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A role for the human nucleotide-binding domain, leucine-rich repeat-containing family member NLRC5 in antiviral responses.
J. Biol. Chem. 285, 26223-26232 (2010)
Proteins of the nucleotide-binding domain, leucine-rich repeat (NLR)-containing family recently gained attention as important components of the innate immune system. Although over 20 of these proteins are present in humans, only a few members including the cytosolic pattern recognition receptors NOD1, NOD2, and NLRP3 have been analyzed extensively. These NLRs were shown to be pivotal for mounting innate immune response toward microbial invasion. Here we report on the characterization of human NLRC5 and provide evidence that this NLR has a function in innate immune responses. We found that NLRC5 is a cytosolic protein expressed predominantly in hematopoetic cells. NLRC5 mRNA and protein expression was inducible by the double-stranded RNA analog poly(I.C) and Sendai virus. Overexpression of NLRC5 failed to trigger inflammatory responses such as the NF-kappaB or interferon pathways in HEK293T cells. However, knockdown of endogenous NLRC5 reduced Sendai virus- and poly(I.C)-mediated type I interferon pathway-dependent responses in THP-1 cells and human primary dermal fibroblasts. Taken together, this defines a function for NLRC5 in anti-viral innate immune responses.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
NF-Kappa-B; Double-Stranded-RNA; Pattern-recognition; Signaling pathways; Immune-responses; Epithelial-cells; Viral-infection; Innate immunity; Activation; Gene
ISSN (print) / ISBN
0021-9258
e-ISSN
1083-351X
Zeitschrift
Journal of Biological Chemistry, The
Quellenangaben
Band: 285,
Heft: 34,
Seiten: 26223-26232
Verlag
American Society for Biochemistry and Molecular Biology
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Molecular Immunology (IMI)