ODN 2088 is a potent TLR3 , TLR7 and TLR9 inhibitor. ODN 2088 shows no cytotoxic. ODN 2088 inhibits the release of IFN-α and IL-6 . In Vitro ODN 2088 (0.01, 0.1, 1, 10 μM; 48 h) shows no cytotoxic for for human PBMCs. ODN 2088 (0.01, 0.1, 1, 10 μM; 24 h) inhibits the release of IFN-α in CpG-ODN 2216 (3 μM) and TLR7-ligand RNA-ORN 22075 (5 μM) stimulated human PBMCs. ODN 2088 (0.01, 0.1, 1, 10 μM; 48 h) hardly inhibits the IL-6 release stimulated with CpG-ODN 2006 (100 nM) but inhibits the IL-6 release stimulated with imiquimod (5 μg/ml) in human PBMCs. ODN 2088 (0.1, 1, 10 μM; 24 h) hardly inhibits IL-6 release by B-cells stimulated with CpG-DNA 2006 (100 nM) but inhibits the IL-6 release by imiquimod (5 μg/ml) stimulated human B-cells. ODN 2088 (1, 10 μM; 48 h) increases the expression of CD86 and HLA-DR in the absence of CpG-ODN 2006 or imiquimod in CD20 + B-cells. ODN 2088 presumably impairs TLR9-induced signaling induces by CpG-ODNs by competitive binding to the C-terminal fragment of TLR9. ODN 2088 (0.001, 0.01, 0.1, 1, 10 μM; 24 h) inhibits the TNF-α secretion in a dose-dependent manner in CpG-ODN 1826 (100 nM) stimulated BMDMs and shows weekly inhibits when stimulated by the TLR7-agonist imiquimod. ODN 2088 (10 μM) stimulates B cells to proliferate. MCE has not independently confirmed the accuracy of these methods. They are for reference only. Cell Cytotoxicity AssayCell Line: Human PBMCs Concentration: 0.01, 0.1, 1, 10 μM Incubation Time: 48 h Result: Showed no cytotoxic for for human PBMCs. Form:Solid