AMP-activated protein kinase fortifies epithelial tight junctions during energetic stress via its effector GIV/Girdin
Loss of epithelial polarity impacts organ development and function; it is also oncogenic.AMPK, a key sensor of metabolic stress stabilizes cell-cell junctions and maintains epithelial polarity; its activation by Metformin protects the epithelial barrier against stress and suppresses tumorigenesis.How AMPK protects the epithelium remains unknown.Her