AI Article Synopsis
- Cervical cancer is a prevalent type of cancer in women, and microRNAs (miRNAs) play a key role in cancer development and diagnosis.
- Researchers found 79 miRNAs with altered expression in high-grade precancerous cervical lesions compared to normal tissues.
- Among these, miR-409-3p was identified as potentially being a tumor suppressor and a promising early biomarker for cervical cancer, as it inversely correlates with the E6 oncogene levels.
Article Abstract
Cervical cancer is one of the most common malignancies in women. MicroRNAs (miRNAs) are involved in a variety of fundamental cellular processes, including carcinogenesis. The potential utilization of aberrantly expressed miRNAs as novel biomarkers in cervical cancer diagnostics is growing. We investigated miRNA expression profiles during the progression of dysplasia in cervical epithelium to identify aberrantly expressed miRNAs. High-throughput miRNA profiling of high-grade precancerous lesions identified 79 miRNAs showing significant difference in expression values compared to normal cervical epithelium. Ten selected miRNAs were subsequently measured in an independent group of samples to validate them as promising biomarkers of cervical carcinogenesis. MicroRNAs miR-10b-5p, miR-34c-5p, miR-409-3p and miR-411-5p were confirmed as downregulated, while miR-10a-5p, miR-132-3p, miR-141-5p were significantly upregulated in dysplastic cervical tissues. Further investigation revealed an inverse correlation of miR-409-3p with E6 mRNA levels in precancerous cervical lesions. Subsequent in vitro analyses showed a direct involvement of this miRNA in the regulation of E6 oncogene levels, thus confirming a potential tumor suppressor function of miR-409-3p in cervical malignancies. Hence, miR-409-3p may represent a useful early marker and a potential therapeutic target for cervical cancer.
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| http://dx.doi.org/10.1016/j.antiviral.2019.01.019 | DOI Listing |
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