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Deprecated: Implicit conversion from float 251.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 BMB+Rep 2015 ; 48 (9): 525-30 Nephropedia Template TP
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Wnt5a attenuates the pathogenic effects of the Wnt/?-catenin pathway in human retinal pigment epithelial cells via down-regulating ?-catenin and Snail #MMPMID26246285
Kim JH; Park S; Chung H; Oh S
BMB Rep 2015[Sep]; 48 (9): 525-30 PMID26246285show ga
Activation of the Wnt/?-catenin pathway plays a pathogenic role in age-related macular degeneration (AMD) and is thus a potential target for the development of therapeutics for this disease. Here, we demonstrated that Wnt5a antagonized ?-catenin response transcription (CRT) induced with Wnt3a by promoting ?-catenin phosphorylation at Ser33/Ser37/Thr41 and its subsequent degradation in human retinal pigment epithelial (RPE) cells. Wnt5a decreased the levels of vascular endothelial growth factor (VEGF), tumor necrosis factor-?(TNF-?), and nuclear factor-?B (NF-?B), which was up-regulated by Wnt3a. Furthermore, Wnt5a increased E-cadherin expression and decreased cell migration by down-regulating Snail expression, thereby abrogating the Wnt3a-induced epithelial-mesenchymal transition (EMT) in human RPE cells. Our findings suggest that Wnt5a suppresses the pathogenic effects of canonical Wnt signaling in human RPE cells by promoting ?-catenin phosphorylation and degradation. Therefore, Wnt5a has significant therapeutic potential for the treatment of AMD. [BMB Reports 2015; 48(9): 525-530]