TAT-Gap19 TFA, a Cx mimetic peptide, is a specific connexin43 hemichannel (Cx43 HC) inhibitor. TAT-Gap19 TFA does not inhibits the corresponding Cx43 GJCs. TAT-Gap19 TFA traverses the blood-brain barrier and alleviate liver fibrosis in mice[2].In Vivo: A single injection of TAT-Gap19 TFA (i.v. via the tail vein; 55 mg/kg) produces significant immune signal in the brain 24 h later in 4 months old C57Bl6 male mice.
TAT-Gap19 TFA (1 mg/kg/day; an osmotic pump implanted in the peritoneal cavity; Two weeks) shows significantly decreased collagen deposition, as well as lowed amounts of α-SMA-positive cells area in mice subjected to treatment with 100-200 mg thioacetamide (TAA)/kg body weight for eight weeks[2].