Diprovocim is a potent human and mouse Toll-like receptor (TLR)1/TLR2 agonist, which exhibited an EC50 of 110 pM in human THP-1 cells and 1.3 nM in primary mouse peritoneal macrophages. Diprovocim activates downstream MAPK and NF-κB signaling pathway.
Diprovocim (5 nM in THP-1 and 500 nM in mouse peritoneal macrophage; 15-120 mins) induces phosphorylation of IKKα, IKKβ, p38, JNK, and ERK, as well as degradation of IκBα in THP-1 cells and mouse peritoneal macrophages.
In mice, Diprovocim-adjuvanted ovalbumin immunization promoted antigen-specific humoral and CTL responses and synergized with anti-PD-L1 treatment to inhibit tumor growth, generating long-term antitumor memory, curing or prolonging survival of mice engrafted with the murine melanoma B16-OVA. Diprovocim induced greater frequencies of tumor-infiltrating leukocytes than alum, of which CD8 T cells were necessary for the antitumor effect of immunization plus anti-PD-L1 treatment.
| Molecular Weight | 909.08 |
| Formula | C56H56N6O6 |
| CAS Number | 2170867-89-5 |
| Solubility (25°C) | DMSO 20 mg/mL (ultrasonic and warming) |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
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