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The role of Epstein-Barr virus in epithelial malignancies.
- Source :
-
The Journal of pathology [J Pathol] 2015 Jan; Vol. 235 (2), pp. 323-33. - Publication Year :
- 2015
-
Abstract
- The close association of Epstein-Barr virus (EBV) infection with non-keratinizing nasopharyngeal carcinomas and a subset of gastric carcinomas suggests that EBV infection is a crucial event in these cancers. The difficulties encountered in infecting and transforming primary epithelial cells in experimental systems suggest that the role of EBV in epithelial malignancies is complex and multifactorial in nature. Genetic alterations in the premalignant epithelium may support the establishment of latent EBV infection, which is believed to be an initiation event. Oncogenic properties have been reported in multiple EBV latent genes. The BamH1 A rightwards transcripts (BARTs) and the BART-encoded microRNAs (miR-BARTs) are highly expressed in EBV-associated epithelial malignancies and may induce malignant transformation. However, enhanced proliferation may not be the crucial function of EBV infection in epithelial malignancies, at least in the early stages of cancer development. EBV-encoded gene products may confer anti-apoptotic properties and promote the survival of infected premalignant epithelial cells harbouring genetic alterations. Multiple EBV-encoded microRNAs have been reported to have immune evasion functions. Genetic alterations in host cells, as well as inflammatory stroma, could modulate the expression of EBV genes and alter the growth properties of infected premalignant epithelial cells, encouraging their selection during carcinogenesis.<br /> (© 2014 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of Pathological Society of Great Britain and Ireland.)
- Subjects :
- Animals
Biopsy
Epstein-Barr Virus Infections complications
Epstein-Barr Virus Infections immunology
Epstein-Barr Virus Infections pathology
Genotype
Herpesvirus 4, Human genetics
Herpesvirus 4, Human immunology
Host-Pathogen Interactions
Humans
Neoplasms, Glandular and Epithelial immunology
Neoplasms, Glandular and Epithelial pathology
Pathology, Molecular methods
Predictive Value of Tests
Prognosis
Risk Factors
Virology methods
Virulence
Virus Activation
Virus Latency
Epstein-Barr Virus Infections virology
Herpesvirus 4, Human pathogenicity
Neoplasms, Glandular and Epithelial virology
Subjects
Details
- Language :
- English
- ISSN :
- 1096-9896
- Volume :
- 235
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- The Journal of pathology
- Publication Type :
- Academic Journal
- Accession number :
- 25251730
- Full Text :
- https://doi.org/10.1002/path.4448