Tumor cell membrane potential

Tumor cell membrane potential refers to the electrical voltage difference across the plasma membrane specifically in cancer cells. This is not a single molecular entity but rather a dynamic physiological property determined by the coordinated activity of multiple transmembrane proteins—primarily various types of ion channels (e.g., potassium and sodium), pumps, and transporters. In tumor cells, alterations in this bioelectric state are closely linked to key aspects of cancer biology: In cancer cells, depolarization (a less negative membrane potential) promotes uncontrolled growth by facilitating DNA synthesis and mitosis during specific phases of the cell cycle. This depolarized state also enhances nutrient uptake and growth factor signaling through pathways such as MAPK and PI3K/Akt.[1] Furthermore, changes in membrane potential influence apoptosis resistance—a hallmark feature enabling tumor survival—and play critical roles in migration/invasion during metastasis.[1][4] The "tumor cell membrane potential" is therefore best understood as an emergent property reflecting complex regulation by multiple molecular targets rather than being itself a direct druggable target like an individual receptor or enzyme. There is something incorrect about considering "tumor cell membrane potential" as a canonical therapeutic target because it does not refer to any single molecule/protein/gene product but instead describes a collective electrophysiological characteristic modulated by many different molecules.[3]

Other names

Membrane potential in tumor cellsCancer cell membrane potentialTumor bioelectric state