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miR-125b-5p, miR-155-3p, and miR-214-5p and Target <i>E2F2</i> Gene in Oral Squamous Cell Carcinoma
oleh: Karolina Gołąbek, Dorota Hudy, Agata Świętek, Jadwiga Gaździcka, Natalia Dąbrowska, Katarzyna Miśkiewicz-Orczyk, Natalia Zięba, Maciej Misiołek, Joanna Katarzyna Strzelczyk
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2023-03-01 |
Deskripsi
It is known that E2F2 (E2F transcription factor 2) plays an important role as controller in the cell cycle. This study aimed to analyse the expression of the <i>E2F2</i> gene and E2F2 protein and demonstrate <i>E2F2</i> target microRNAs (miRNAs) candidates (miR-125b-5p, miR-155-3p, and miR-214-5p) in oral squamous cell carcinoma tumour and margin samples. The study group consisted 50 patients. The <i>E2F2</i> gene and miRNAs expression levels were assessed by qPCR, while the E2F2 protein was assessed by ELISA. When analysing the effect of miRNAs expression on <i>E2F2</i> gene expression and E2F2 protein level, we observed no statistically significant correlations. miR-125b-5p was downregulated, while miR-155-3p, and miR-214-5p were upregulated in tumour samples compared to margin. We observed a difference between the miR-125b-5p expression level in smokers and non-smokers in margin samples. Furthermore, HPV-positive individuals had a significantly higher miR-125b-5p and miR-214-5p expression level compared to HPV-negative patients in tumour samples. The study result showed that the <i>E2F2</i> gene is not the target for analysed miRNAs in OSCC. Moreover, miR-155-3p and miR-125b-5p could play roles in the pathogenesis of OSCC. A differential expression of the analysed miRNAs was observed in response to tobacco smoke and HPV status.