title: 15-Deoxy-delta(12,14)-prostaglandin J2 is a negative regulator of macrophage functions.
abstract: 15-Deoxy-delta(12,14)-prostaglandin J2 (dPGJ2) is a bioactive metabolite of the J2 series that has been identified as a ligand for peroxisome proliferator-activated receptor gamma (PPARgamma). Because PPARgamma is highly expressed in macrophages obtained from stimulant-elicited peritonitis, but not in resident peritoneal macrophages, the effect of dPGJ2 was tested on innate functions of macrophages. dPGJ2 inhibited adhesion and phagocytosis of Escherichia coli. Inhibition of these functions by dPGJ2 was not mediated via the adhesion molecule Mac-1. In addition, dPGJ2 inhibited chemotaxis toward zymosan-activated serum and it also inhibited the production of superoxide anion when macrophages were stimulated with phorbol 12-myristate 13-acetate (PMA) or opsonized zymosan (OPZ), but not lipopolysaccharide. Similarly, dPGJ2 inhibited the production of hydrogen peroxide when macrophages were stimulated with either PMA or OPZ. These studies suggest that dPGJ2 may be a negative regulator of macrophage functions.
authors.affiliation: Department of Pharmacology, Osaka Dental University, Hirakata, Japan. aazuma@cc.osaka-dent.ac.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Azuma
authors.forename: M
authors.initials: M
authors.lastname: Shinohara
authors.forename: P L
authors.initials: PL
authors.lastname: Wang
authors.forename: K
authors.initials: K
authors.lastname: Ohura
mesh_terms: D000818:Animals; D002448:Cell Adhesion / Q000187:drug effects; D002633:Chemotaxis / Q000187:drug effects; D004926:Escherichia coli; D006861:Hydrogen Peroxide / Q000378:metabolism; D007249:Inflammation; D008024:Ligands; D008070:Lipopolysaccharides / Q000494:pharmacology; D016177:Macrophage-1 Antigen / Q000502:physiology; D017737:Macrophages, Peritoneal / Q000187:drug effects / Q000502:physiology*; D008297:Male; D018384:Oxidative Stress; D010538:Peritonitis / Q000276:immunology / Q000473:pathology; D010587:Phagocytosis / Q000187:drug effects; D015230:Prostaglandin D2 / Q000031:analogs & derivatives* / Q000494:pharmacology / Q000502:physiology*; D051381:Rats; D017208:Rats, Wistar; D018160:Receptors, Cytoplasmic and Nuclear / Q000819:agonists / Q000187:drug effects / Q000502:physiology*; D013481:Superoxides / Q000378:metabolism; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology; D014157:Transcription Factors / Q000819:agonists / Q000187:drug effects / Q000502:physiology*; D015054:Zymosan / Q000494:pharmacology
chemical_list: C097240:15-deoxy-delta(12,14)-prostaglandin J2; D008024:Ligands; D008070:Lipopolysaccharides; D016177:Macrophage-1 Antigen; D018160:Receptors, Cytoplasmic and Nuclear; D014157:Transcription Factors; D013481:Superoxides; D015054:Zymosan; D006861:Hydrogen Peroxide; D013755:Tetradecanoylphorbol Acetate; D015230:Prostaglandin D2