Description_x000D_ Packaging_x000D_ 5, 25 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ BMS-189453 is a potent RARβ agonist that acts as an antagonist against RARα and RARγ. BMS-189453 induces RARβ reporter gene expression at sub nanomolar levels, and is 30 fold more potent than all-trans retinoic acid for inducing TGFβ activity in normal breast cells. The compound BMS-189453 does not transactivate RARα or γ transcriptional activity, but binding to those family members induces a strong transrepression of phorbol ester-induced AP-1 activity (IC50 = 0.1 nM in HeLa and MCSF-7). BMS-189453 significantly increases the efficiency of cardiac differentiation of hESCs._x000D_ BMS-189453 specifically has sufficient bioavailability in rats and monkeys. BMS-189453 only binds to α, β, and γ retinoid receptors but its activation is unknown. BMS-189453 is found to inhibit the action of collagenase-3 (MMP-13) which catalyses cartilage matrix degradation. Thus, it serves to treat rheumatoid arthritis._x000D_ Features and Benefits_x000D_ This compound is a featured product for Gene Regulation research. Click here to discover more featured Gene Regulation products. Learn more about bioactive small molecules for other areas of research at sigma.com/discover-bsm.