Chloride ion transport

**Chloride ion transport** is a fundamental physiological process mediated by a diverse set of membrane proteins, including chloride channels (such as ClC family and CFTR), exchangers, and co-transporters. These proteins regulate intracellular and extracellular chloride ion concentrations, participate in setting membrane potentials, maintaining osmotic and acid–base balance, and coordinating other key cellular processes—including fluid secretion and neuronal excitability. Defects in chloride transport mechanisms underlie several human diseases, notably cystic fibrosis and inherited channelopathies such as myotonia congenita and Bartter’s syndrome. Many chloride transporters and channels are considered therapeutic targets[1][2][4][7]. Drug development has focused on specific molecular entities (e.g., CFTR correctors/potentiators) to treat related disorders. For structured, target-specific pharmacology, replace "Chloride ion transport" with the canonical names of chloride transport proteins (such as "Cystic fibrosis transmembrane conductance regulator" for CFTR, "Chloride channel protein 1" for ClC-1, etc.)[4][7].

Other names

Chloride channelChloride transporterClC family (for ClC channels and transporters)CFTR (Cystic fibrosis transmembrane conductance regulator)GABA_A receptor (chloride-permeable channel)NKCC1KCC2

Channel activation or potentiation Channel blockade or inhibition Transport modulation (potentiation/inhibition of co-transporters or exchangers) Corrector/potentiator action (as with CFTR drugs)