Microbial membrane lipids

Microbial membrane lipids are essential structural and functional components of bacterial and fungal cells, serving as the primary barrier between the cytoplasm and the external environment (Zhang & Rock, 2008, PubMed: 18235436). In fungi, ergosterol is the principal sterol, whereas bacteria utilize a variety of phospholipids such as phosphatidylglycerol and specialized lipid-linked precursors like Lipid II for cell wall synthesis (Münch & Sahl, 2015, PubMed: 26075424). These lipids are critical for maintaining membrane fluidity, organizing membrane proteins, and facilitating cell division. Therapeutic agents target these lipids to achieve selective toxicity; for instance, polyene antifungals like Amphotericin B bind to ergosterol to create lethal pores (Gray et al., 2012, PubMed: 22461644), while lipopeptide antibiotics like daptomycin insert into bacterial membranes to cause rapid depolarization (Humphries et al., 2013, PubMed: 23529766). Because these lipids are integral to the physical survival of the pathogen, they represent robust targets for treating multi-drug resistant infections, although safety concerns such as nephrotoxicity can arise due to off-target effects on host membranes (Falagas & Kasiakou, 2005, PubMed: 15650005).

Other names

Bacterial and fungal membrane lipidsBacterial cell membrane lipidsFungal cell membrane lipidsMicrobial cell membraneErgosterolLipid IIPhosphatidylglycerol

Direct binding to membrane lipids leading to pore formation, membrane depolarization, or sequestration of essential cell wall precursors.