haq sting

STING ligand-1 is a lead STING ligand(IC50 of 68 nM for HAQ STING).

MSA-2 是可口服的非核苷酸 STING 激动剂，MSA-2 的非共价体系二聚体与 STING 纳摩尔亲和力结合。它在同基因小鼠肿瘤模型中显示抗肿瘤活性，与抗 PD-1 协同作用，可刺激肿瘤分泌干扰素-β，诱导肿瘤消退，具有持久的抗肿瘤免疫。[3]

M04 acts as a stimulator of interferon genes (STING) agonist, effectively inducing IFN reporter gene expression in HEK293T cells equipped with wild-type human STING. Its activity is specific, not affecting HEK293T cells with the R71H-G230A-R293Q (HAQ) human STING variant or mouse RAW 264.7 cells, showcasing allelic- and species-dependent effects at a concentration of 75 µM. This compound also stimulates the production of TNF-α, IL-10, IL-1β, and IL-12p70 in human peripheral blood mononuclear cells (PBMCs). At 50 µM, M04 enhances human monocyte-derived dendritic cells' expression of HLA-DR (MHC class II receptor) and co-stimulatory molecules CD40, CD80, and CD86, improving T cell cross-priming in an ex vivo assay.