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  • 1
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    Cell activation and apoptosis by bacterial lipoproteins through toll-like receptor-2 (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-07-31
    Description: Apoptosis is implicated in the generation and resolution of inflammation in response to bacterial pathogens. All bacterial pathogens produce lipoproteins (BLPs), which trigger the innate immune response. BLPs were found to induce apoptosis in THP-1 monocytic cells through human Toll-like receptor-2 (hTLR2). BLPs also initiated apoptosis in an epithelial cell line transfected with hTLR2. In addition, BLPs stimulated nuclear factor-kappaB, a transcriptional activator of multiple host defense genes, and activated the respiratory burst through hTLR2. Thus, hTLR2 is a molecular link between microbial products, apoptosis, and host defense mechanisms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aliprantis, A O -- Yang, R B -- Mark, M R -- Suggett, S -- Devaux, B -- Radolf, J D -- Klimpel, G R -- Godowski, P -- Zychlinsky, A -- AI 37720-04/AI/NIAID NIH HHS/ -- AI-38894/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1999 Jul 30;285(5428):736-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Skirball Institute and Department of Microbiology, New York University School of Medicine, 540 First Avenue, New York, NY 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10426996" target="_blank"〉PubMed〈/a〉
    Keywords: Antibodies, Monoclonal ; Antigens, CD14/analysis ; *Apoptosis ; Bacterial Proteins/metabolism/*pharmacology ; Cell Line/metabolism ; Cycloheximide/pharmacology ; Cytotoxicity, Immunologic ; *Drosophila Proteins ; Genes, Reporter ; Humans ; Lipopolysaccharides/immunology ; Lipoproteins/metabolism/*pharmacology ; Membrane Glycoproteins/immunology/*metabolism ; Monocytes/*cytology/immunology/metabolism ; NF-kappa B/metabolism ; Protein Synthesis Inhibitors/pharmacology ; Reactive Oxygen Species/metabolism ; Receptors, Cell Surface/immunology/*metabolism ; Signal Transduction ; Tetradecanoylphorbol Acetate/pharmacology ; Toll-Like Receptor 2 ; Toll-Like Receptors ; Transfection ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Host defense mechanisms triggered by microbial lipoproteins through toll-like receptors (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-07-31
    Description: The generation of cell-mediated immunity against many infectious pathogens involves the production of interleukin-12 (IL-12), a key signal of the innate immune system. Yet, for many pathogens, the molecules that induce IL-12 production by macrophages and the mechanisms by which they do so remain undefined. Here it is shown that microbial lipoproteins are potent stimulators of IL-12 production by human macrophages, and that induction is mediated by Toll-like receptors (TLRs). Several lipoproteins stimulated TLR-dependent transcription of inducible nitric oxide synthase and the production of nitric oxide, a powerful microbicidal pathway. Activation of TLRs by microbial lipoproteins may initiate innate defense mechanisms against infectious pathogens.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brightbill, H D -- Libraty, D H -- Krutzik, S R -- Yang, R B -- Belisle, J T -- Bleharski, J R -- Maitland, M -- Norgard, M V -- Plevy, S E -- Smale, S T -- Brennan, P J -- Bloom, B R -- Godowski, P J -- Modlin, R L -- New York, N.Y. -- Science. 1999 Jul 30;285(5428):732-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Howard Hughes Medical Institute, University of California Los Angeles School of Medicine, Los Anges, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10426995" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Bacterial/chemistry/*immunology/metabolism ; Cell Line ; *Drosophila Proteins ; Gene Expression Regulation ; Humans ; Interleukin-12/*biosynthesis/genetics ; Lipopolysaccharides/immunology ; Lipoproteins/chemistry/*immunology/metabolism ; Macrophages/*immunology/metabolism ; Membrane Glycoproteins/*metabolism ; Mice ; Monocytes/*immunology/metabolism ; Mycobacterium tuberculosis/*immunology ; NF-kappa B/biosynthesis ; Nitric Oxide Synthase/genetics ; Nitric Oxide Synthase Type II ; Promoter Regions, Genetic ; Receptors, Cell Surface/*metabolism ; Signal Transduction ; Toll-Like Receptors ; Transcription, Genetic ; Transfection ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
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