NOCICEPTION ACTIVATES ELK-1 AND SAP1A FOLLOWING EXPRESSION OF THE ORL1 RECEPTOR IN CHINESE-HAMSTER OVARY CELLS

Citation
N. Bevan et al., NOCICEPTION ACTIVATES ELK-1 AND SAP1A FOLLOWING EXPRESSION OF THE ORL1 RECEPTOR IN CHINESE-HAMSTER OVARY CELLS, NeuroReport, 9(12), 1998, pp. 2703-2708
Citations number
25
Categorie Soggetti
Neurosciences
Journal title
ISSN journal
09594965
Volume
9
Issue
12
Year of publication
1998
Pages
2703 - 2708
Database
ISI
SICI code
0959-4965(1998)9:12<2703:NAEASF>2.0.ZU;2-R
Abstract
NOCICEPTIN stimulation of the ORL1 receptor expressed in Chinese hamst er ovary (CHO) cells results in the activation of the extracellular si gnal regulated kinases ERK1 and ERK2. ERK1/ERK2 activation is inhibite d by pertussis toxin, the MEK inhibitor PD 98059 and by transient expr ession of alpha-transducin, indicating that ORL1 up-regulation of thes e kinases occurs as a consequence of the release of the G-protein beta gamma complex following the activation of pertussis-toxin sensitive G alpha(i)-family G-proteins. Using specific reporter genes we demonstr ate that the transcription factors Elk-l and Sapla are activated in a pertussis toxin-sensitive manner as a consequence of ORL1 upregulation of ERK1/ERK2 to induce changes in gene expression. The activation of these transcription factors is also inhibited following treatment with PD 98059 and following coexpression of alpha-transducin. (C) 1998 Lip pincott Williams & Wilkins.