- Formula:C13 H8 N4 O S
PKR kinase inhibitor.
It is an imidazolo-oxindole derivative that has been shown to inhibit RNA-induced PKR autophosphorylation and rescue PKR-dependent translation block. The alpha subunit of the eukaryotic initiation factor 2 is phosphorylated by the PKR, which is an interferon-induced serine/threonine protein. PKR influences cytokine gene expression stimulated by the latent membrane protein 1 (LMP) in Epstein-Barr virus.
Research shows that PKR inhibitor inhibits the activities of caspase-3 and caspase-8 and prevents increase in pT(451)-PKR and pS(194)-FADD levels in SH-SY5Y nuclei. It has been observed that PKR inhibitor may protect cells against ER stress induced cell damage.