Comparison of the prostaglandin E (EP) receptor of human neutrophils and HL-60 cells differentiated with DMSO.
Human promyelocytic leukaemic HL-60 cells can be differentiated with DMSO to become neutrophil-like. In this study, the prostanoid receptors linked to adenylate cyclase have been compared in human neutrophils and in differentiated HL-60 cells. Both cell types appear to express EP2 receptors as recognised by the ability of EP2 agonists and not EP1 or EP3 agonists to increase cell cyclic AMP levels, and the finding that the increase in cyclic AMP induced by PGE2 was not blocked by the EP4 receptor antagonist AH 23,848 (30 microM). Neither cell type appears to express receptors for PGI2, but human neutrophils and not differentiated HL-60 cells express receptors for PGD2. In addition, human neutrophils may contain EP3 receptors linked to a reduction in cyclic AMP levels. The lack of other prostanoid receptors coupled to adenylate cyclase in HL-60 cells suggests that these cells may provide a useful starting point for the cloning of the EP2 receptor.
Armstrong
R A
RA
Department of Pharmacology, University of Edinburgh, Scotland.
Talpain
E
E
D000262:Adenylyl Cyclases / Q000187:drug effects; D002454:Cell Differentiation / Q000187:drug effects; D004121:Dimethyl Sulfoxide / Q000494:pharmacology*; D004789:Enzyme Activation; D006801:Humans; D015473:Leukemia, Promyelocytic, Acute / Q000473:pathology*; D009504:Neutrophils / Q000737:chemistry / Q000187:drug effects*; D015230:Prostaglandin D2; D011971:Receptors, Immunologic; D011982:Receptors, Prostaglandin / Q000187:drug effects; D018078:Receptors, Prostaglandin E / Q000032:analysis / Q000187:drug effects*; D014407:Tumor Cells, Cultured
D011971:Receptors, Immunologic; D011982:Receptors, Prostaglandin; D018078:Receptors, Prostaglandin E; D000262:Adenylyl Cyclases; D015230:Prostaglandin D2; C036293:prostaglandin D2 receptor; D004121:Dimethyl Sulfoxide