title: Beta-adrenergic-stimulated adenylate cyclase activity in normal and EBV-transformed lymphocytes.
abstract: Beta-adrenergic-associated cyclic AMP accumulation was studied in intact lymphocytes before and after transformation with Epstein-Barr virus into immortal cell lines. Although a marked reduction in isoproterenol-stimulated cyclic AMP synthesis was observed in transformed cells, forskolin-stimulated cyclic AMP accumulation was preserved. A parallel loss of 125-iodocyanopindolol binding sites suggests that the reduction in beta-adrenergic-stimulated AMP synthesis is due to receptor down-regulation.
mesh_terms: D000262:Adenylyl Cyclases / Q000378:metabolism*; D002460:Cell Line; D002472:Cell Transformation, Viral; D005576:Colforsin / Q000494:pharmacology; D000242:Cyclic AMP / Q000096:biosynthesis*; D004854:Herpesvirus 4, Human / Q000502:physiology; D020120:Iodocyanopindolol; D007545:Isoproterenol / Q000494:pharmacology; D008214:Lymphocytes / Q000187:drug effects / Q000201:enzymology*; D010869:Pindolol / Q000031:analogs & derivatives / Q000378:metabolism; D011943:Receptors, Adrenergic, beta / Q000187:drug effects / Q000502:physiology*
chemical_list: D011943:Receptors, Adrenergic, beta; D005576:Colforsin; D020120:Iodocyanopindolol; D010869:Pindolol; D000242:Cyclic AMP; D000262:Adenylyl Cyclases; D007545:Isoproterenol