PMID- 20133860 OWN - NLM STAT- MEDLINE DCOM- 20100305 LR - 20211020 IS - 1091-6490 (Electronic) IS - 0027-8424 (Print) IS - 0027-8424 (Linking) VI - 107 IP - 5 DP - 2010 Feb 2 TI - bZIP transcription factor zip-2 mediates an early response to Pseudomonas aeruginosa infection in Caenorhabditis elegans. PG - 2153-8 LID - 10.1073/pnas.0914643107 [doi] AB - Very little is known about how animals discriminate pathogens from innocuous microbes. To address this question, we examined infection-response gene induction in the nematode Caenorhabditis elegans. We focused on genes that are induced in C. elegans by infection with the bacterial pathogen Pseudomonas aeruginosa, but are not induced by an isogenic attenuated gacA mutant. Most of these genes are induced independently of known immunity pathways. We generated a GFP reporter for one of these genes, infection response gene 1 (irg-1), which is induced strongly by wild-type P. aeruginosa strain PA14, but not by other C. elegans pathogens or by other wild-type P. aeruginosa strains that are weakly pathogenic to C. elegans. To identify components of the pathway that induces irg-1 in response to infection, we performed an RNA interference screen of C. elegans transcription factors. This screen identified zip-2, a bZIP transcription factor that is required for inducing irg-1, as well as several other genes, and is important for defense against infection by P. aeruginosa. These data indicate that zip-2 is part of a specialized pathogen response pathway that is induced by virulent strains of P. aeruginosa and provides defense against this pathogen. FAU - Estes, Kathleen A AU - Estes KA AD - Division of Biological Sciences, University of California, San Diego, CA 92093, USA. FAU - Dunbar, Tiffany L AU - Dunbar TL FAU - Powell, Jennifer R AU - Powell JR FAU - Ausubel, Frederick M AU - Ausubel FM FAU - Troemel, Emily R AU - Troemel ER LA - eng GR - P30 DK040561/DK/NIDDK NIH HHS/United States GR - P01 AI044220/AI/NIAID NIH HHS/United States GR - P30 DK040561-14/DK/NIDDK NIH HHS/United States GR - R01 AI064332/AI/NIAID NIH HHS/United States GR - R01 AI087528/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20100121 PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 RN - 0 (Basic-Leucine Zipper Transcription Factors) RN - 0 (Caenorhabditis elegans Proteins) SB - IM MH - Animals MH - Animals, Genetically Modified MH - Basic-Leucine Zipper Transcription Factors/antagonists & inhibitors/genetics/*immunology MH - Caenorhabditis elegans/genetics/*immunology/*microbiology/physiology MH - Caenorhabditis elegans Proteins/antagonists & inhibitors/genetics/*immunology MH - Gene Expression MH - Genes, Helminth MH - MAP Kinase Signaling System MH - Models, Immunological MH - Pseudomonas aeruginosa/*pathogenicity MH - RNA Interference MH - Staphylococcus aureus/pathogenicity MH - Virulence PMC - PMC2836710 COIS- The authors declare no conflict of interest. EDAT- 2010/02/06 06:00 MHDA- 2010/03/06 06:00 PMCR- 2010/08/02 CRDT- 2010/02/06 06:00 PHST- 2010/02/06 06:00 [entrez] PHST- 2010/02/06 06:00 [pubmed] PHST- 2010/03/06 06:00 [medline] PHST- 2010/08/02 00:00 [pmc-release] AID - 0914643107 [pii] AID - 200914643 [pii] AID - 10.1073/pnas.0914643107 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 2010 Feb 2;107(5):2153-8. doi: 10.1073/pnas.0914643107. Epub 2010 Jan 21.