Bacterial lipids

Bacterial lipids are essential structural and functional components of the bacterial cell envelope, including phospholipids, lipopolysaccharides (LPS), and lipid-linked cell wall precursors (Sohlenkamp & Geiger, 2016, "Bacterial membrane lipids: diversity in structures and pathways"). These molecules are critical for maintaining the selective permeability barrier and membrane potential necessary for bacterial survival. In Gram-negative bacteria, the lipid A portion of LPS serves as a major structural element and a potent endotoxin that triggers host immune responses, often leading to sepsis (Velkov et al., 2013, "Pharmacology of polymyxins"). Bacterial lipids are highly effective therapeutic targets because their chemical compositions—such as the presence of phosphatidylglycerol and the absence of cholesterol—differ significantly from eukaryotic membranes. Drugs like daptomycin and polymyxins exploit these differences to selectively disrupt bacterial membranes, while others like teixobactin bind to lipid-linked intermediates like Lipid II to inhibit peptidoglycan synthesis (Ling et al., 2015, "A new antibiotic kills pathogens without detectable resistance").

Other names

Bacterial membrane lipidsBacterial cell envelope lipidsMicrobial lipidsBacterial phospholipids

Drugs targeting bacterial lipids act by binding to specific lipid species to disrupt membrane structural integrity, induce pore formation leading to ion leakage and depolarization, or sequester lipid-anchored precursors to halt cell wall biosynthesis (Müller et al., 2016; Ling et al., 2015).