1507930-54-2

TAT-Gap19, a Cx mimetic peptide, is a specific connexin43 hemichannel (Cx43 HC) inhibitor. TAT-Gap19 does not inhibits the corresponding Cx43 GJCs. TAT-Gap19 traverses the blood-brain barrier and alleviate liver fibrosis in mice[1][2][3].

TAT-Gap19 is a cell penetrant analog of a connexin 43 (Cx43) hemichannels selective blocker Gap19. TAT-Gap19 inhibits TAT-Gap19 in mice brain without affecting gap junction channels.

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[1] Verónica Abudara, et al. The connexin43 mimetic peptide Gap19 inhibits hemichannels without altering gap junctional communication in astrocytes. Front Cell Neurosci. 2014 Oct 21;8:306. DOI:10.3389/fncel.2014.00306
[2] Sara Crespo Yanguas, et al. TAT-Gap19 and Carbenoxolone Alleviate Liver Fibrosis in Mice. Int J Mol Sci. 2018 Mar 12;19(3):817. DOI:10.3390/ijms19030817
[3] Laura Walrave, et al. Inhibition of astroglial connexin43 hemichannels with TAT-Gap19 exerts anticonvulsant effects in rodents. Glia. 2018 Aug;66(8):1788-1804. DOI:10.1002/glia.23341