GSK360A (GSK1120360A) is an orally active HIF-prolyl 4-hydroxylase (HIF-PHD) inhibitor that targets all three HIF-PHD isoforms (PHD1 > PHD2 = PHD3) with high potency (IC50 from 10-120 nM) in a 2-oxoglutarate (2-OG)-competitive manner. GSK360A promotes cardiomyocyte mitochondrial aerobic glycolysis under normoxic conditions by stabilizing cellular hypoxia-inducible factor-1 (HIF-1) and thereby upregulating HIF-1α target genes transcription (50 μM for 8 hrs in murine cardiomyocyte HL-1 cultures), including pyruvate dehydrogenase kinase-1 (PDK1) and hexokinase II (HKII). GSK360A treatment is shown to protect against acute myocardial ischemia–reperfusion injury (IRI) both in cultures and in rats in vivo (30 mg/kg p.o.) by reducing mitochondrial permeability transition pore (MPTP) opening and oxidative stress during IRI.
Orally active, potent HIF prolyl 4-hydroxylase (PHD) inhibitor with in vitro and in vivo efficacy against acute myocardial ischemia-reperfusion injury (IRI).