SMU127 is an agonist of the toll-like receptor 1 2 (TLR1 2) heterodimer.1It induces NF-κB signaling in cells expressing human TLR2 (EC50= 0.55 μM) but not cells expressing human TLR3, -4, -5, -7, or -8 when used at concentrations ranging from 0.1 to 100 μM. SMU127 induces the production of TNF-α in isolated human peripheral blood mononuclear cells (PBMCs) when used at concentrations ranging from 0.01 to 1 μM.In vivo, SMU127 (0.1 mg animal) reduces tumor volume in a 4T1 murine mammary carcinoma model. 1.Chen, Z., Cen, X., Yang, J., et al.Structure-based discovery of a specific TLR1-TLR2 small molecule agonist from the ZINC drug library databaseChem. Commun. (Camb.)54(81)11411-11414(2018)
Diprovocim-1 is an agonist of the toll-like receptor 1/2 heterodimer.1It induces TNF-α release in THP-1 cells (EC50= 110 pM), an effect that can be inhibited by anti-TLR1 or anti-TLR2 antibodies. Diprovocim-1 (10 mg/kg) increases the production of ovalbumin-specific IgG1 in wild-type, but notTLR2-/-, mice sensitized to ovalbumin.2It also enhances anti-PD-L1 antibody-induced activation of cytotoxic T lymphocytes, reduction of tumor growth, and increases in survival in a B16/F10 murine melanoma model. 1.Morin, M.D., Wang, Y., Jones, B.T., et al.Diprovocims: A new and exceptionally potent class of toll-like receptor agonistsJ. Am. Chem. Soc.140(43)14440-14454(2018) 2.Wang, Y., Su, L., Morin, M.D., et al.Adjuvant effect of the novel TLR1/TLR2 agonist Diprovocim synergizes with anti-PD-L1 to eliminate melanoma in miceProc. Natl. Acad. Sci. U.S.A.115(37)E8698-E8706(2018)