The Analysis of Selected miRNAs and Target MDM2 Gene Expression in Oral Squamous Cell Carcinoma

Author:

Gołąbek Karolina1ORCID,Hudy Dorota1ORCID,Gaździcka Jadwiga1ORCID,Miśkiewicz-Orczyk Katarzyna2,Nowak-Chmura Magdalena3,Asman Marek1ORCID,Komosińska-Vassev Katarzyna4ORCID,Ścierski Wojciech2,Golusiński Wojciech5,Misiołek Maciej2,Strzelczyk Joanna Katarzyna1ORCID

Affiliation:

1. Department of Medical and Molecular Biology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 19 Jordana St., 41-808 Zabrze, Poland

2. Department of Otorhinolaryngology and Oncological Laryngology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, 10 C Skłodowska St., 41-800 Zabrze, Poland

3. Department of Invertebrate Zoology and Parasitology, Institute of Biology, Pedagogical University of Cracov, Podbrzezie 3 St., 31-054 Kraków, Poland

4. Department of Clinical Chemistry and Laboratory Diagnostics, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, 8 Jedności St., 41-200 Sosnowiec, Poland

5. Department of Head and Neck Surgery, Poznan University of Medical Sciences, The Greater Poland Cancer Centre, 15 Garbary St., 61-866 Poznan, Poland

Abstract

MiRNAs could play an important role in tumorigenesis and progression. The oncoprotein MDM2 (murine double minute 2) was identified as a negative regulator of the tumour suppressor p53. This study aims to analyse the expression of the MDM2 target miRNA candidates (miR-3613-3p, miR-371b-5p and miR-3658) and the MDM2 gene in oral squamous cell carcinoma tumour and margin samples and their association with the selected socio-demographic and clinicopathological characteristics. The study group consisted of 50 patients. The miRNAs and MDM2 gene expression levels were assessed by qPCR. The expression analysis of the miRNAs showed the expression of only one of them, i.e., miR-3613-3p. We found no statistically significant differences in the miR-3613-3p expression in tumour samples compared to the margin samples. When analysing the effect of smoking on miR-3613-3p expression, we demonstrated a statistically significant difference between smokers and non-smokers. In addition, we showed an association between the miR-3613-3p expression level and some clinical parameters in tumour samples (T, N and G). Our study demonstrates that miR-3613-3p overexpression is involved in the tumour progression of OSCC. This indicates that miR-3613-3p possesses potential prognostic values.

Funder

Medical University of Silesia

Publisher

MDPI AG

Subject

General Biochemistry, Genetics and Molecular Biology,Medicine (miscellaneous)

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