Abstract
Obesity-induced adipose tissue inflammation is characterized by increased macrophage infiltration and cytokine production, and is associated with metabolic disorders. LIGHT/TNFSF14, a member of the TNF superfamily, plays a role in the development of various inflammatory diseases. The purpose of this study was to examine the involvement of soluble LIGHT (sLIGHT) in obesity-induced adipose tissue inflammatory responses. LIGHT gene expression on macrophages/adipocytes was upregulated by treatment with obesity-related factors. sLIGHT displayed chemotactic activity for macrophages and T cells, and enhanced inflammatory cytokine release from macrophages, adipocytes, and adipose tissue-derived SVF cells. The sLIGHT-induced inflammatory responses were blunted by neutralizing anti-HVEM antibody or knockout of HVEM, a receptor for sLIGHT. These findings indicate that sLIGHT enhances adipose tissue inflammatory responses through its interaction with HVEM.
Copyright © 2011 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adipocytes / metabolism
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Adipose Tissue, White / cytology
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Adipose Tissue, White / metabolism*
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Animals
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Cell Line
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Cells, Cultured
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Chemotaxis
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Culture Media, Conditioned
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Cytokines / metabolism*
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Dietary Fats / administration & dosage
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Gene Expression Regulation
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Inflammation Mediators / metabolism*
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Macrophages / metabolism
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Mice
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Mice, Inbred C57BL
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Mice, Knockout
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Obesity / metabolism*
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Oxidative Stress
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RNA, Messenger / metabolism
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Receptors, Tumor Necrosis Factor, Member 14 / antagonists & inhibitors
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Receptors, Tumor Necrosis Factor, Member 14 / genetics
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Receptors, Tumor Necrosis Factor, Member 14 / metabolism*
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Stromal Cells / metabolism
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Tumor Necrosis Factor Ligand Superfamily Member 14 / genetics
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Tumor Necrosis Factor Ligand Superfamily Member 14 / metabolism*
Substances
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Culture Media, Conditioned
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Cytokines
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Dietary Fats
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Inflammation Mediators
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RNA, Messenger
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Receptors, Tumor Necrosis Factor, Member 14
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Tnfrsf14 protein, mouse
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Tnfsf14 protein, mouse
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Tumor Necrosis Factor Ligand Superfamily Member 14