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  • Title: New insights into the role and mechanism of Wnt/β-catenin signalling in kidney fibrosis.
    Author: Zuo Y, Liu Y.
    Journal: Nephrology (Carlton); 2018 Oct; 23 Suppl 4():38-43. PubMed ID: 30298654.
    Abstract:
    Wnt/β-catenin is an evolutionarily conserved, developmental signalling pathway that regulates embryogenesis, injury repair and pathogenesis of human diseases. Dysregulated activation of Wnt/β-catenin is associated with the development and progression of renal fibrotic lesions after injury. Wnt are induced and β-catenin is activated in various models of experimental chronic kidney disease (CKD) and in human nephropathies. Recent findings indicate that pro(renin) receptor is an amplifier of Wnt/β-catenin by acting as a downstream target and an obligatory component for its signal transduction. Genetic blockade of Wnt secretion in a cell type-specific manner uncovers renal tubular epithelium as the major source of Wnt ligands in CKD. Wnt/β-catenin controls the expression of a wide variety of downstream mediators implicated in kidney fibrosis, such as fibronectin, Snail1, matrix metalloproteinase-7, hepatocyte growth factor and various components of the renin-angiotensin system. Targeted inhibition of Wnt/β-catenin is able to ameliorate kidney fibrotic lesions in pre-clinical settings. In this review, we summarize recent advances in our understanding of the regulation, signal transduction, role and mechanisms of Wnt/β-catenin signalling in the pathogenesis of kidney fibrosis. We also discuss the therapeutic potential of targeting this pathway for the treatment of fibrotic CKD.
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