期刊
INNATE IMMUNITY
卷 19, 期 4, 页码 438-448出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1753425912467383
关键词
Nod-like receptors; RIG-I like receptors; MAVS; innate immunity; NLRX1
资金
- Canadian Institutes of Health Research (CIHR)
- Burroughs Wellcome Fund
- CIHR
NLRX1 is a member of the Nod-like receptor family of intracellular sensors of microbial- and danger-associated molecular patterns. NLRX1 has a N-terminal mitochondrial addressing sequence that localizes the protein to the mitochondrial matrix. Recently, conflicting reports have been presented with regard to the putative implication of NLRX1 as a negative regulator of MAVS-dependent cytosolic antiviral responses. Here, we generated a new NLRX1 knockout mouse strain and observed that bone marrow-derived macrophages and murine embryonic fibroblasts from NLRX1-deficient mice displayed normal antiviral and inflammatory responses following Sendai virus infection. Importantly, wild type and NLRX1-deficient mice exhibited unaltered antiviral and inflammatory gene expression following intranasal challenge with influenza A virus or i.p. injection of Poly (I:C). Together, our results demonstrate that NLRX1 does not participate in the negative regulation of MAVS-dependent antiviral responses.
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