Abstract
Retinoids have been used as therapeutics for diverse skin diseases, but their side effects limit clinical usage. Here, we report that extracts of two soybeans, Glycine max and Rhynchosia nulubilis, and their ethyl acetate fractions increased the transcriptional activity of retinoic acid receptors (RARs), and that daidzin and genistin were the major constituents of the active fractions. Daidzin and its aglycone, daidzein, induced transcriptional activity of RAR and RARγ. FRET analysis demonstrated that daidzein, but not daidzin, bound both RAR and RARγ with EC50 values of 28μM and 40μM, respectively. Daidzein increased expression of mRNA of RARγ through direct binding of RAR and recruitment of p300 to the RARγ2 promoter. Further, mRNA and gelatinolytic activity of matrix metalloproteinase-9 were decreased by daidzein in HaCaT cells. Together, these results indicate that daidzein functions as a ligand of RAR that could be a candidate therapeutic for skin diseases.
Keywords:
Daidzein; Ligand; Retinoic acid receptor; Skin.
Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.
Publication types
-
Research Support, Non-U.S. Gov't
MeSH terms
-
Binding Sites
-
Cell Line
-
E1A-Associated p300 Protein / genetics
-
E1A-Associated p300 Protein / metabolism
-
Gene Expression / drug effects
-
Glycine max / chemistry*
-
Growth Inhibitors / chemistry
-
Growth Inhibitors / isolation & purification
-
Growth Inhibitors / pharmacology*
-
Humans
-
Isoflavones / chemistry
-
Isoflavones / isolation & purification
-
Isoflavones / pharmacology*
-
Keratinocytes / cytology
-
Keratinocytes / drug effects*
-
Keratinocytes / metabolism
-
Ligands
-
Matrix Metalloproteinase 9 / genetics
-
Matrix Metalloproteinase 9 / metabolism*
-
Molecular Docking Simulation
-
Plant Extracts / chemistry
-
Promoter Regions, Genetic
-
Protein Binding
-
RNA, Messenger / genetics
-
RNA, Messenger / metabolism*
-
Receptors, Retinoic Acid / chemistry*
-
Receptors, Retinoic Acid / genetics
-
Receptors, Retinoic Acid / metabolism
-
Retinoic Acid Receptor gamma
-
Transcriptional Activation / drug effects
Substances
-
Growth Inhibitors
-
Isoflavones
-
Ligands
-
Plant Extracts
-
RNA, Messenger
-
Receptors, Retinoic Acid
-
genistin
-
daidzin
-
daidzein
-
E1A-Associated p300 Protein
-
EP300 protein, human
-
Matrix Metalloproteinase 9