Por favor, use este identificador para citar o enlazar este ítem: https://doi.org/10.14670/HH-30.559

Título: Lymphoid hyperplasia and lymphoma in KSHV K1 transgenic mice
Fecha de publicación: 2015
Editorial: F. Hernández y Juan F. Madrid. Universidad de Murcia: Departamento de Biología Celular e Histología
Cita bibliográfica: Histology and Histopathology, Vol. 30, n.º 5 (2015)
ISSN: 1699-5848
Materias relacionadas: CDU::5 - Ciencias puras y naturales::57 - Biología::576 - Biología celular y subcelular. Citología
Palabras clave: KSHV K1
Fas receptor
Resumen: Growing evidence supports the involvement of human herpervirus 8, Kaposi’s sarcoma associated herpesvirus (KSHV), in the pathology of primary effusion lymphoma, multicentric Castleman’s disease, and Kaposi’s sarcoma, but the exact mechanism of KSHV contribution to the oncogenic process remains elusive. We studied transgenic mice expressing the ORF K1 of KSHV, whose position in the KSHV genome corresponds to known lymphoproliferative genes of other herpesviruses. K1 protein was previously shown to contain a constitutively active ITAM domain, involved in activation of Akt and pro-survival signaling, and to inhibit Fas-mediated apoptosis by interfering with binding of FasL. All this pointed to a possible role of K1 in the pathogenesis of KSHV-associated cancers. K1 transgenic mice (80-90%) developed lymphoid hyperplasia and splenomegaly at 8 and 10 months of age, 25% had confirmed diagnosis of lymphoma, and 50% developed abdominal and/or hepatic tumors by 18 months of age. Histological examination showed loss of splenic architecture and increased cellularity. Lymph nodes showed disrupted architecture with effaced follicles and other pathological changes, including signs of angiofollicular lymphoid hyperplasia. One of the livers showed signs of angiosarcoma. In summary, our histology results revealed pathological changes in K1 transgenic mice similar to lymphoma, Castleman’s disease, and angiosarcoma, suggesting that K1 may contribute to the development of KSHV-associated cancers.
Autor/es principal/es: Berkova, Zuzana
Wang, Shu
Sehgal, Lalit
Pate, Keyur Pravinchandra
Prakash, Om
Samaniego, Felipe
URI: http://hdl.handle.net/10201/90195
DOI: https://doi.org/10.14670/HH-30.559
Tipo de documento: info:eu-repo/semantics/article
Número páginas / Extensión: 10
Derechos: info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 International
Aparece en las colecciones:Vol.30, nº5 (2015)

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