RC363 is an inhibitor of ferroptosis and a derivative of the antioxidant and hypocholesterolemic agent probucol .1It reduces 2,2-diphenyl-1-picrylhydrazyl radicals by approximately 40% in a cell-free assay when used at a concentration of 25 μM. RC363 prevents glutamate-induced toxicity in HT22 cultured hippocampal cells (IC50= 234.5 nM) but does not reduce oxidant levels in these cells. It increases the levels of glutathioneperoxidase 1 (GPX1) and the activity of GPX in glutamate-challenged HT22 cells when used at a concentration of 3 μM. RC363 inhibits ferroptosis induced by the GPX4 inhibitor RSL3 in HT22 cells (IC50= 173.6 nM). 1.Bueno, D.C., Canto, R.F.S., de Souza, V., et al.New probucol analogues inhibit ferroptosis, improve mitochondrial parameters, and induce glutathioneperoxidase in HT22 cellsMol. Neurobiol.57(8)3273-3290(2020)
RC574 is an inhibitor of ferroptosis and a derivative of the antioxidant and hypocholesterolemic agent probucol .1It inhibits glutamate-induced cell death in HT22 cells (IC50= 276.2 nM) and mouse primary cortical neurons when used at a concentration of 3 μM. RC574 (3 μM) increases glutathioneperoxidase 1 (GPX1) levels and GPX activity, as well as inhibits glutamate-induced mitochondrial superoxide anion production, in HT22 cells. It completely inhibits ferroptosis induced by the GPX4 inhibitor RSL3 in HT22 cells when used at concentrations ranging from 62.5 to 1,000 nM. 1.Bueno, D.C., Canto, R.F.S., de Souza, V., et al.New probucol analogues inhibit ferroptosis, improve mitochondrial parameters, and induce glutathioneperoxidase in HT22 cellsMol. Neurobiol.57(8)3273-3290(2020)
JKE-1716 is an inhibitor of glutathioneperoxidase 4 (GPX4) and a derivative of the GPX4 inhibitor ML-210 .1JKE-1716 reduces viability of LOX-IMVI cancer cells in a concentration-dependent manner and in a panel of additional cancer cell lines, an effect that can be blocked by the ferroptosis inhibitor ferrostatin-1 . 1.Eaton, J.K., Furst, L., Ruberto, R.A., et al.Selective covalent targeting of GPX4 using masked nitrile-oxide electrophilesNat. Chem. Biol.16(5)497-506(2020)