to adjacent healthy tissue.
Materials and Methods: Twenty-two fresh frozen tissues (normal and malignant) from patients with breast cancer were examined for miR-370 by quantitative real-time polymerase chain reaction method at 2013.
Results: We observed up-regulation (six-fold higher) of miR-370 in breast cancer tissue compared with normal adjacent tissue. Tumor samples in stage III, invasive ductal type, larger tumor size, human epidermal growth-factor receptor 2+, estrogen receptor/progesterone receptor−, P53 − status showed significantly increased expression in miR-370.
Conclusion: Together, miR-370 may acts as an onco-miRNA, and it may have a novel role in breast cancer. Detection of miR-370 and its targets could be helpful as a diagnostic biomarker and therapeutic target.

Keywords

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Advanced Biomedical Research
Volume 2016, july
July 2016
Pages 1-6