Tissue freezing (cellular destruction process)

Tissue freezing causing cellular destruction describes the biological process by which exposure of tissues to freezing temperatures—such as those used in cryoablation or cryosurgery—results in cell death and tissue necrosis. This is not a molecular target, receptor, or protein, but rather a physical process used therapeutically, for example, to destroy tumors. Destroying tissue by freezing involves multiple overlapping mechanisms: formation of extracellular and intracellular ice crystals, osmotic dehydration, mechanical disruption of membranes, protein denaturation, and vascular injury that deprives tissue of blood supply. At low temperatures, ice formation can cause cellular dehydration, osmotic damage, and physical rupture; rapid freezing favors lethal intracellular ice crystal formation, while thawing and rewarming can further destabilize cell structures or cause excessive swelling and rupture. These processes culminate in the destruction of malignant or diseased tissue but are not targeted at a single molecule or biological pathway[1][2][3][4][5].

Other names

Tissue cryoablationcryosurgerycryotherapy (cell destruction by freezing)

Not applicable (process-based, not molecular target)