Identification of erythroid cell positive blood transcriptome phenotypes associated with severe respiratory syncytial virus infection
Rinchai, D.; Altman, M. B.; Konza, O.; Hassler, S.; Martina, F.; Toufiq, M.; Garand, M.; Kabeer, B.; Palucka, K.; Mejias, A.; Ramilo, O.; Bedognetti, D.; Mariotti-Ferrandiz, E.; Klatzmann, D.; Chaussabel, D.
Show abstract
Biomarkers to assess the severity of acute respiratory syncytial virus (RSV) infection are needed. We conducted a meta-analysis of 490 unique profiles from six public RSV blood transcriptome datasets. A repertoire of 382 well-characterized transcriptional modules was used to define dominant host responses to RSV infection. The consolidated RSV cohort was stratified according to four traits: "interferon response" (IFN), "neutrophil-driven inflammation" (Infl), "cell cycle" (CC), and "erythrocytes" (Ery). Eight prevalent blood transcriptome phenotypes were thus identified. Among those three Ery+ phenotypes comprised higher proportions of patients requiring intensive care. We posit that the erythrocyte module is linked to an overabundance of immunosuppressive erythroid cells that might underlie progression to severe RSV infection. These findings outline potential priority areas for biomarker development and investigations into the immune biology of RSV infection. The approach that was employed here will also permit to delineate prevalent blood transcriptome phenotypes in other settings.
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