PET-lipid A

PET-lipid A is a synthetic analog of Lipid A, the bioactive and endotoxic component of Gram-negative bacterial lipopolysaccharide (LPS). It is constructed using a pentaerythritol (PET) core as a scaffold to display lipid chains and phosphate groups in a spatial orientation that mimics the architecture of natural Lipid A. Functionally, PET-lipid A acts as a potent competitive antagonist of the Toll-like receptor 4 (TLR4)/MD-2 complex. By binding with high affinity to the hydrophobic pocket of the Myeloid Differentiation factor 2 (MD-2) co-receptor, it prevents the recruitment and dimerization of TLR4 induced by bacterial LPS, thereby inhibiting the pro-inflammatory signaling cascade. Developed primarily as a research tool and therapeutic candidate for inflammatory disorders, PET-lipid A has been investigated in preclinical models for its potential to treat sepsis, acute lung injury, and chronic neuropathic pain by suppressing the overproduction of pro-inflammatory cytokines.

Other names

Pentaerythritol-lipid APentaerythritol tetrakis-lipid APentaerythritol-based lipid A analog