Membrane lipid bilayer

The membrane lipid bilayer is a fundamental biological structure composed of two layers of amphipathic phospholipids that forms the primary barrier of cells and organelles (StatPearls, 2023). Beyond its structural role, the bilayer serves as a dynamic platform for signal transduction, protein recruitment, and cellular communication (Nature Reviews Molecular Cell Biology, 2008). In various diseases, such as cancer and neurodegeneration, the lipid composition and physical properties of the membrane are significantly altered, affecting the function of embedded proteins (Journal of Cellular and Molecular Medicine, 2015). Therapeutic intervention, known as Membrane Lipid Therapy (MLT), involves using molecules to modify these lipid environments to restore normal signaling or selectively destroy pathogens (Trends in Molecular Medicine, 2017). For example, certain antibiotics like Polymyxin B and antifungals like Amphotericin B disrupt the integrity of microbial membranes to induce cell death (Clinical Microbiology Reviews, 2017). Novel synthetic lipids, such as 2-hydroxyoleic acid, are also being developed to regulate oncogenic signaling pathways by altering membrane fluidity and organization (British Journal of Cancer, 2011).

Other names

Phospholipid bilayerCell membranePlasma membraneLipid membraneBiological membrane

Drugs targeting the membrane lipid bilayer typically act by altering membrane physical properties such as fluidity and thickness, forming transmembrane pores to induce leakage of cellular contents, or modulating the recruitment and activity of membrane-bound signaling proteins through changes in lipid composition (Journal of Cellular and Molecular Medicine, 2015; Nature Reviews Drug Discovery, 2008).