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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 Int+J+Clin+Exp+Med 2015 ; 8 (9): 15155-63 Nephropedia Template TP
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Vitamin C inhibit the proliferation, migration and epithelial-mesenchymal-transition of lens epithelial cells by destabilizing HIF-1? #MMPMID26628999
Zhao L; Quan Y; Wang J; Wang F; Zheng Y; Zhou A
Int J Clin Exp Med 2015[]; 8 (9): 15155-63 PMID26628999show ga
Posterior capsular opacification (PCO), the main complication of cataract surgery, is mainly caused by the proliferation, migration, and epithelial-mesenchymal transition (EMT) of the residual lens epithelial cells (LECs).Vitamin C was reported to reduce the risk of forming a cataract. However, there has been no study showing the association between vitamin C and PCO. In this study, we found that vitamin C could inhibit the migration and proliferation of human lens epithelial cells. We also found that vitamin C could increase the proline hydroxylation of HIF-1? and reduce the activity of HIF-1?. Moreover, vitamin C could not inhibit the activity of proline-mutant HIF-1? (402/564). Overexpression of wild-type HIF-1? or proline-mutant HIF-1? was found to increase the proliferation and migration of human lens epithelial cells. Differently, vitamin C could inhibit the proliferation and migration in wild-type HIF-1?-overexpressing lens epithelial cells but not the proline-mutant HIF-1?-overexpressing cells. Additionally, vitamin C was also found to inhibit the expression of EMT transcription factors TWIST. We then found that vitamin C could repress the EMT phenotypes induced by the overexpression of wild-type HIF-1? but not the proline-mutant HIF-1?. These results provide evidence that vitamin C plays a role in the repression of proliferation, migration, and EMT of human lens epithelial cells by destabilizing HIF-1?.