To understand the interaction between the virus and its host, we used three sources of cDNA microarrays to examine the expression of 12,309 unique genes at 6 h postinfection of HeLa cells with high multiplicities of @entity9504 . Seventy-six genes with significantly changed expression ratios were identified, suggesting that adenovirus only modulates expression of a limited set of cellular genes. Quantitative real-time PCR analyses on selected genes were performed to confirm the microarray results. Significantly, a pronounced transcriptional activation by the promiscuous E1A-289R transcriptional activator was not apparent. Instead, promoter sequences in 45% of the upregulated genes harbored a potential E2F binding site, suggesting that the ability of the @entity1472 -terminal domain of E1A to regulate E2F-dependent transcription may be a major pathway for regulation of cellular gene expression. @entity10837 was the only upregulated gene directly involved in cell cycle control. In contrast, several genes implicated in cell growth arrest were repressed. The transforming growth factor beta superfamily was specifically affected in the expression of both the upstream ligand and an intracellular regulator. In agreement with previous reports, adenovirus also targeted the innate immune response by downregulating several cytokines, including CLL2, @entity2851 , and @entity650 . Finally, stress response genes encoding @entity25008 , @entity23638 , and @entity69210 were upregulated. Importantly, we also found a novel countermeasure-activation of the apoptosis inhibitor survivin.

Strategic attack on host cell gene expression during XXXX .

@entity650 :: ('3569', 'Gene') :: ['interleukin-6'] @entity9504 :: ('MESH:D000257', 'Disease') :: ['adenovirus type 2'] @entity1472 :: ('CHEBI:46882', 'Chemical') :: ['amino'] @entity69210 :: ('11257', 'Gene') :: ['TP53AP1'] @entity25008 :: ('4616', 'Gene') :: ['GADD45B'] @entity2851 :: ('2919', 'Gene') :: ['CXCL1'] @entity23638 :: ('467', 'Gene') :: ['ATF3'] @entity10837 :: ('993', 'Gene') :: ['CDC25A']
@entity9504 :: (MESH:D000257,Disease) :: ['adenovirus infection']
