title: Egg-derived peptide IRW inhibits TNF-α-induced inflammatory response and oxidative stress in endothelial cells.
abstract: Oxidative stress and vascular inflammatory response are key mediators of endothelial dysfunction that leads to cardiovascular diseases. A novel peptide, IRW, was previously characterized from egg protein with angiotensin converting enzyme inhibitory activity. The purpose of the study was to investigate the effects and molecular mechanisms of IRW on regulating inflammatory response in endothelial cells. The results showed that tumor necrosis factor-α (TNF-α) significantly increased the protein levels of intercellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), and monocyte chemotactic protein-1 (MCP-1), whereas pretreatment with IRW inhibited TNF-α-induced increases of ICAM-1, VCAM-1, and MCP-1 production in a concentration-dependent manner. IRW also reduced the levels of superoxide ions in the presence and absence of TNF-α. These results indicate the potential role of IRW in preventing cardiovascular disease as a functional food ingredient or nutraceutical.
authors.affiliation: Department of Agricultural, Food and Nutritional Science, Faculty of Agricultural, Life and Environmental Sciences, University of Alberta, Edmonton, Alberta, Canada.
authors.forename: Wuyang
authors.initials: W
authors.lastname: Huang
authors.forename: Subhadeep
authors.initials: S
authors.lastname: Chakrabarti
authors.forename: Kaustav
authors.initials: K
authors.lastname: Majumder
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Jiang
authors.forename: Sandra T
authors.initials: ST
authors.lastname: Davidge
authors.forename: Jianping
authors.initials: J
authors.lastname: Wu
mesh_terms: D000818:Animals; D018932:Chemokine CCL2 / Q000235:genetics / Q000276:immunology; D002645:Chickens; D004527:Egg Proteins / Q000737:chemistry*; D061307:Human Umbilical Vein Endothelial Cells / Q000187:drug effects* / Q000276:immunology; D006801:Humans; D018799:Intercellular Adhesion Molecule-1 / Q000235:genetics / Q000276:immunology; D018384:Oxidative Stress / Q000187:drug effects*; D010455:Peptides / Q000494:pharmacology*; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics / Q000276:immunology*; D019010:Vascular Cell Adhesion Molecule-1 / Q000235:genetics / Q000276:immunology
chemical_list: C111835:CCL2 protein, human; D018932:Chemokine CCL2; D004527:Egg Proteins; D010455:Peptides; D014409:Tumor Necrosis Factor-alpha; D019010:Vascular Cell Adhesion Molecule-1; D018799:Intercellular Adhesion Molecule-1