Tyrosine hydroxylase transcription depends primarily on cAMP response element activity, regardless of the type of inducing stimulus

In neurons and neuroendocrine cells, tyrosine hydroxylase (TH) gene expression is induced by stimuli that elevate cAMP, by depolarization, and by hypoxia. Using these stimuli, we examined TH promoter mutants, cAMP response element binding protein (CREB) phosphorylation site mutants, and transcriptio...

Full description

Saved in:
Bibliographic Details
Published in:Molecular and cellular neuroscience 2004-03, Vol.25 (3), p.536-547
Main Authors: Lewis-Tuffin, Laura J, Quinn, Patrick G, Chikaraishi, Dona M
Format: Article
Language:English
Subjects:
Animals
Cell Hypoxia - drug effects
Cell Hypoxia - physiology
Cyclic AMP - pharmacology
Cyclic AMP Response Element-Binding Protein - biosynthesis
Cyclic AMP Response Element-Binding Protein - genetics
PC12 Cells
Rats
Transcription, Genetic - drug effects
Transcription, Genetic - physiology
Tyrosine 3-Monooxygenase - biosynthesis
Tyrosine 3-Monooxygenase - genetics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In neurons and neuroendocrine cells, tyrosine hydroxylase (TH) gene expression is induced by stimuli that elevate cAMP, by depolarization, and by hypoxia. Using these stimuli, we examined TH promoter mutants, cAMP response element binding protein (CREB) phosphorylation site mutants, and transcriptional interference with dominant negative transcription factors to assess the relative contributions of CREB/AP-1 family members to the regulation of basal and inducible TH transcription in PC12 cells. We found that basal transcription depends on transcription factor activity at the partial dyad (−17 bp), CRE (−45 bp), and AP1 (−205 bp) elements. Induced transcription is regulated primarily by activity at the CRE, with only small contributions from the AP1 or hypoxia response element 1 (HRE1; −225 bp) elements, regardless of inducing stimulus. CREB, ATF-1, and CREMτ all mediate CRE-dependent transcription, with CREB and CREMτ being more effective than ATF-1. Phosphorylation of CREB on Ser133, but not on Ser142 or Ser143, is required for induced transcription, regardless of inducing stimulus.
ISSN:1044-7431
1095-9327
DOI:10.1016/j.mcn.2003.10.010