1,3-benzoxazol-2-yl 3-benzyl-3H-[1,2,3]triazolo[4,5-d]pyrimidin-7-yl sulfide

VAS-2870 (722456-31-7) is a NAD(P)H oxidase (Nox) inhibitor. Abolishes PDGF-mediated Nox activation and ROS production (100% at 10 μM). Inhibits PMA-induced oxidative burst in HL-60 cells (IC50=2 μM). VAS-2870 enhances TGF-β-induced apoptosis in liver tumor cells.

VAS 2870, is a NADPH oxidase (NOX) inhibitor.

VAS2870 has been used as a nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (NOX) inhibitor:

• to study the importance of NOX-derived reactive oxygen species in cytoskeletal organization, proper localization of E-cadherin and cell motility during zebrafish epiboly
• to study the function of Nox2 and Nox4 in lipopolysaccharide (LPS)-induced intestinal injury in high-fat diet (HFD) fed mice
• to reduce the reactive oxygen species level and study its influence on inhibiting the induction of trained innate immunity in monocytes

A cell-permeable thiotriazolopyrimidine compound that acts as an effective NADPH oxidase (NOX) inhibitor (IC₅₀ = 10.6 μM against NOX activity in human neutrophil lysates) and is widely used for studying NOX-dependent cellular ROS formations in various cultures, including oxLDL-treated HUVEC (complete inhibition at 5 μM), PDGF-induced primary rat VSMC (vascular smooth muscle cells; complete inhibition at 10 μM), as well as aortic sections from spontaneously hypertensive rats (SHRs) (72% inhibition at 10 μM). Also shown to inhibit PDGF-BB-induced murine EB (embryonid body) vacularization (74% inhibition at 50 μM) and improve ACh-induced vasorelaxation of isolated rat aortic rings from both SHRs and non-hypertensive rats ex vivo (by 41.7 and 34.5%, respectively, at 10 μM).

VAS2870 is a cell-permeable and specific NADPH oxidase (NOX) inhibitor that effectively suppresses growth factor-mediated ROS liberation in VSMC.

Store at +4°C

1) Freyhaus et al. (2006), Novel Nox inhibitor VAS2870 attenuates PDGF-dependent smooth muscle cell chemotaxis, but not proliferation; Cardiovasc. Res. 71 331 2) Stielow et al. (2006), Novel Nox inhibitor of oxLDL-induced reactive oxygen species formation in human endothelial cells; Biochem. Biophys. Res. Commun. 344 200 3) Sancho et al. (2011), The NADPH oxidase inhibitor VAS2870 impairs cell growth and enhances TGF-β-induced apoptosis of liver tumor cells; Biochem. Pharmacol. 81 917