title: [Adenylate cyclase in synchronized neuroblastoma cells: enzyme response during the cell cycle].
abstract: Mouse neuroblastoma cells derived from cholinergic clone NS 20 were synchronized by isoleucine plus glutamine starvation. Basal adenylate cyclase activity increased linearly during the different phases of the cell cycle. Pharmacological data are presented indicating that adenosine, dopamine and prostaglandin E1 control through distinct receptors the same adenylate cyclase activity. The demonstration that basal enzyme activity and its responsiveness to the three agonists tested followed different evolution patterns during the cell cycle suggests that enzyme activity (or content) and activity (or number) of enzyme coupled receptors can be independently modulated.
mesh_terms: D000241:Adenosine / Q000494:pharmacology*; D000262:Adenylyl Cyclases / Q000378:metabolism*; D002455:Cell Division; D002460:Cell Line; D004298:Dopamine / Q000494:pharmacology*; D005476:Fluphenazine / Q000494:pharmacology; D009447:Neuroblastoma / Q000201:enzymology*; D011458:Prostaglandins E / Q000494:pharmacology*; D013806:Theophylline / Q000494:pharmacology; D013997:Time Factors
chemical_list: D011458:Prostaglandins E; D013806:Theophylline; D000262:Adenylyl Cyclases; D000241:Adenosine; D005476:Fluphenazine; D004298:Dopamine
vernacular_title: L'adénylate cyclase de cellules de neuroblastome synchronisées: évolution au cours du cycle cellulaire de la réponse de l'enzyme