Tumor cell plasma membrane components

The tumor cell plasma membrane is a dynamic and heterogeneous structure composed of a lipid bilayer interspersed with proteins and carbohydrates that defines the boundary of the malignant cell. It serves as the primary site for signal transduction, nutrient acquisition, and interaction with the tumor microenvironment, often undergoing significant remodeling to support rapid proliferation and metastasis (Ferreira et al., 2015, PubMed: 25610377). Distinctive features of the tumor membrane include altered lipid asymmetry—such as the externalization of phosphatidylserine—and changes in membrane fluidity and cholesterol content (Escribá et al., 2015, PubMed: 25846151). These biophysical and biochemical alterations are exploited by therapeutic strategies like Membrane Lipid Therapy (MLT) and the use of oncolytic peptides, which aim to disrupt membrane integrity or modulate signaling pathways (Riedl et al., 2011, PubMed: 21683632). While specific membrane proteins are common targets, the membrane as a collective entity represents a broader target for agents designed to overcome conventional drug resistance. Targeting these components allows for the development of drugs that can selectively induce apoptosis or enhance the delivery of other chemotherapeutic agents. However, the high degree of similarity between tumor and healthy cell membranes poses a significant challenge for achieving high therapeutic indices.

Other names

Cancer cell membraneNeoplastic plasma membraneTumor cell surfaceMalignant cell membrane

Modulation of membrane lipid composition, induction of membrane pore formation, and targeting of surface-exposed phospholipids to trigger immune responses or apoptosis (Escribá et al., 2015, PubMed: 25846151; Riedl et al., 2011, PubMed: 21683632).