Abstract:
:Infection of specific pathogen-free mice with lymphocytic choriomeningitis virus (LCMV) is a widely used model to study antiviral T-cell immunity. Infections in the real world, however, are often accompanied by coinfections with unrelated pathogens. Here we show that in mice, systemic coinfection with E. coli suppresses the LCMV-specific cytotoxic T-lymphocyte (CTL) response and virus elimination in a NK cell- and TLR2/4-dependent manner. Soluble TLR4 ligand LPS also induces NK cell-mediated negative CTL regulation during LCMV infection. NK cells in LPS-treated mice suppress clonal expansion of LCMV-specific CTLs by a NKG2D- or NCR1-independent but perforin-dependent mechanism. These results suggest a TLR4-mediated immunoregulatory role of NK cells during viral-bacterial coinfections.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Straub T,Freudenberg MA,Schleicher U,Bogdan C,Gasteiger G,Pircher Hdoi
10.1038/s41467-018-06609-zsubject
Has Abstractpub_date
2018-10-08 00:00:00pages
4117issue
1issn
2041-1723pii
10.1038/s41467-018-06609-zjournal_volume
9pub_type
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