Biochem/physiol Actions
Potent and selective toll-like receptor 8 (TLR8) agonist that augments the lytic function of NK cells and enhances antibody-dependent cellular cytotoxicity.
Motolimod (VTX-2337) is a potent and selective human toll-like receptor 8 (TLR8) agonist (EC50 = 100 nM; no murine TLR8-stimulating potenty) with greatly reduced TLR7 potency (EC50 >30 µM) and little activity toward TLR3/4/5/8. Motolimod induces proinflammatory mediators production in huaman PBMCs (TNFα/IL12 EC50 = 140/120 nM) by stimulating TLR8-expressing monocytes and mDCs, but not non-TLR8-expressing pDCs. Motolimod augments the lytic function of NK cells and enhances antibody-dependent cellular cytotoxicity (ADCC).