Journal
JOURNAL OF EXPERIMENTAL MEDICINE
Volume 209, Issue 11, Pages 1969-1983Publisher
ROCKEFELLER UNIV PRESS
DOI: 10.1084/jem.20121960
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Funding
- National Institute of Allergy and Infectious Disease [AI084914, 5U54AI057141-08]
- European Union (FP7/2007-2013) [241779]
- Howard Hughes Medical Institute
- Rita Allen Foundation
- Lupus Research Institute
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Innate immune detection of nucleic acids is important for initiation of antiviral responses. Detection of intracellular DNA activates STING-dependent type I interferons (IFNs) and the ASC-dependent inflammasome. Certain members of the AIM2-like receptor (ALR) gene family contribute to each of these pathways, but most ALRs remain uncharacterized. Here, we identify five novel murine ALRs and perform a phylogenetic analysis of mammalian ALRs, revealing a remarkable diversification of these receptors among mammals. We characterize the expression, localization, and functions of the murine and human ALRs and identify novel activators of STING-dependent IFNs and the ASC-dependent inflammasome. These findings validate ALRs as key activators of the antiviral response and provide an evolutionary and functional framework for understanding their roles in innate immunity.
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