1. Alteration of Gene and miRNA Expression in Cervical Intraepithelial Neoplasia and Cervical Cancer.
- Author
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Dudea-Simon M, Mihu D, Pop LA, Ciortea R, Malutan AM, Diculescu D, Ciocan CA, Cojocneanu RM, Simon V, Bucuri C, Mocan-Hognogi R, Braicu C, and Berindan-Neagoe I
- Subjects
- Female, Humans, Papillomaviridae genetics, MicroRNAs genetics, Papillomavirus Infections, RNA, Long Noncoding, Uterine Cervical Neoplasms pathology, Uterine Cervical Dysplasia diagnosis
- Abstract
Background : Cervical cancer is one of the most common malignancies in women in terms of prevalence and mortality. Cervical cancer has some particularities that distinguish it from any other oncologic pathology: first, it is completely preventable by prompt detection of its precursor, cervical intraepithelial neoplasia (CIN); second, the Human Papillomavirus (HPV) infection is a known etiological agent; third, the mean age at diagnosis is much lower than in other oncologic conditions, as a consequence of the sexually-transmitted HPV. Methods : We evaluated the expression level of several long noncoding RNAs and a microRNA in samples from 30 patients with CIN, 9 with cervical cancer and 38 normal samples using qRT-PCR technology. Results : We observed higher expression levels for MEG3, DAPK1 , MLH1 and MALAT1 in CIN samples than in normal samples, whereas TIMP3 and SOX1 had lower expression levels. For cancer samples, DAPK1 , MLH1 and MALAT1 had higher expression, and MEG3 , TIMP3 and SOX1 had lower expression when compared to normal samples. In the case of CIN versus cancer samples, only MEG3 gene showed a statistically significant difference. The expression of miR-205-5p was lower in both CIN and cancer samples compared to normal samples. Conclusion: Decreased MEG3 expression could be considered an alarm signal in the transition from a premalignant cervical lesion to invasive cancer, while altered expression levels of TIMP3 , SOX1 , MLH1 , MALAT1 and miR-205-5p could serve as early biomarkers in the diagnosis of premalignant cervical lesions. Future studies, including a larger number of patients with CIN, will be of particular importance in validating these observations.
- Published
- 2022
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