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Molano M, Moreno-Acosta P, Morales N, Burgos M, Buitrago L, Gamboa O, Alvarez R, Garland SM, Tabrizi SN, Steenbergen RDM, Mejía JC. Association Between Type-specific HPV Infections and hTERT DNA Methylation in Patients with Invasive Cervical Cancer. Cancer Genomics Proteomics 2017; 13:483-491. [PMID: 27807071 DOI: 10.21873/cgp.20011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Accepted: 09/21/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND There exists limited information on the role of hTERT methylation, and its association with type-specific HPV infections in cervical cancer. MATERIALS AND METHODS Eighty-seven frozen samples were analyzed for type-specific HPV infection using a GP5+/GP6+ PCR-RLB assay (RLB). hTERT DNA methylation analysis was performed using a newly developed PCR-RLB-hTERT. RESULTS Ninety-three percent of samples were HPV-positive and fifteen different types were detected. hTERT methylation analysis of region 1 revealed no methylation in 78.8% of the samples and partial methylation in 21.2%. In region two, 68.2% showed no methylation and 31.8% showed a pattern of partial methylation. An association between the alpha 9 and alpha 7 species with a pattern of no methylation of hTERT in the region 1 was established (p=0.02 and p=0.03, respectively). CONCLUSION Differences in patterns of methylation of the hTERT core promoter [region 1 (nt -208 to -1) and region 2 (nt +1 to +104) relative to first ATG] are related to the HPV species present.
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Affiliation(s)
- Mónica Molano
- Research Group in Cancer Biology, Research Branch, National Cancer Institute, Bogotá, Colombia.,Research Group in Radiobiology Clinical, Molecular and Cellular, National Cancer Institute, Bogotá, Colombia.,Microbiology and Infection Diseases, The Royal Women´s Hospital, Melbourne, VIC, Australia
| | - Pablo Moreno-Acosta
- Research Group in Cancer Biology, Research Branch, National Cancer Institute, Bogotá, Colombia .,Research Group in Radiobiology Clinical, Molecular and Cellular, National Cancer Institute, Bogotá, Colombia
| | - Nicolás Morales
- Research Group in Cancer Biology, Research Branch, National Cancer Institute, Bogotá, Colombia
| | - Marcela Burgos
- Research Group in Cancer Biology, Research Branch, National Cancer Institute, Bogotá, Colombia
| | - Lina Buitrago
- Unit Group of Analysis, Research Branch, National Cancer Institute, Bogotá, Colombia
| | - Oscar Gamboa
- Research Group in Radiobiology Clinical, Molecular and Cellular, National Cancer Institute, Bogotá, Colombia.,Unit Group of Analysis, Research Branch, National Cancer Institute, Bogotá, Colombia
| | - Rayner Alvarez
- Research Group in Cancer Biology, Research Branch, National Cancer Institute, Bogotá, Colombia.,Research Group in Radiobiology Clinical, Molecular and Cellular, National Cancer Institute, Bogotá, Colombia
| | - Suzanne M Garland
- Microbiology and Infection Diseases, The Royal Women´s Hospital, Melbourne, VIC, Australia.,Murdoch Children's Research Institute, Parkville, VIC, Australia.,Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, VIC, Australia
| | - Sepehr N Tabrizi
- Microbiology and Infection Diseases, The Royal Women´s Hospital, Melbourne, VIC, Australia.,Murdoch Children's Research Institute, Parkville, VIC, Australia.,Department of Obstetrics and Gynaecology, University of Melbourne, Parkville, VIC, Australia
| | | | - Juan Carlos Mejía
- Oncological Pathology Group, National Cancer Institute, Bogotá, Colombia
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