Biological lipid membrane (BLM)

Biological lipid membranes are fundamental supramolecular assemblies composed of a phospholipid bilayer that serves as the primary structural boundary for all living cells and their internal organelles (Alberts et al., 2002, Molecular Biology of the Cell). These membranes are not merely passive barriers; they are dynamic environments that facilitate essential processes such as selective ion transport, signal transduction via embedded receptors, and cell-to-cell communication (Nature Education, 2014). In pharmacology, the lipid membrane is a validated therapeutic target, particularly for treating recalcitrant bacterial and fungal infections. Drugs like daptomycin and amphotericin B exert their effects by binding to specific membrane components, leading to pore formation, ion leakage, and eventual cell lysis (StatPearls, 2023). Furthermore, alterations in membrane lipid composition and fluidity are associated with various pathologies, including cancer and neurodegenerative disorders, making membrane modulation an emerging area for drug development (PubMed, PMID: 30245144). However, the high degree of structural similarity between pathogen and host membranes poses a significant challenge for achieving therapeutic indices that avoid systemic toxicity (NIH, 2021).

Other names

Cell membranePlasma membranePhospholipid bilayerCytoplasmic membraneUnit membrane

Drugs targeting biological lipid membranes typically act through physical disruption of the bilayer integrity, including pore formation, depolarization of the membrane potential, or detergent-like solubilization of lipid components, leading to cytoplasmic leakage and cell death (StatPearls, 2023; PubMed, PMID: 30245144).