Mirco Schmolke: "La distorsión local y sistémica de la homeostasis de la microbiota causada por la infección por el virus de la gripe A provoca una superinfección bacteriana"

27/09/2018

Aartjan te Velthuis Sir William Dunn School of Pathology, University of Oxford.Department of Pathology, University of Cambridge.Biomedical Sciences Research Complex, University of St Andrews.The Influenza A virus is an infectious agent that usually causes a mild respiratory disease and induces innate immune responses through the activation of RNA sensor RIG-I. However, infections with highly pathogenic influenza viruses such as the H5N1 subtypes or the 1918 H1N1 virus, can lead to an innate immune dysregulation and severe disease. The genome of the virus is replicated and transcribed by the viral RNA-dependent RNA polymerase in the context of viral RNA-nucleoprotein (vRNP) complexes. The RNA polymerase is a complex enzyme that consists of a central core composed of the viral proteins PB1, PB2 and PA, and at least three auxiliary domains involved in viral transcription. Various mutations in the RNA polymerase have been linked to host adaptation and viral virulence, but it is presently unclear what molecular mechanism underlies the link between RNA polymerase differences and viral pathology. Analysis of RNA isolated from transfected cells expressing viral ribonucleoproteins, cells infected with pandemic and avian influenza viruses, and lung tissues of ferrets and mice infected with the 1918 pandemic virus or H5N1 strains shows that short subgenomic viral RNAs of

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Ciencias de la vida y de la materia Centenario de la Gripe Española de 1918

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