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Novel Patterns of the Epstein-Barr Nuclear Antigen (EBNA-1) V-Val Subtype in EBV-associated Nasopharyngeal Carcinoma from Vietnam

The Epstein-Barr nuclear antigen 1 (EBNA-1) gene, plays a key role in viral infection, immortalization, viral genome replication, transcription and maintenance, and is the frequently detected gene, protein in both latent and lytic stage of Epstein-Barr virus (EBV). Based on the amino acid at positio...

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Autores principales: Thuan, LD, Kha, ND, Minh, NT, Thuy, LHA
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Sciendo 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6714338/
https://www.ncbi.nlm.nih.gov/pubmed/31523622
http://dx.doi.org/10.2478/bjmg-2019-0011
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author Thuan, LD
Kha, ND
Minh, NT
Thuy, LHA
author_facet Thuan, LD
Kha, ND
Minh, NT
Thuy, LHA
author_sort Thuan, LD
collection PubMed
description The Epstein-Barr nuclear antigen 1 (EBNA-1) gene, plays a key role in viral infection, immortalization, viral genome replication, transcription and maintenance, and is the frequently detected gene, protein in both latent and lytic stage of Epstein-Barr virus (EBV). Based on the amino acid at position 487, EBNA-1 was classified into five subtypes, including P-Ala, P-Thr, V-Val, V-Pro and V-Leu. In Vietnam, an Asian country with a high incidence, mortality rates of nasopharyngeal carcinoma (NPC), had limited research on the EBNA-1 variation. Therefore, the aim of the current study was to identify the pattern of the EBNA-1 V-Val subtype in Vietnamese NPC patients, for its value further applied in NPC patients. Fifty-eight NPC biopsy samples were collected from local patients, analyzed by nested-polymerase chain reaction (nested-PCR), sequencing and compared to a previous B95-8 prototype sequence. Four EBNA-1 subtypes, including V-Val (35/44, 79.55%), P-Ala (2/44, 4.55%), P-Thr (5/44, 11.36%), and V-Leu (2/44, 4.55%), were observed in 44/58 samples. The sequences of the V-Val subtype were compared to the B95-8 prototype, resulting in five patterns, contained seven consensus changes, including five amino acid changes at positions 487, 499, 502, 524, 594, and two silent changes at residues 520 and 553. Of these, four of five, patterns were identified as novel patterns of the V-Val subtype, showing the different changes of amino acids at positions 492, 528, 529, 553, 585 and 588, by comparison with previous studies of V-Val EBNA-1. Those data suggested the profile of variation patterns of the EBNA-1 gene, related to geographic distribution, in Vietnamese NPC patients.
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spelling pubmed-67143382019-09-13 Novel Patterns of the Epstein-Barr Nuclear Antigen (EBNA-1) V-Val Subtype in EBV-associated Nasopharyngeal Carcinoma from Vietnam Thuan, LD Kha, ND Minh, NT Thuy, LHA Balkan J Med Genet Original Article The Epstein-Barr nuclear antigen 1 (EBNA-1) gene, plays a key role in viral infection, immortalization, viral genome replication, transcription and maintenance, and is the frequently detected gene, protein in both latent and lytic stage of Epstein-Barr virus (EBV). Based on the amino acid at position 487, EBNA-1 was classified into five subtypes, including P-Ala, P-Thr, V-Val, V-Pro and V-Leu. In Vietnam, an Asian country with a high incidence, mortality rates of nasopharyngeal carcinoma (NPC), had limited research on the EBNA-1 variation. Therefore, the aim of the current study was to identify the pattern of the EBNA-1 V-Val subtype in Vietnamese NPC patients, for its value further applied in NPC patients. Fifty-eight NPC biopsy samples were collected from local patients, analyzed by nested-polymerase chain reaction (nested-PCR), sequencing and compared to a previous B95-8 prototype sequence. Four EBNA-1 subtypes, including V-Val (35/44, 79.55%), P-Ala (2/44, 4.55%), P-Thr (5/44, 11.36%), and V-Leu (2/44, 4.55%), were observed in 44/58 samples. The sequences of the V-Val subtype were compared to the B95-8 prototype, resulting in five patterns, contained seven consensus changes, including five amino acid changes at positions 487, 499, 502, 524, 594, and two silent changes at residues 520 and 553. Of these, four of five, patterns were identified as novel patterns of the V-Val subtype, showing the different changes of amino acids at positions 492, 528, 529, 553, 585 and 588, by comparison with previous studies of V-Val EBNA-1. Those data suggested the profile of variation patterns of the EBNA-1 gene, related to geographic distribution, in Vietnamese NPC patients. Sciendo 2019-08-28 /pmc/articles/PMC6714338/ /pubmed/31523622 http://dx.doi.org/10.2478/bjmg-2019-0011 Text en © 2019 Thuan LD, Kha ND, Minh NT, Thuy LHA, published by Sciendo http://creativecommons.org/licenses/by-nc-nd/3.0 This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
spellingShingle Original Article
Thuan, LD
Kha, ND
Minh, NT
Thuy, LHA
Novel Patterns of the Epstein-Barr Nuclear Antigen (EBNA-1) V-Val Subtype in EBV-associated Nasopharyngeal Carcinoma from Vietnam
title Novel Patterns of the Epstein-Barr Nuclear Antigen (EBNA-1) V-Val Subtype in EBV-associated Nasopharyngeal Carcinoma from Vietnam
title_full Novel Patterns of the Epstein-Barr Nuclear Antigen (EBNA-1) V-Val Subtype in EBV-associated Nasopharyngeal Carcinoma from Vietnam
title_fullStr Novel Patterns of the Epstein-Barr Nuclear Antigen (EBNA-1) V-Val Subtype in EBV-associated Nasopharyngeal Carcinoma from Vietnam
title_full_unstemmed Novel Patterns of the Epstein-Barr Nuclear Antigen (EBNA-1) V-Val Subtype in EBV-associated Nasopharyngeal Carcinoma from Vietnam
title_short Novel Patterns of the Epstein-Barr Nuclear Antigen (EBNA-1) V-Val Subtype in EBV-associated Nasopharyngeal Carcinoma from Vietnam
title_sort novel patterns of the epstein-barr nuclear antigen (ebna-1) v-val subtype in ebv-associated nasopharyngeal carcinoma from vietnam
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6714338/
https://www.ncbi.nlm.nih.gov/pubmed/31523622
http://dx.doi.org/10.2478/bjmg-2019-0011
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