title: NOX2 in lung inflammation: quantum dot based in situ imaging of NOX2-mediated expression of vascular cell adhesion molecule-1.
abstract: Quantum dot (QD) imaging is a powerful tool for studying signaling pathways as they occur. Here we employ this tool to study adhesion molecule expression with lung inflammation in vivo. A key event in pulmonary inflammation is the regulation of vascular endothelial cell adhesion molecule-1 (VCAM), which drives activated immune cell adherence. The induction of VCAM expression is known to be associated with reactive oxygen species (ROS) production, but the exact mechanism or the cellular source of ROS that regulates VCAM in inflamed lungs is not known. NADPH oxidase 2 (NOX2) has been reported to be a major source of ROS with pulmonary inflammation. NOX2 is expressed by both endothelial and immune cells. Here we use VCAM-targeted QDs in a mouse model to show that NOX2, specifically endothelial NOX2, induces VCAM expression with lung inflammation in vivo.
authors: Institute for Environmental Medicine, Univ. of Pennsylvania School of Medicine, 1 John Morgan Bldg., 3620 Hamilton Walk, Philadelphia, PA 19104-6068. shampac@mail.med.upenn.edu.
authors: Rebecca L
authors: RL
authors: Orndorff
authors: Nankang
authors: N
authors: Hong
authors: Kevin
authors: K
authors: Yu
authors: Sheldon I
authors: SI
authors: Feinstein
authors: Blaine J
authors: BJ
authors: Zern
authors: Aron B
authors: AB
authors: Fisher
authors: Vladimir R
authors: VR
authors: Muzykantov
authors: Shampa
authors: S
authors: Chatterjee
mesh_terms: D000818:Animals; D006801:Humans; D008070:Lipopolysaccharides; D008297:Male; D008562:Membrane Glycoproteins / Q000235:genetics / Q000378:metabolism*; D051379:Mice; D000074662:NADPH Oxidase 2; D019255:NADPH Oxidases / Q000235:genetics / Q000378:metabolism*; D019408:Platelet Endothelial Cell Adhesion Molecule-1 / Q000096:biosynthesis; D011014:Pneumonia / Q000139:chemically induced / Q000378:metabolism*; D045663:Quantum Dots; D019010:Vascular Cell Adhesion Molecule-1 / Q000096:biosynthesis*
chemical_list: D008070:Lipopolysaccharides; D008562:Membrane Glycoproteins; D019408:Platelet Endothelial Cell Adhesion Molecule-1; D019010:Vascular Cell Adhesion Molecule-1; C056558:CYBB protein, human; C488842:Cybb protein, mouse; D000074662:NADPH Oxidase 2; D019255:NADPH Oxidases
keywords: lipopolysaccharide; nicotinamide adenine dinucleotide phosphate oxidase 2; platelet endothelial cell adhesion molecule-1; reactive oxygen species; redox signaling