Binding of interleukin-8 to heparan sulfate and chondroitin sulfate in lung tissue. 2003

Charles W Frevert, and Michael G Kinsella, and Charie Vathanaprida, and Richard B Goodman, and Denis G Baskin, and Amanda Proudfoot, and Timothy N C Wells, and Thomas N Wight, and Thomas R Martin
Medical Research Service, VA Puget Sound Medical Center, Seattle and Department of Medicine, University of Washington, Seattle, USA. cfrevert@u.washington.edu

Interleukin (IL)-8, a member of the CXC chemokine family, is a potent neutrophil chemotactic factor. Mechanisms that regulate the activity of chemokines in tissue are not clear. The goal of this study was to determine whether IL-8-glycosaminoglycan interactions are responsible for the binding of IL-8 in lung tissue. Experiments were performed with a quantitative tissue-binding assay to measure the amount of 125I-IL-8 binding and an in situ tissue-binding assay to characterize the location of IL-8 binding in lung tissue. Confocal microscopy demonstrated IL-8 binding to specific anatomic locations such as cell surfaces and extracellular matrix that were enriched with heparan sulfate and chondroitin sulfate. Removal of heparan sulfate or chondroitin sulfate from lung tissue significantly decreased the binding of 125I-IL-8. Two forms of IL-8 with single amino acid mutations in the glycosaminoglycan-binding domain showed decreased binding. In addition, studies with normal and monomeric IL-8 showed that dimerization increased the binding of 125I-IL-8 in lung tissue. These findings suggest that IL-8-glycosaminoglycan interactions determine the location where IL-8 binds in lung tissue and provides a site for the dimerization of IL-8, which increases the local concentration of IL-8 in the lungs.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D008168 Lung Either of the pair of organs occupying the cavity of the thorax that effect the aeration of the blood. Lungs
D011485 Protein Binding The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments. Plasma Protein Binding Capacity,Binding, Protein
D002809 Chondroitin Sulfates Derivatives of chondroitin which have a sulfate moiety esterified to the galactosamine moiety of chondroitin. Chondroitin sulfate A, or chondroitin 4-sulfate, and chondroitin sulfate C, or chondroitin 6-sulfate, have the sulfate esterified in the 4- and 6-positions, respectively. Chondroitin sulfate B (beta heparin; DERMATAN SULFATE) is a misnomer and this compound is not a true chondroitin sulfate. Chondroitin 4-Sulfate,Chondroitin 6-Sulfate,Chondroitin Sulfate A,Chondroitin Sulfate C,Blutal,Chondroitin 4-Sulfate, Aluminum Salt,Chondroitin 4-Sulfate, Potassium Salt,Chondroitin 6-Sulfate, Potassium Salt,Chondroitin 6-Sulfate, Sodium Salt,Chondroitin Sulfate,Chondroitin Sulfate 4-Sulfate, Sodium Salt,Chondroitin Sulfate, Calcium Salt,Chondroitin Sulfate, Iron (+3) Salt,Chondroitin Sulfate, Iron Salt,Chondroitin Sulfate, Potassium Salt,Chondroitin Sulfate, Sodium Salt,Chondroitin Sulfate, Zinc Salt,Chonsurid,Sodium Chondroitin Sulfate,Translagen,Chondroitin 4 Sulfate,Chondroitin 4 Sulfate, Aluminum Salt,Chondroitin 4 Sulfate, Potassium Salt,Chondroitin 6 Sulfate,Chondroitin 6 Sulfate, Potassium Salt,Chondroitin 6 Sulfate, Sodium Salt,Chondroitin Sulfate 4 Sulfate, Sodium Salt,Chondroitin Sulfate, Sodium,Sulfate, Chondroitin,Sulfate, Sodium Chondroitin,Sulfates, Chondroitin
D006497 Heparitin Sulfate A heteropolysaccharide that is similar in structure to HEPARIN. It accumulates in individuals with MUCOPOLYSACCHARIDOSIS. Heparan Sulfate,Sulfate, Heparan,Sulfate, Heparitin
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D016209 Interleukin-8 A member of the CXC chemokine family that plays a role in the regulation of the acute inflammatory response. It is secreted by variety of cell types and induces CHEMOTAXIS of NEUTROPHILS and other inflammatory cells. CXCL8 Chemokine,Chemokine CXCL8,Chemotactic Factor, Macrophage-Derived,Chemotactic Factor, Neutrophil, Monocyte-Derived,IL-8,Neutrophil-Activating Peptide, Lymphocyte-Derived,Neutrophil-Activating Peptide, Monocyte-Derived,AMCF-I,Alveolar Macrophage Chemotactic Factor-I,Anionic Neutrophil-Activating Peptide,Chemokines, CXCL8,Chemotactic Factor, Neutrophil,Granulocyte Chemotactic Peptide-Interleukin-8,IL8,Monocyte-Derived Neutrophil Chemotactic Factor,Neutrophil Activation Factor,Alveolar Macrophage Chemotactic Factor I,Anionic Neutrophil Activating Peptide,CXCL8 Chemokines,CXCL8, Chemokine,Chemokine, CXCL8,Chemotactic Factor, Macrophage Derived,Chemotactic Peptide-Interleukin-8, Granulocyte,Granulocyte Chemotactic Peptide Interleukin 8,Interleukin 8,Lymphocyte-Derived Neutrophil-Activating Peptide,Macrophage-Derived Chemotactic Factor,Monocyte-Derived Neutrophil-Activating Peptide,Neutrophil Activating Peptide, Lymphocyte Derived,Neutrophil Activating Peptide, Monocyte Derived,Neutrophil Chemotactic Factor,Neutrophil-Activating Peptide, Anionic,Peptide, Anionic Neutrophil-Activating
D018613 Microscopy, Confocal A light microscopic technique in which only a small spot is illuminated and observed at a time. An image is constructed through point-by-point scanning of the field in this manner. Light sources may be conventional or laser, and fluorescence or transmitted observations are possible. Confocal Microscopy,Confocal Microscopy, Scanning Laser,Laser Microscopy,Laser Scanning Confocal Microscopy,Laser Scanning Microscopy,Microscopy, Confocal, Laser Scanning,Confocal Laser Scanning Microscopy,Confocal Microscopies,Laser Microscopies,Laser Scanning Microscopies,Microscopies, Confocal,Microscopies, Laser,Microscopies, Laser Scanning,Microscopy, Laser,Microscopy, Laser Scanning,Scanning Microscopies, Laser,Scanning Microscopy, Laser
D066298 In Vitro Techniques Methods to study reactions or processes taking place in an artificial environment outside the living organism. In Vitro Test,In Vitro Testing,In Vitro Tests,In Vitro as Topic,In Vitro,In Vitro Technique,In Vitro Testings,Technique, In Vitro,Techniques, In Vitro,Test, In Vitro,Testing, In Vitro,Testings, In Vitro,Tests, In Vitro,Vitro Testing, In

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