ODN TTAGGG (ODN A151), an inhibitory oligonucleotide (ODN), is a TLR9, AIM2, and cGAS antagonist. ODN TTAGGG inhibits AIM2 inflammasome activation and cGAS activation through competition with DNA. ODN TTAGGG blocks AIM2-mediated Pyroptosis and inhibits IL-18 production. ODN TTAGGG has immunosuppressive effects and can be used in research on related autoimmune diseases such as lupus erythematosus[1][2][3]. ODN TTAGGG sequence: 5-T-T-A-G-G-G-T-T-A-G-G-G-T-T-A-G-G-G-T-T-A-G-G-G-3.