Cellular membranes and organelle components in cancer cells

Cellular membranes and organelle components in cancer cells represent a broad class of structural targets including the plasma membrane, mitochondria, lysosomes, and the endoplasmic reticulum (NIH, 2021). In malignant cells, these membranes often exhibit distinct biochemical properties, such as altered lipid asymmetry, increased fluidity, and the externalization of phosphatidylserine on the outer leaflet (PubMed, PMID: 28633495). These biophysical differences provide a basis for therapeutic intervention, where drugs are designed to selectively disrupt the structural integrity or functional signaling of cancer cell membranes. For instance, alkyl-lysophospholipids like edelfosine accumulate in cell membranes to trigger apoptosis, while "mitocans" specifically destabilize mitochondrial membranes to release pro-apoptotic factors (PubMed, PMID: 22507573). Lysosomal membrane permeabilization is another targeted approach that utilizes the acidic environment of cancer cells to trigger the release of cathepsins into the cytosol. Targeting these components is a strategy to bypass traditional drug resistance mechanisms that often involve protein-based targets. However, achieving high selectivity remains a significant challenge to avoid damage to the membranes of healthy tissues, such as red blood cells or vital organ membranes.

Other names

Cancer cell membranesTumor cell lipid bilayerOrganellar membranesMitochondrial membranesLysosomal membranesEndoplasmic reticulum membranes

Induction of membrane permeabilization, disruption of lipid bilayer integrity, and modulation of organelle-specific signaling pathways.