Description
PD 146176 is a potent and selective inhibitor of reticulocyte 15-
lipoxygenase-
1. It limits hypercholesterolemia-
induced atherosclerosis in New Zealand White rabbits and reduces oxidant stress-
induced apoptosis in endothelial cells. PD 146176 inhibits amyloid β protein aggregate formation without changing total levels of amyloid β precursor protein (APP) in cells stably expressing APP. In addition, it lacks significant non-
specific antioxidant properties.
Uses
PD 146176 has been used to study its influence on
ex vivo leukotriene B4 (LTB4) and lipoxin A4 (LXA4) secretion in adipose tissue.
Definition
ChEBI: PD-146176 is an organic heterotetracyclic compound that is 1H-indole which is ortho-fused to a 2H-1-benzothiopyran group at positions 2-3. It is an inhibitor of 15-lipoxygenase that limits atherosclerotic lesion development in rabbits. It has a role as a ferroptosis inhibitor, an EC 1.13.11.33 (arachidonate 15-lipoxygenase) inhibitor and an antiatherogenic agent. It is an organic heterotetracyclic compound, an organosulfur heterocyclic compound and an organonitrogen heterocyclic compound.
Biological Activity
Specific, non-competitve 15-lipoxygenase (15-LOX) inhibitor (K i = 197nM) that has no demonstrable effect on 5-LOX, 12-LOX, COX-1 or COX-2 (IC 50 = 0.54 μ M for 15-LOX in rabbit reticulocytes). Lacks non-specific antioxidant properties and prevents atherogenesis via regulation of monocyte-macrophage enrichment in vivo .
Biochem/physiol Actions
PD 146176 blocks neuroprotectin D1 (NPD1) and eicosanoid synthesis by inhibiting the 5-lipoxygenase-1 (15-LOX-1) enzyme.
