期刊
CELLULAR MICROBIOLOGY
卷 17, 期 3, 页码 303-317出版社
WILEY-BLACKWELL
DOI: 10.1111/cmi.12375
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资金
- German Federal Ministry of Education and Research [01KI1104]
- Deutsche Forschungsgemeinschaft [EH235 1-2, SFB 1009:B01, GRK1409 TP15]
Bacterial super-infections are a major complication in influenza virus-infected patients. In response to infection with influenza viruses and bacteria, a complex interplay of cellular signalling mechanisms is initiated, regulating the anti-pathogen response but also pathogen-supportive functions. Here, we show that influenza viruses replicate to a higher efficiency in cells co-infected with Staphylococcus aureus (S. aureus). While cells initially respond with increased induction of interferon beta upon super-infection, subsequent interferon signalling and interferon-stimulated gene expression are rather impaired due to a block of STAT1-STAT2 dimerization. Thus, S.aureus interrupts the first line of defence against influenza viruses, resulting in a boost of viral replication, which may lead to enhanced viral pathogenicity.
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