Epidrug Modulated Expression of MiR-152 and MiR-148a Reverse Cisplatin Resistance in Ovarian Cancer Cells: An Experimental In-vitro Study
| Author | Sahel Khajehnoori | en |
| Author | Fatemeh Zarei | en |
| Author | Mahta Mazaheri | en |
| Author | Ali Dehghani-Firoozabadi | en |
| Issued Date | 2020-07-31 | en |
| Abstract | Cisplatin is a common agent which is used to treat Epithelial Ovarian Cancer (EOC), but cisplatin resistance is a major obstacle in successful treatment of ovarian cancer. Aberration in epigenetic changes play an important role in disregulation of gene expression. MiR-152 and miR-148a are frequently down-regulated in EOC due to promoter hyper-methylation. DNA methyltransferase1 (DNMT1), the main enzyme in maintenance of the pattern of DNA methylation, is one of the targets of miR-152 and miR-148a. Aberrantly up-regulation of DNMT1 is responsible for silencing of tumor suppressor genes in carcinogenesis. We hypothesized that re-expression of miR-152 and miR-148a and consequently down-regulation of DNMT1 may resensitize cancerous cells to chemotherapeutics agents. The aim of the present study is to investigate the effect of 5-azacytidine (5-Aza) and Trichostatin A on miR-152 and miR-148a expression in A2780CP ovarian cancer cell line. Optimal doses of 5-Azacitidine and TSA were measured by 3-(4,5-dimethylthazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. A2780CP cell line was treated by each drugs, alone or in combination and the expression of miR-148a, miR-152 and DNMT1 was evaluated by Real-Time Quantitative Reverse Transcription-Polymerase Chain Reaction (RT-qPCR). The results revealed that TSA and 5-Azacytidine are able to revive the expression of miR-148a and miR-152 genes and mediate growth inhibition of epithelial ovarian cancer cells. The present study suggests that re-expression of miR-148a and miR-152 by epigenetic therapy aiming to DNMT1 suppression might resensitize resistant ovarian tumors to conventional chemotherapy. | en |
| DOI | https://doi.org/10.22037/ijpr.2020.15450.13217 | en |
| Keyword | Ovarian neoplasms | en |
| Keyword | MicroRNAs | en |
| Keyword | DNA (cytosine-5)-methyltransferase 1 | en |
| Keyword | Trichostatin A | en |
| Keyword | Azacitidine | en |
| Publisher | Brieflands | en |
| Title | Epidrug Modulated Expression of MiR-152 and MiR-148a Reverse Cisplatin Resistance in Ovarian Cancer Cells: An Experimental In-vitro Study | en |
| Type | Original Article | en |
Files
Original bundle
1 - 1 of 1
Loading...
- Name:
- ijpr-19-509.pdf
- Size:
- 788.92 KB
- Format:
- Adobe Portable Document Format
- Description:
- Article/s PDF