THE ANALYSIS OF MODIFIED PEROXISOME PROLIFERATOR RESPONSIVE ELEMENTS OF THE PEROXISOMAL BIFUNCTIONAL ENZYME IN TRANSFECTED HEPG2 CELLS REVEALS 2 REGULATORY MOTIFS
O. Bardot et al., THE ANALYSIS OF MODIFIED PEROXISOME PROLIFERATOR RESPONSIVE ELEMENTS OF THE PEROXISOMAL BIFUNCTIONAL ENZYME IN TRANSFECTED HEPG2 CELLS REVEALS 2 REGULATORY MOTIFS, FEBS letters, 360(2), 1995, pp. 183-186
Peroxisome proliferators (PPs) are non-genotoxic carcinogens in rodent
s, They can induce the expression of numerous genes via the heterodime
rization of two members of the steroid hormone receptor superfamily, c
alled the peroxisome proliferator-activated receptor (PPAR) and the 9-
cis retinoic acid receptor (RXR). Many of the PP responsive genes poss
ess a peroxisome proliferator response element (PPRE) formed by two TG
ACCT-related motifs. The bifunctional enzyme (HD) PPRE contains 3 such
motifs, creating DR1 and DR2 sequences. PPAR and RXR regulate transcr
iption via the DR1 element while DR2 modulates the expression of the g
ene via auxiliary factors in HepG2 cells.