Persistent KSHV Infection Increases EBV-Associated Tumor Formation In Vivo via Enhanced EBV Lytic Gene Expression.
Cell Host Microbe
; 22(1): 61-73.e7, 2017 Jul 12.
Article
em En
| MEDLINE
| ID: mdl-28704654
ABSTRACT
The human tumor viruses Epstein-Barr virus (EBV) and Kaposi sarcoma-associated herpesvirus (KSHV) establish persistent infections in B cells. KSHV is linked to primary effusion lymphoma (PEL), and 90% of PELs also contain EBV. Studies on persistent KSHV infection in vivo and the role of EBV co-infection in PEL development have been hampered by the absence of small animal models. We developed mice reconstituted with human immune system components as a model for KSHV infection and find that EBV/KSHV dual infection enhanced KSHV persistence and tumorigenesis. Dual-infected cells displayed a plasma cell-like gene expression pattern similar to PELs. KSHV persisted in EBV-transformed B cells and was associated with lytic EBV gene expression, resulting in increased tumor formation. Evidence of elevated lytic EBV replication was also found in EBV/KSHV dually infected lymphoproliferative disorders in humans. Our data suggest that KSHV augments EBV-associated tumorigenesis via stimulation of lytic EBV replication.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Regulação Viral da Expressão Gênica
/
Herpesvirus Humano 4
/
Herpesvirus Humano 8
/
Coinfecção
/
Neoplasias
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Suíça