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Aberrant expression of miR-141 and nuclear receptor small heterodimer partner in clinical samples of prostate cancer.

Khorasani, Maryam and Teimoori-Toolabi, L and Naserpour Farivar, Taghi and Asgari, M and Abolhasani, M and Shahrokh, H and Afkar, A and Kalantari, E and Peymani, Dr. Amir and Mahdian, R Aberrant expression of miR-141 and nuclear receptor small heterodimer partner in clinical samples of prostate cancer. Cancer Biomarkers.

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Abstract

BACKGROUND: Prostate cancer (PCa) is the second most common cancer in men worldwide. Currently, prostate-specific antigen (PSA) test and digital rectal exam are the main screening tests used for PCa diagnosis. However, due to the low specificity of these tests, new alternative biomarkers such as deregulated RNAs and microRNAs have been implemented. OBJECTIVES: Aberrant expression of small heterodimer partner gene (SHP, NR0B2) and mir-141 are reported in various cancers. The aim of this study was to investigate the SHP and miR-141 expression level in tissue samples of prostate cancer. METHODS: The expression level of SHP gene and miR-141 was assessed by real time PCR and their relative amounts were calculated by the Δ⁢ΔCT method. Also, IHC technique was used to determine the expression level of SHP protein. RESULTS: The miR-141 was significantly up-regulated in the samples of metastatic tumors compared to localized tumor samples (P< 0.001, 31.17-fold change). Tumor samples showed lower SHP mRNA expression level than BPH samples (p= 0.014, 4.7-fold change). The results of paired t-test analysis showed there was no significant difference between the SHP gene expression in PCa samples and their matched tumor-adjacent normal tissue (p= 0.5). CONCLUSIONS: The data obtained in our study confirm the involvement of miR-141 in PCa progression and metastasis. These effects could be mediated by AR via down-regulation of its co-repressor protein, i.e., SHP. KEYWORDS: Immunohistochemistry; Prostate cancer; SHP gene; biomarker; gene expression; miR-141; nuclear receptors

Item Type: Article
Subjects: UNSPECIFIED
Divisions: University Portal > research center > mmrc
Depositing User: pr mmrc research portal
Date Deposited: 13 May 2018 06:04
Last Modified: 13 May 2018 06:04
URI: http://eprints.qums.ac.ir/id/eprint/7439

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