Wednesday, August 29, 2018

TREK-1 potassium channel in heart health: From Drosophila genetic screen to mammalian follow-up studies

Abraham DM, Lee TE, Watson LJ, Mao L, Chandok GS, Wang HG, Frangakis S, Pitt GS, Shah SH, Wolf MJ, Rockman HA. The two-pore-domain potassium channel TREK-1 mediates cardiac fibrosis and diastolic dysfunction. J Clin Invest. 2018 Aug 28. PMID: 30153110.

From the abstract: "Cardiac two pore domain potassium channels (K2P) exist in organisms from Drosophila to humans ... We identified a K2P gene, CG8713 (sandman), in a Drosophila genetic screen and show that sandman is critical to cardiac function. Mice lacking an ortholog of sandman, TWIK related potassium channel (TREK-1 or Kcnk2), exhibit exaggerated pressure overload induced concentric hypertrophy and alterations in fetal gene expression ... These findings indicate a central role for cardiac fibroblast TREK-1 in the pathogenesis of pressure overload-induced cardiac dysfunction and serve as a conceptual basis for its inhibition for as a potential therapy."

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