Figure 2.
Nod2 is an intracellular MDP sensor. Monocytes/macrophages activation by L-MTP-PE is mediated via Nod2. L-MTP-PE is selectively phagocyted by monocytes and macrophages after intravenous administration. L-MTP-PE is released into the cytosol and degraded to MDP. Nod2 binding to MDP activates NF-κB and influences the innate immune response. Abbreviations: Nod2; nucleotide-binding oligomerization domain 2, MDP; muramyl dipeptide, L-MTP-PE; liposomal muramyl tripeptide phosphatidyl ethanolamine, NF-κB; nuclear factor-kappa B.