title: Comparative analysis of mu-opioid receptor expression in immune and neuronal cells.
abstract: Morphine modulates neuronal and immune cell functions via mu-opioid receptors. In primary and Jurkat T cells, and Raji B cells mu-opioid receptor transcripts were detected only after stimulation of the cells with IL-4 or TNF-alpha. Moreover, the amount of the induced mu-opioid receptor mRNA in the immune cells was 15 to 200 times less than those in primary cortical and SH SY5Y neuronal cells. Nevertheless, mu-opioid receptor mRNA in immune cells is processed to functional receptors, as demonstrated by morphine-mediated phosphorylation of mitogen activated protein kinase, morphine-mediated up-regulation of IL-4 mRNA and coupling to adenylyl cyclase in Jurkat cells.
authors.affiliation: Department of Pharmacology and Toxicology, University of Magdeburg, Madgeburg, Germany.
authors.forename: Christine
authors.initials: C
authors.lastname: Börner
authors.forename: Ralf
authors.initials: R
authors.lastname: Stumm
authors.forename: Volker
authors.initials: V
authors.lastname: Höllt
authors.forename: Jürgen
authors.initials: J
authors.lastname: Kraus
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D002540:Cerebral Cortex / Q000166:cytology; D000242:Cyclic AMP / Q000378:metabolism; D004622:Embryo, Mammalian; D005786:Gene Expression Regulation / Q000276:immunology / Q000502:physiology*; D005968:Glutamate Decarboxylase / Q000235:genetics / Q000378:metabolism; D006801:Humans; D017403:In Situ Hybridization; D015847:Interleukin-4 / Q000494:pharmacology; D020928:Mitogen-Activated Protein Kinases / Q000235:genetics / Q000378:metabolism; D009020:Morphine / Q000494:pharmacology; D009294:Narcotics / Q000494:pharmacology; D009447:Neuroblastoma; D009474:Neurons / Q000378:metabolism*; D051381:Rats; D017450:Receptors, Opioid, mu / Q000235:genetics / Q000378:metabolism*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013004:Somatostatin / Q000031:analogs & derivatives / Q000494:pharmacology; D013601:T-Lymphocytes / Q000187:drug effects / Q000378:metabolism*; D014409:Tumor Necrosis Factor-alpha / Q000494:pharmacology; D050598:Vesicular Glutamate Transport Protein 1 / Q000235:genetics / Q000378:metabolism
chemical_list: D009294:Narcotics; D017450:Receptors, Opioid, mu; D014409:Tumor Necrosis Factor-alpha; D050598:Vesicular Glutamate Transport Protein 1; C049352:phenylalanyl-cyclo(cysteinyltyrosyl-tryptophyl-ornithyl-threonyl-penicillamine)threoninamide; D015847:Interleukin-4; D013004:Somatostatin; D009020:Morphine; D000242:Cyclic AMP; D020928:Mitogen-Activated Protein Kinases; D005968:Glutamate Decarboxylase