M04

M04 is an agonist of STING. It induces the expression of the IFN reporter gene in HEK293T cells expressing wild-type human STING, but does not induce this expression in HEK293T cells expressing the R71H-G230A-R293Q (HAQ) STING variant or in mouse RAW 264.7 cells, indicating that its activity is dependent on allelic and species variations. M04 induces the production of TNF-α, IL-10, IL-1β, and IL-12p70 in human peripheral blood mononuclear cells (PBMCs) . At a concentration of 50 µM, M04 stimulates dendritic cells isolated from PBMCs to express the MHC class II cell surface receptor HLA-DR and co-stimulatory molecules CD40, CD80, and CD86, and also enhances their ability to activate T cells in an ex vivo assay. M04 can be used in research on inflammatory immune diseases[1].