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Lipopolysaccharide-induced gelatinase granule mobilization primes neutrophils for activation by galectin-3 and formylmethionyl-Leu-Phe.
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- Almkvist, Jenny, 1971 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för reumatologi och inflammationsforskning,Institutionen för medicinsk mikrobiologi och immunologi,Institute of Internal Medicine, Dept of Rheumatology and Inflammation Research,Institute of Medical Microbiology/Immunology
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- Fäldt, Jenny, 1971 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för medicinsk mikrobiologi och immunologi,Institute of Medical Microbiology/Immunology
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- Dahlgren, Claes, 1949 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för medicinsk mikrobiologi och immunologi,Institutionen för invärtesmedicin, Avdelningen för reumatologi och inflammationsforskning,Institute of Medical Microbiology/Immunology,Institute of Internal Medicine, Dept of Rheumatology and Inflammation Research
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- Leffler, Hakon (author)
- Lund University,Lunds universitet,Avdelningen för mikrobiologi, immunologi och glykobiologi - MIG,Institutionen för laboratoriemedicin,Medicinska fakulteten,Division of Microbiology, Immunology and Glycobiology - MIG,Department of Laboratory Medicine,Faculty of Medicine
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- Karlsson, Anna, 1967 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för reumatologi och inflammationsforskning,Institute of Internal Medicine, Dept of Rheumatology and Inflammation Research
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(creator_code:org_t)
- 2001
- 2001
- English.
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In: Infection and immunity. - 0019-9567 .- 1098-5522. ; 69:2, s. 832-7
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Abstract
Subject headings
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- We have earlier shown that galectin-3, a lactose-binding mammalian lectin that is secreted from activated macrophages, basophils, and mast cells, induces activation of the NADPH oxidase in exudated but not in peripheral blood neutrophils (A. Karlsson, P. Follin, H. Leffler, and C. Dahlgren, Blood 91:3430-3438, 1998). The alteration in responsiveness occurring during extravasation correlated with mobilization of the gelatinase and/or specific granules to the cell surface, indicating a role for mobilizable galectin-3 receptors. In this study we have investigated galectin-3-induced NADPH oxidase activation, measured as superoxide production, in lipopolysaccharide (LPS)-primed neutrophils. Upon galectin-3 challenge, the LPS-primed cells produced superoxide, both extracellularly and intracellularly. A primed extracellular response to formylmethionyl-Leu-Phe (fMLF) was also achieved. The exposure of complement receptors 1 and 3 as well as the formyl peptide receptor on the cell surface was markedly increased after LPS treatment, indicating that granule fusion with the plasma membrane had occurred. Further assessment of specific markers for neutrophil granules showed that the LPS treatment had mobilized the gelatinase granules but only a minor fraction of the specific granules. We thus suggest that the mechanism behind LPS priming lies at the level of granule (receptor) mobilization for galectin-3 as well as for fMLF.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Immunologi inom det medicinska området (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Immunology in the medical area (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Mikrobiologi inom det medicinska området (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Microbiology in the medical area (hsv//eng)
Keyword
- Antigens
- CD
- physiology
- Antigens
- Differentiation
- pharmacology
- physiology
- Cell Adhesion Molecules
- Cytoplasmic Granules
- enzymology
- Galectin 3
- Gelatinases
- metabolism
- Humans
- Lipopolysaccharides
- pharmacology
- N-Formylmethionine Leucyl-Phenylalanine
- pharmacology
- NADPH Oxidase
- metabolism
- Neutrophil Activation
- drug effects
- Neutrophils
- enzymology
- ultrastructure
Publication and Content Type
- ref (subject category)
- art (subject category)
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