Increased ATP generation in the host cell is required for efficient vaccinia virus production.

Abstract:

:To search for cellular genes up-regulated by vaccinia virus (VV) infection, differential display-reverse transcription-polymerase chain reaction (ddRT-PCR) assays were used to examine the expression of mRNAs from mock-infected and VV-infected HeLa cells. Two mitochondrial genes for proteins that are part of the electron transport chain that generates ATP, ND4 and CO II, were up-regulated after VV infection. Up-regulation of ND4 level by VV infection was confirmed by Western blotting analysis. Up-regulation of ND4 was reduced by the MAPK inhibitor, apigenin, which has been demonstrated elsewhere to inhibit VV replication. The induction of ND4 expression occurred after viral DNA replication since ara C, an inhibitor of poxviral DNA replication, could block this induction. ATP production was increased in the host cells after VV infection. Moreover, 4.5 microM oligomycin, an inhibitor of ATP production, reduced the ATP level 13 hr after virus infection to that of mock-infected cells and inhibited viral protein expression and virus production, suggesting that increased ATP production is required for efficient VV production. Our results further suggest that induction of ND4 expression is through a Bcl-2 independent pathway.

journal_name

J Biomed Sci

authors

Chang CW,Li HC,Hsu CF,Chang CY,Lo SY

doi

10.1186/1423-0127-16-80

subject

Has Abstract

pub_date

2009-09-02 00:00:00

pages

80

eissn

1021-7770

issn

1423-0127

pii

1423-0127-16-80

journal_volume

16

pub_type

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