GSK-872 hydrochloride

GSK-872 hydrochloride is a RIPK3 inhibitor, which binds RIP3 kinase domain with an IC50 of 1.8 nM, and inhibits kinase activity with an IC50 of 1.3 nM. GSK-872 hydrochloride decreases the RIPK3-mediated necroptosis and subsequent cytoplasmic translocation and expression of HMGB1, as well as ameliorates brain edema and neurological deficits in early brain injury[1][2][3].

Signaling Pathways >> Apoptosis >> RIP kinase

Research Areas >> Inflammation/Immunology

IC50: 1.3 nM (RIPK3)[1]

GSK-872 (GSK'872; 0.01-3 μM; 24 hours) blocks TNF-induced necroptosis in human HT-29 cells in a concentration-dependent manner[1]. Cell Viability Assay[1] Cell Line: HT-29 cells Concentration: 0.01, 0.03 , 0.1, 0.3, 1, and 3 μM Incubation Time: 24 hours Result: Blocked TNF-induced necroptosis in a concentration-dependent manner.

GSK-872 hydrochloride (25 mM; intracerebroventricular injection) can attenuate brain edema and improve neurological function following subarachnoid hemorrhage (SAH) and reduce the number of necrotic cells. GSK-872 hydrochloride can also decrease the protein levels of RIPK3 and MLKL, and cytoplasmic translocation and expression of HMGB1, an important pro-inflammatory protein[3]. Animal Model: Eight weeks old Sprague-Dawley male rats with 300-320 g body weight (rat SAH model)[3] Dosage: 25 mM/6 μL Administration: Syringe pump (intracerebroventricular) at 30 min after SAH Result: Attenuated brain edema, improved neurological function and decreased the number of necrotic cells in the ipsilateral cortex. Decreased the expression of RIPK3, MLKL and cytoplasmic HMGB1 at 72 h after SAH in the ipsilateral cortex.

[1]. Mandal P, et al. RIP3 induces apoptosis independent of pronecrotic kinase activity. Mol Cell. 2014 Nov 20;56(4):481-95.

[2]. Arora D, et al. Deltamethrin induced RIPK3-mediated caspase-independent non-apoptotic cell death in rat primary hepatocytes. Biochem Biophys Res Commun. 2016 Oct 14;479(2):217-223.

[3]. Chen T, et al. Inhibiting of RIPK3 attenuates early brain injury following subarachnoid hemorrhage: Possibly through alleviating necroptosis. Biomed Pharmacother. 2018;107:563-570.