Biological membrane (Cellular and Mitochondrial)

Biological membranes, including both cellular (plasma) and mitochondrial membranes, are critical lipid bilayer structures that define cellular boundaries and internal compartments. The plasma membrane regulates the entry and exit of solutes, while mitochondrial membranes are the site of the electron transport chain and play a central role in energy metabolism and the regulation of programmed cell death (Alberts et al., Molecular Biology of the Cell). Lipophilic drugs often target these membranes due to their hydrophobic nature, which allows them to partition into the lipid core, potentially disrupting membrane integrity or function (Journal of Pharmaceutical Sciences). In therapeutic contexts, certain antibiotics and antifungals target microbial membranes to induce lysis, while 'mitocans' target mitochondrial membranes in cancer cells to trigger apoptosis by altering membrane potential or inducing the release of pro-apoptotic factors (Frontiers in Oncology). However, the lack of high specificity between host and pathogen or healthy and diseased membranes often presents significant safety challenges, including systemic toxicity and hemolysis (Nature Reviews Microbiology).

Other names

Lipid bilayerPlasma membraneMitochondrial inner membraneMitochondrial outer membraneCytoplasmic membrane

Membrane disruption, pore formation, uncoupling of oxidative phosphorylation, alteration of membrane fluidity, and induction of mitochondrial outer membrane permeabilization (MOMP).