Cellular membranes and organellar compartments

Cellular membranes and organellar compartments encompass the lipid bilayers and internal structures, such as the mitochondria, endoplasmic reticulum, and lysosomes, that define the spatial organization of cells (Alberts et al., Molecular Biology of the Cell). These structures are fundamental to life, providing selective permeability, facilitating signal transduction, and maintaining the electrochemical gradients necessary for ATP synthesis and cellular homeostasis (NIH, 2023). While typically viewed as structural entities, they serve as the site of action for several classes of drugs, including polyene antifungals like Amphotericin B, which creates pores in fungal membranes, and lipopeptide antibiotics like Daptomycin, which disrupts bacterial membrane potential (StatPearls, 2023; PubMed, 2022). However, this entry is generally considered too broad to be a specific therapeutic target, as most modern drug discovery focuses on individual proteins embedded within these membranes rather than the membrane itself. Disrupting these compartments non-specifically often leads to significant safety concerns, such as nephrotoxicity or hemolysis, due to the lack of selectivity between host and pathogen membranes (PubMed, 2021). Organellar compartments also play critical roles in diseases like lysosomal storage disorders and mitochondrial myopathies, where structural or functional integrity is compromised (NIH, 2022).

Other names

Biological membranesLipid bilayersCytomembranesIntracellular compartmentsOrganelle membranes

Drugs targeting these structures typically act by disrupting membrane integrity, forming transmembrane pores, or altering physical properties such as fluidity and electrochemical gradients to induce cell death (StatPearls, 2023; PubMed, 2022).