Related Experiment Video
Updated: Aug 11, 2026

Prediction and Validation of Gene Regulatory Elements Activated During Retinoic Acid Induced Embryonic Stem Cell Differentiation
Published on: June 21, 2016
DNA elements mediating retinoid and thyroid hormone regulation of alcohol dehydrogenase gene expression
Abstract:
Vertebrate alcohol dehydrogenase (ADH) plays a role in many alcohol/aldehyde interconversions including the oxidation of retinol to retinaldehyde, the rate-limiting step in the synthesis of retinoic acid. Recent molecular genetic studies on human ADH genes has lent support to a physiological role for ADH in retinoic acid synthesis. A region in the promoter for the human ADH3 gene was previously shown to function as a retinoic acid response element (RARE), prompting an hypothesis for a positive feedback mechanism for controlling retinoic acid synthesis. The ADH3 RARE contains three direct AGGTCA repeats which constitute the critical nucleotides of RAREs present in other genes. We compared the ADH3 RARE to RAREs present in other genes and determined that a region containing two AGGTCA motifs separated by 5 bp was sufficient for regulating gene expression in tissue culture cells. Our experiments also indicate that ADH3 gene expression is repressed by thyroid hormone receptor in the presence of thyroid hormone. The region of the ADH3 promoter containing the RARE was found to harbor a negative thyroid hormone response element. Regulation of ADH gene expression by retinoid and thyroid hormones suggests that ADH plays an important role in retinoic acid synthesis.
More Related Videos
09:49Quantitative Measurement of Relative Retinoic Acid Levels in E8.5 Embryos and Neurosphere Cultures Using the F9 RARE-Lacz Cell-based Reporter Assay
Published on: September 6, 2016
05:03Quantitative Analysis of Dietary Vitamin A Metabolites in Murine Ocular and Non-Ocular Tissues Using High-Performance Liquid Chromatography
Published on: December 27, 2024
Related Concept Videos
Cell Specific Gene Expression
Co-activators and Co-repressors
Eukaryotic Transcription Inhibitors
Eukaryotic transcription inhibitors usually contain two distinct domains, a DNA...
Exon Recombination
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Transducer Mechanism: Nuclear Receptors
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase