Structural and functional impacts of E5 genetic variants of human papillomavirus type 31
| Autor: | R. C. O. Silva, Bárbara Simas Chagas, Marcus Vinicius de Aragão Batista, Antônio Humberto P. da Silva Júnior, Marconi Rego Barros Júnior, Rita de Cássia Pereira de Lima, Lindomar Pena, Ana Pavla Almeida Diniz Gurgel, D. L. Santos, Antonio Carlos de Freitas |
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| Rok vydání: | 2020 |
| Předmět: |
Adult
Cancer Research Adolescent Uterine Cervical Neoplasms Cervix Uteri Biology Protein Serine-Threonine Kinases medicine.disease_cause Epitope 03 medical and health sciences Young Adult Immune system Virology medicine Humans Human papillomavirus 31 Gene Phylogeny 030304 developmental biology Aged Cell Proliferation Genetics Aged 80 and over 0303 health sciences Mutation Oncogene 030306 microbiology Papillomavirus Infections Cancer Genetic Variation Oncogene Proteins Viral Middle Aged medicine.disease Transmembrane protein Infectious Diseases HEK293 Cells Female Carcinogenesis Signal Transduction |
| Zdroj: | Virus research. 290 |
| ISSN: | 1872-7492 |
| Popis: | Persistent infections caused by high-risk human papillomavirus (HR-HPV) are important, for the development of cervical lesions, but environmental and genetic factors are also related in the process of carcinogenesis. Among the genetic factors, the genetic variants of HR-HPV appear to be related to the risk of persistent infections. Therefore, the present study investigates variants of HPV31 E5 oncogene in cervical scraping samples from Brazilian women to assess their functional and structural effects, in order to identify possible repercussions of these variants on the infectious and carcinogenic process. Our results detected nucleotide changes previously described in the HPV31 E5 oncogene, which may play a critical role in the development of cancer due to its ability to promote cell proliferation and signal transmission. In our study, the interaction percentage of the 31E5 sequence generated by the Immune Epitope Server database and the Analysis Resource (IEDB) allowed us to include possible immunogenic epitopes with the MHC-I and MHC-II molecules, which may represent a possible relationship between protein suppression of the immune system. In the structural analysis of the HPV31 E5 oncoprotein, the N5D, I48 V, P56A, F80I and V64I polymorphisms can be found inserted within transmembrane regions. The P56A mutation has been predicted to be highly stabilizing and, therefore, can cause a change in protein function. Regarding the interaction of the E5 protein from HPV31 with the signaling of NF-kB pathway, we observed that in all variants of the E5 gene from HPV-31, the activity of the NF-kB pathway was increased compared to the prototype. Our study contributes to a more refined design of studies with the E5 gene from HPV31 and provides important data for a better understanding of how variants can be distinguished under their clinical consequences. |
| Databáze: | OpenAIRE |
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