Tumor Cell Plasma Membrane (PM)

The tumor cell plasma membrane is the outermost boundary of cancer cells, composed primarily of a lipid bilayer interspersed with proteins and carbohydrates. It serves as a dynamic barrier that regulates the transport of molecules in and out of the cytoplasm, mediates cell signaling, and interacts with the extracellular matrix (ECM) and tumor microenvironment. The composition and organization of this membrane are distinct from those in normal cells, contributing to hallmark cancer behaviors such as increased proliferation, resistance to apoptosis, metastasis, and drug resistance. Specific components like overexpressed surface proteins and altered lipid composition are exploited for targeted therapies and drug delivery.

Other names

Cancer Cell Plasma MembraneTumor Cell Membrane

Varies depending on the specific target within the membrane (e.g., receptor antagonists, inhibitors of efflux pumps, drugs modifying lipid composition). Antibody-drug conjugates bind to specific antigens and deliver cytotoxic payloads.