Abstract:
:The aim of this study was to examine the effects of the phorbol ester O-tetradecanoylphorbol 13-acetate (TPA) and forskolin on delta-opioid receptor gene transcription. Treatment of NG108-15 cells with TPA (100 nM) for 48 h increased delta-opioid receptor mRNA levels, whereas different concentrations of forskolin induced a transient down-regulation of mRNA 5 h after treatment, followed by increased mRNA levels after 48 h. Reporter gene assays in transiently transfected NG108-15 cells in combination with electrophoretic mobility shift assays indicate that the increase of delta-opioid receptor mRNA after stimulation with TPA is mediated by transcription factor AP-1, which binds 355 bp upstream of the start codon within the gene promoter. The forskolin-induced mRNA increase is mediated neither by a cyclic AMP-response element nor indirectly by AP-1 up-regulation. Reporter gene assays, mutational analysis, and electrophoretic mobility shift assays revealed that delta-opioid receptor gene regulation by forskolin is mediated by transcription factor AP-2, which binds to an element 157 bp upstream of the start codon.
journal_name
J Neurochemjournal_title
Journal of neurochemistryauthors
Wöltje M,Kraus J,Höllt Vdoi
10.1046/j.1471-4159.2000.0741355.xkeywords:
subject
Has Abstractpub_date
2000-04-01 00:00:00pages
1355-62issue
4eissn
0022-3042issn
1471-4159journal_volume
74pub_type
杂志文章abstract::Neural progenitor cells isolated from the embryonic cerebral cortex are well known to differentiate into neurons and glial cells, but recent reports have demonstrated differentiation into smooth muscle cells (SMCs) under the influence of fetal bovine serum. In this study, we report that agonists for G protein-coupled ...
journal_title:Journal of neurochemistry
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journal_title:Journal of neurochemistry
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abstract::We studied the time course of oxidatively modified proteins in the nigrostriatal dopaminergic system following transection of the medial forebrain bundle by quantifying the number of carbonyl groups coupled to striatal and nigral protein homogenates, an index of metal-catalyzed oxidations. We found a striking effect o...
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abstract::Overexpression of gp120, the major coat protein of the HIV-1 virus, in central glial cells, or treatment of neurons with gp120 in culture, produces apoptotic neuronal death. Here we demonstrate that CEP-1347 (KT7515), an inhibitor of mixed lineage kinase 3 (MLK3), an upstream activator of JNK, inhibits gp120IIIB-induc...
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journal_title:Journal of neurochemistry
pub_type: 杂志文章
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更新日期:1995-03-01 00:00:00
abstract::There is considerable current interest in the neuroprotective effects of flavonoids. This study focuses on the potential for dietary flavonoids, and their known physiologically relevant metabolites, to enter the brain endothelium and cross the blood-brain barrier (BBB) using well-established in vitro models (brain end...
journal_title:Journal of neurochemistry
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abstract::Methylphenidate (MP) is widely used to treat attention deficit/hyperactivity disorder in children. However, basic research has been mainly focused on MP treatment in adult, behaviorally normal rodents. Here we analyzed MP-evoked changes of dopamine (DA) release in the limbic system of juvenile rodents with hyperactive...
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