title: Secretions of MMP-9 by soluble glucocorticoid-induced tumor necrosis factor receptor (sGITR) mediated by protein kinase C (PKC)delta and phospholipase D (PLD) in murine macrophage.
abstract: The secretion of matrix metalloproteinase (MMP-9) is stimulated by the glucocorticoid-induced tumor necrosis factor receptor (GITR), a new tumor necrosis factor receptor (TNFR) family, in murine macrophages via an activation of protein kinase C (PKC)delta and phospholipase D (PLD). Secretions of MMP-9 are stimulated by the phosphatidic acid (PA), a product of PLD activity and an inhibition of PA production by a 1-propanol inhibited secretion of MMP-9 by soluble GITR (sGITR). MMP-9 is not secreted by diacylglycerol (DAG) and an inhibitor of PA phosphatase has no effect on the secretion induced by sGITR, indicating that PA is responsible for MMP-9 secretion in murine macrophages. Our data indicates that sGITR-induced activation of PKCdelta and PLD increases MMP-9 secretions in macrophages.
authors.affiliation: Department of Biological Sciences and the Immunomodulation Research Center, University of Ulsan, Ulsan 680-749, Korea.
authors.forename: Hee-Sook
authors.initials: HS
authors.lastname: Lee
authors.forename: So-Yun
authors.initials: SY
authors.lastname: Park
authors.forename: Hyeon Woo
authors.initials: HW
authors.lastname: Lee
authors.forename: Hye-Seon
authors.initials: HS
authors.lastname: Choi
mesh_terms: D000433:1-Propanol / Q000494:pharmacology; D000818:Animals; D002460:Cell Line; D004075:Diglycerides / Q000494:pharmacology; D004789:Enzyme Activation; D053450:Glucocorticoid-Induced TNFR-Related Protein; D008264:Macrophages / Q000201:enzymology* / Q000378:metabolism*; D020780:Matrix Metalloproteinase 9 / Q000378:metabolism*; D051379:Mice; D010711:Phosphatidate Phosphatase / Q000037:antagonists & inhibitors / Q000378:metabolism; D010712:Phosphatidic Acids / Q000037:antagonists & inhibitors / Q000494:pharmacology; D010739:Phospholipase D / Q000378:metabolism*; D011493:Protein Kinase C / Q000378:metabolism*; D051745:Protein Kinase C-delta; D017475:Receptors, Nerve Growth Factor / Q000378:metabolism*; D018124:Receptors, Tumor Necrosis Factor / Q000378:metabolism*; D012995:Solubility
chemical_list: D004075:Diglycerides; D053450:Glucocorticoid-Induced TNFR-Related Protein; D010712:Phosphatidic Acids; D017475:Receptors, Nerve Growth Factor; D018124:Receptors, Tumor Necrosis Factor; C106544:Tnfrsf18 protein, mouse; D000433:1-Propanol; C497259:Prkcd protein, mouse; D011493:Protein Kinase C; D051745:Protein Kinase C-delta; D010711:Phosphatidate Phosphatase; D010739:Phospholipase D; D020780:Matrix Metalloproteinase 9