The Role of microRNAs, Long Non-coding RNAs, and Circular RNAs in Cervical Cancer

Prolonged infection of uterine cervix epithelium with human papillomavirus (HPV) and constitutive expression of viral oncogenes have been recognized as the main cause of the complex molecular changes leading to transformation of cervical epithelial cells. Deregulated expression of microRNAs (miRNA), long non-coding RNAs (lncRNA), and circular RNAs (circRNA) is involved in the initiation and promotion processes of cervical cancer development. Expression profiling of small RNAs in cervical neoplasia revealed up-regulated “oncogenic” miRNAs, such as miR-10a, miR-21, miR-19, and miR-146a, and down regulated “tumor suppressive” miRNAs, including miR-29a, miR-372, miR-214, and miR-218, associated with cell growth, malignant transformation, cell migration, and invasion. Also several lncRNAs, comprising among others HOTAIR, MALAT1, GAS5, and MEG3, have shown to be associated with various pathogenic processes such as tumor progression, invasion as well as therapeutic resistance and emerged as new diagnostic and prognostic biomarkers in cervical cancer. Moreover, human genes encoded circular RNAs, such as has_circ-0018289, have shown to sponge specific miRNAs and to concur to the deregulation of target genes. Viral encoded circE7 has also demonstrated to overexpress E7 oncoprotein thus contributing to cell transformation. In this review, we summarize current literature on the complex interplay between miRNAs, lncRNAs, and circRNAs and their role in cervical neop...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research

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We report a case of misdiagnosed endometrial cancer by D&C, but with a positive cytopathological finding. Following that, a meta-analysis including 4,179 patients of endometrial diseases with cyto-histopathological results was performed to assess the value of the endometrial cytological method in endometrial cancer diagnosis. The pooled sensitivity and specificity of the cytological method in detecting endometrial atypical hyperplasia or cancer was 0.91[95% confidence interval (CI) 0.74–0.97] and 0.96 (95% CI 0.90–0.99), respectively. The pooled positive likelihood ratio and negative likelihood ratio was 25.4 (...
Source: Frontiers in Oncology - Category: Cancer & Oncology Source Type: research
CONCLUSION: HPV status in oropharyngeal tumors was not correlated with a history of ≥ IIC in cervical examinations. The effect on cervical dysplasia may be masked by a higher incidence of smoking among the OPSCC HPV-negative group. PMID: 30626248 [PubMed - as supplied by publisher]
Source: Acta Oncologica - Category: Cancer & Oncology Authors: Tags: Acta Oncol Source Type: research
Conclusions: Tumor regression can occur following treatment of an epithelial cancer with gene-engineered T cells. These findings support continued study of E7 T cells and possibly other types of gene-engineered T cells in epithelial cancers.DisclosuresAdhikary: Kite Pharma: Employment. Schweitzer: Kite Pharma: Employment. Astrow: Kite Pharma: Employment. Hinrichs: Kite Pharma: Research Funding; NIH: Patents &Royalties: NIH patents related to cell therapy.
Source: Blood - Category: Hematology Authors: Tags: 801. Gene Therapy and Transfer: Clinical Trials for Hemophilia and Using CAR T Cells Source Type: research
This study aims to determine the diagnostic significance of uterine epithelial cells stability free body of iron protoporphyrin reduced state (FH) detection combined human papillomavirus (HPV) screening for cervical cancer. PATIENTS AND METHODS: A total of 800 patients were enrolled. FH test and HPV genotyping detection were performed. The cases with abnormal results were treated by colposcopy. Pathological detection was treated as the golden standard. Coincidence rate, sensitivity, and specificity were calculated. RESULTS: The positive rate of FH and high-risk HPV rate were 11.5% and 16.5%, respectively. The coinc...
Source: European Review for Medical and Pharmacological Sciences - Category: Drugs & Pharmacology Tags: Eur Rev Med Pharmacol Sci Source Type: research
Immunohistochemical detection of E7 human papillomavirus protein in pre‑malignant and malignant lesions of the uterine cervix. Mol Med Rep. 2018 Aug 22;: Authors: Shi L, Han F, Shi C, Huang Y, Liu Y, Chang X Abstract Human papillomavirus (HPV) E7 protein expression is caused by HPV viral DNA integration into human cellular DNA, and is a prerequisite for the development and progression of cervical cancer. The present study aimed to evaluate the role of E7 protein as a biomarker for identification of transformed cervical epithelial cells during the early stages of cervical cancer. Specific monoclonal a...
Source: Molecular Medicine Reports - Category: Molecular Biology Tags: Mol Med Rep Source Type: research
Circulating tumor cells (CTC) are newly discovered biomarkers of cancers. Although many systems detect CTC, a gold standard has not yet been established. We analyzed CTC in uterine cervical cancer patients using an advanced version of conditionally replicative adenovirus targeting telomerase‐positive cells, which was enabled to infect coxsackievirus‐adenovirus receptor‐negative cells and to reduce false‐positive signals in myeloid cells. Blood samples from cervical cancer patients were hemolyzed and infected with the virus and then labeled with fluorescent anti‐CD45 and anti‐pan cytokeratin antibodies. GFP (+)/...
Source: Cancer Science - Category: Cancer & Oncology Authors: Tags: ORIGINAL ARTICLE Source Type: research
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Source: Cancer Science - Category: Cancer & Oncology Authors: Tags: Original Article Source Type: research
It has been shown that γδ T cells protect against the formation of squamous cell carcinoma (SCC) in several models. However, the role of γδ T cells in human papillomavirus (HPV)-associated uterine cervical SCC, the third-leading cause of death by cancer in women, is unknown. Here, we investigated the impact...
Source: Proceedings of the National Academy of Sciences - Category: Science Authors: Tags: PNAS Plus Source Type: research
Conclusions The expression of the detection of cervical cancer in high-risk human papilloma virus HPV-18 E6 and E7 mRNA, and the invasion, migration, proliferation inhibition gene, epithelial mesenchymal transition and proliferation related gene protein content, HPV expression rate of mRNA increased with the development of cervical cancer, the expression is also enhanced. The expression has a certain correlation between the level and development of cervical cancer. Through the above indicators, the development of cervical cancer monitoring and treatment to provide important clinical guidance.
Source: Asian Pacific Journal of Tropical Medicine - Category: Tropical Medicine Source Type: research
Authors: Hang S, Tiwari AF, Ngan HY, Yip YL, Cheung AL, Tsao SW, Deng W Abstract Cervical epithelial cell immortalization with defined genetic factors without viral oncogenes has never been reported. Here we report that HPV-negative cervical epithelial cells failed to be immortalized by telomerase activation or the combination of p53 knockdown and telomerase activation. Under those conditions, p16INK4a expression was always elevated during the late stage of limited cell lifespan, suggesting that cervical epithelial cells possess an intrinsic property of uniquely stringent activation of p16INK4a, which may offer an ...
Source: Oncotarget - Category: Cancer & Oncology Tags: Oncotarget Source Type: research
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