| Iap2 is required for a sustained response in the Drosophila Imd pathway. | |
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MedLine Citation:
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PMID: 17343912 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Fruit flies have effective immune response against Gram-negative bacteria. Upon infection, early JNK-signaling pathway mediated response is followed by the action of the Immune deficiency (Imd) signaling cascade, a Drosophila equivalent of mammalian TNF-receptor pathway, leading to the release of antimicrobial peptides. Recently, Tak1-binding protein 2 (Tab2) and Inhibitor of apoptosis 2 (Iap2) were identified as components of the Imd pathway. In this study, we carried out a genome-wide kinetic analysis of the role of Tab2 and Iap2 for immune response in Drosophila S2 cells using oligonucleotide microarrays. Tab2 RNAi abolished the induction of all immune response genes in S2 cells indicating its requirement for signaling both via the Imd and the JNK pathway. The role of Iap2 was more specific. Kinetic analysis indicated that Iap2 is required to sustain antimicrobial peptide gene expression in S2 cells. Furthermore, inactivation of Iap2 by RNAi resulted in impaired microbial resistance in Drosophila in vivo. |
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Authors:
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Susanna Valanne; Anni Kleino; Henna Myllymäki; Jussi Vuoristo; Mika Rämet |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2007-02-15 |
Journal Detail:
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Title: Developmental and comparative immunology Volume: 31 ISSN: 0145-305X ISO Abbreviation: Dev. Comp. Immunol. Publication Date: 2007 |
Date Detail:
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Created Date: 2007-07-30 Completed Date: 2007-10-10 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 7708205 Medline TA: Dev Comp Immunol Country: United States |
Other Details:
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Languages: eng Pagination: 991-1001 Citation Subset: IM |
Affiliation:
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Institute of Medical Technology, 33014 University of Tampere, and Department of Pediatrics, Tampere University Hospital, Finland. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Antimicrobial Cationic Peptides / biosynthesis, genetics Cell Line Drosophila Proteins / genetics, physiology* Drosophila melanogaster / genetics, immunology* Immunity, Innate / genetics Inhibitor of Apoptosis Proteins / genetics, physiology* Microbial Sensitivity Tests Signal Transduction / genetics, immunology* |
| Chemical | |
Reg. No./Substance:
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0/Antimicrobial Cationic Peptides; 0/DIAP2 protein, Drosophila; 0/Drosophila Proteins; 0/Inhibitor of Apoptosis Proteins; 0/immune deficiency protein, Drosophila |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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