PI 3-Kδ/γ Inhibitor XV, SW-14 - Calbiochem

General Description

A cell permeable, ATP competitive tolyl quinazolinone inhibitor of PI 3-Kδ/γ that displays 70-fold selectivity over PI 3-Kβ and 900-fold selectivity over PI 3-Kα in enzymatic assays with an IC₅₀ = 9 nM for PI3Kδ and 21 nM for PI 3-Kγ and in a cell-based assay with an EC₅₀ = 132 nM for PI 3-Kδ and 4.5 nM for PI 3-K γ. It elicits an inflammatory marker suppression effect in co-cultures of HUVEC and PBMCs stimulated with lipopolysacharide. Additionally, TNFα production decreases dose-dependently in the same cell lines treated with 370 nM to 10 μM of compound. SW14 exhibits a stronger effect compared to that of PI 3-Kδ inhibition (SW30) or pan-PI 3-K inhibition with different anti-inflammatory profile. In contrast to PI 3-Kα/β it also shows very little anti-proliferative effects even at the highest dose tested (10 μM) in HUVEC culture only.