Title |
Activation of a G protein–coupled receptor by its endogenous ligand triggers the innate immune response of Caenorhabditis elegans
|
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Published in |
Nature Immunology, August 2014
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DOI | 10.1038/ni.2957 |
Pubmed ID | |
Authors |
Olivier Zugasti, Neelanjan Bose, Barbara Squiban, Jérôme Belougne, C Léopold Kurz, Frank C Schroeder, Nathalie Pujol, Jonathan J Ewbank |
Abstract |
Immune defenses are triggered by microbe-associated molecular patterns or as a result of damage to host cells. The elicitors of immune responses in the nematode Caenorhabditis elegans are unclear. Using a genome-wide RNA-mediated interference (RNAi) screen, we identified the G protein-coupled receptor (GPCR) DCAR-1 as being required for the response to fungal infection and wounding. DCAR-1 acted in the epidermis to regulate the expression of antimicrobial peptides via a conserved p38 mitogen-activated protein kinase pathway. Through targeted metabolomics analysis we identified the tyrosine derivative 4-hydroxyphenyllactic acid (HPLA) as an endogenous ligand. Our findings reveal DCAR-1 and its cognate ligand HPLA to be triggers of the epidermal innate immune response in C. elegans and highlight the ancient role of GPCRs in host defense. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United States | 1 | 100% |
Demographic breakdown
Type | Count | As % |
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Scientists | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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United Kingdom | 2 | 2% |
Japan | 1 | <1% |
United States | 1 | <1% |
France | 1 | <1% |
Unknown | 104 | 95% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 27 | 25% |
Researcher | 17 | 16% |
Student > Master | 13 | 12% |
Professor > Associate Professor | 9 | 8% |
Student > Bachelor | 7 | 6% |
Other | 20 | 18% |
Unknown | 16 | 15% |
Readers by discipline | Count | As % |
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Agricultural and Biological Sciences | 44 | 40% |
Biochemistry, Genetics and Molecular Biology | 21 | 19% |
Immunology and Microbiology | 12 | 11% |
Medicine and Dentistry | 4 | 4% |
Chemistry | 3 | 3% |
Other | 6 | 6% |
Unknown | 19 | 17% |