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Inhibition of the PI3K/Akt pathway by Ly294002 does not prevent establishment of persistent Junín virus infection in Vero cells.

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.

journal_name

Arch Virol

journal_title

Archives of virology

authors

Linero FN,Fernández Bell-Fano PM,Cuervo E,Castilla V,Scolaro LA

doi

10.1007/s00705-014-2298-6

subject

Has Abstract

pub_date

2015-02-01 00:00:00

pages

469-75

issue

2

eissn

0304-8608

issn

1432-8798

journal_volume

160

pub_type

杂志文章

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