Abstract
The androgen receptor (AR, NR3C4) mediates the majority of androgen effects on target cells. The AR is activated following
ligand binding that result is enhanced of target gene transcription. Several cell-based
model systems have been developed that allow sensitive detection and monitoring of
steroids or other compounds with AR bioactivity. Most cell-based AR reporter models
use transgenic gene constructs that include an androgen response element that controls
reporter gene expression. The DNA cis-regulatory elements that respond to AR share
sequence similarity with cis-regulatory elements for glucocorticoid (GR, NR3C1), mineralocorticoid (MR, NR3C2), and progesterone (PGR, NR3C3) receptors, which has compromised AR selectivity for some models. In recent years,
the sensitivity and selectivity of AR bioassays have been significantly improved through
careful selection of cell models, utilization of improved reporter genes, and the
use of yeast two-hybrid AR systems. This review summarizes and compares the currently
available androgen-responsive cell model systems.
Keywords
androgen receptor - luciferase - GFP - in vitro bioassay - reporter gene assays