EM 163

EM 163 is a TIR-TIR interaction inhibitor, that is a TIR (Toll/ interleukin-1 receptor) domain peptidomimetic of MyD88 protein. EM 163 targets TIR domains in IL-1 receptors blocking the interaction with MyD88. EM 163 inhibits staphylococcal enterotoxin B (SEB)-induced inflammatory cytokine production in vivo. EM 163 protects mice from SEB shock-induced death. In rat hippocampal neurons in vitro, EM 163 blocks the activation of p38 and the inhibitory effects of IL-1β on protein synthesis triggered by chemically-induced long-term potentiation (LTP).