Defective CFTR increases synthesis and mass of sphingolipids that modulate membrane composition and lipid signaling.

Abstract excerpt

Cystic fibrosis (CF) is caused by mutations in the CF transmembrane conductance regulator (CFTR) that affect protein structure and channel function. CFTR, localized in the apical membrane within cholesterol and sphingomyelin rich regions, is an ABC transporter that functions as a chloride channel. Here, we report that expression of defective CFTR (DeltaF508CFTR or decreased CFTR) in human lung epithelial cell...

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