title: Phorbol ester, forskolin, and serum induction of a human colon nuclear hormone receptor gene related to the NUR 77/NGFI-B genes.
abstract: Two closely related members (mouse NUR 77 and rat NGFI-B) of the serum-inducible "early intermediate" gene family are nuclear hormone receptors containing zinc fingers of the cys2-cys2 type. This paper describes the complementary DNA cloning of the human equivalent of the NUR 77/NGFI-B genes isolated from LS-180 colon adenocarcinoma cells and named the ST-59 gene. ST-59 RNA expression was shown to be rapidly and transiently induced by fetal calf serum. To a lesser extent, epidermal growth factor could induce ST-59 RNA expression, but nerve growth factor, insulin-like growth factor, and fibroblast growth factor were ineffective. ST-59 receptor induction by serum was greatly amplified by cycloheximide and could be detected in actively growing LS-180 cells. The serum induction of RNA expression in these cells could be augmented by treatment with phorbol esters (10(-5) M), forskolin (10(-5) M), and 8-bromo cyclic AMP (4 x 10(-3) M). These results suggest that at least two signal pathways (protein kinase C and protein kinase A) participate in the ST-59 gene mRNA induction.
authors.affiliation: Laboratory of Molecular Endocrinology, Royal Victoria Hospital, McGill University, Montreal, Quebec, Canada.
authors.forename: G P
authors.initials: GP
authors.lastname: Bondy
mesh_terms: D015124:8-Bromo Cyclic Adenosine Monophosphate / Q000494:pharmacology; D000230:Adenocarcinoma / Q000235:genetics / Q000473:pathology*; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D005576:Colforsin / Q000494:pharmacology*; D003110:Colonic Neoplasms / Q000235:genetics / Q000473:pathology*; D003513:Cycloheximide / Q000494:pharmacology; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects; D052138:Genes, Neoplasm / Q000187:drug effects; D006133:Growth Substances / Q000494:pharmacology; D006801:Humans; D051379:Mice; D008969:Molecular Sequence Data; D009363:Neoplasm Proteins / Q000096:biosynthesis* / Q000235:genetics; D009687:Nuclear Proteins / Q000096:biosynthesis* / Q000235:genetics; D010703:Phorbol Esters / Q000494:pharmacology*; D051381:Rats; D011956:Receptors, Cell Surface / Q000096:biosynthesis* / Q000235:genetics; D015290:Second Messenger Systems / Q000187:drug effects; D014407:Tumor Cells, Cultured / Q000378:metabolism
chemical_list: D006133:Growth Substances; D009363:Neoplasm Proteins; D009687:Nuclear Proteins; D010703:Phorbol Esters; D011956:Receptors, Cell Surface; D005576:Colforsin; D015124:8-Bromo Cyclic Adenosine Monophosphate; D003513:Cycloheximide