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A chemokine gene expression signature derived from meta-analysis predicts the pathogenicity of viral respiratory infections.


ABSTRACT: BACKGROUND:During respiratory viral infections host injury occurs due in part to inappropriate host responses. In this study we sought to uncover the host transcriptional responses underlying differences between high- and low-pathogenic infections. RESULTS:From a compendium of 12 studies that included responses to influenza A subtype H5N1, reconstructed 1918 influenza A virus, and SARS coronavirus, we used meta-analysis to derive multiple gene expression signatures. We compared these signatures by their capacity to segregate biological conditions by pathogenicity and predict pathogenicity in a test data set. The highest-performing signature was expressed as a continuum in low-, medium-, and high-pathogenicity samples, suggesting a direct, analog relationship between expression and pathogenicity. This signature comprised 57 genes including a subnetwork of chemokines, implicating dysregulated cell recruitment in injury. CONCLUSIONS:Highly pathogenic viruses elicit expression of many of the same key genes as lower pathogenic viruses but to a higher degree. This increased degree of expression may result in the uncontrolled co-localization of inflammatory cell types and lead to irreversible host damage.

SUBMITTER: Chang ST 

PROVIDER: S-EPMC3297540 | biostudies-literature | 2011 Dec

REPOSITORIES: biostudies-literature

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A chemokine gene expression signature derived from meta-analysis predicts the pathogenicity of viral respiratory infections.

Chang Stewart T ST   Tchitchek Nicolas N   Ghosh Debashis D   Benecke Arndt A   Katze Michael G MG  

BMC systems biology 20111222


<h4>Background</h4>During respiratory viral infections host injury occurs due in part to inappropriate host responses. In this study we sought to uncover the host transcriptional responses underlying differences between high- and low-pathogenic infections.<h4>Results</h4>From a compendium of 12 studies that included responses to influenza A subtype H5N1, reconstructed 1918 influenza A virus, and SARS coronavirus, we used meta-analysis to derive multiple gene expression signatures. We compared th  ...[more]

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