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Abstract:

In previous work, we demonstrated that the arenavirus Junín virus (JUNV) is able to activate Akt by means of the phosphatidylinositol-3-kinase (PI3K) survival pathway during virus entry. This work extends our study, emphasizing the relevance of this pathway in the establishment and maintenance of persistent infection in vitro. During the course of infection, JUNV-infected Vero cells showed a typical cytopathic effect that may be ascribed to apoptotic cell death. Treatment of infected cultures with Ly294002, an inhibitor of the PI3K/Akt pathway, produced an apoptotic response similar to that observed for uninfected cells treated with the drug. This result suggests that virus-induced activation of the PI3K/Akt pathway does not deliver a strong enough anti-apoptotic signal to explain the low proportion of apoptotic cells observed during infection. Also, inhibition of the PI3K/Akt pathway during the acute stage of infection did not prevent the establishment of persistence. Furthermore, treatment of persistently JUNV-infected cells with Ly294002 did not alter viral protein expression. These findings indicate that despite the positive modulation of the PI3/Akt pathway during Junín virus entry, this would not play a critical role in the establishment and maintenance of JUNV persistence in Vero cells. © 2014, Springer-Verlag Wien.

Registro:

Documento: Artículo
Título:Inhibition of the PI3K/Akt pathway by Ly294002 does not prevent establishment of persistent Junín virus infection in Vero cells
Autor:Linero, F.N.; Fernández Bell-Fano, P.M.; Cuervo, E.; Castilla, V.; Scolaro, L.A.
Filiación:Laboratorio de Virología, Dpto. Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Palabras clave:Junín virus; LY294002; Persistence; PI3K/AKT; 2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-one; chromone derivative; enzyme inhibitor; morpholine derivative; phosphatidylinositol 3 kinase; protein kinase B; virus protein; animal; antagonists and inhibitors; apoptosis; biosynthesis; cell line; Chlorocebus aethiops; drug effects; growth, development and aging; Hemorrhagic Fever, American; Junin virus; physiology; Vero cell line; virology; virus entry; virus replication; Animals; Apoptosis; Cell Line; Cercopithecus aethiops; Chromones; Enzyme Inhibitors; Hemorrhagic Fever, American; Junin virus; Morpholines; Phosphatidylinositol 3-Kinases; Proto-Oncogene Proteins c-akt; Vero Cells; Viral Proteins; Virus Internalization; Virus Replication
Año:2014
Volumen:160
Número:2
Página de inicio:469
Página de fin:475
DOI: http://dx.doi.org/10.1007/s00705-014-2298-6
Título revista:Archives of Virology
Título revista abreviado:Arch. Virol.
ISSN:03048608
CODEN:ARVID
CAS:phosphatidylinositol 3 kinase, 115926-52-8; protein kinase B, 148640-14-6; 2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-one; Chromones; Enzyme Inhibitors; Morpholines; Phosphatidylinositol 3-Kinases; Proto-Oncogene Proteins c-akt; Viral Proteins
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03048608_v160_n2_p469_Linero

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Citas:

---------- APA ----------
Linero, F.N., Fernández Bell-Fano, P.M., Cuervo, E., Castilla, V. & Scolaro, L.A. (2014) . Inhibition of the PI3K/Akt pathway by Ly294002 does not prevent establishment of persistent Junín virus infection in Vero cells. Archives of Virology, 160(2), 469-475.
http://dx.doi.org/10.1007/s00705-014-2298-6
---------- CHICAGO ----------
Linero, F.N., Fernández Bell-Fano, P.M., Cuervo, E., Castilla, V., Scolaro, L.A. "Inhibition of the PI3K/Akt pathway by Ly294002 does not prevent establishment of persistent Junín virus infection in Vero cells" . Archives of Virology 160, no. 2 (2014) : 469-475.
http://dx.doi.org/10.1007/s00705-014-2298-6
---------- MLA ----------
Linero, F.N., Fernández Bell-Fano, P.M., Cuervo, E., Castilla, V., Scolaro, L.A. "Inhibition of the PI3K/Akt pathway by Ly294002 does not prevent establishment of persistent Junín virus infection in Vero cells" . Archives of Virology, vol. 160, no. 2, 2014, pp. 469-475.
http://dx.doi.org/10.1007/s00705-014-2298-6
---------- VANCOUVER ----------
Linero, F.N., Fernández Bell-Fano, P.M., Cuervo, E., Castilla, V., Scolaro, L.A. Inhibition of the PI3K/Akt pathway by Ly294002 does not prevent establishment of persistent Junín virus infection in Vero cells. Arch. Virol. 2014;160(2):469-475.
http://dx.doi.org/10.1007/s00705-014-2298-6