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2015 ; 8
(9
): 15155-63
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gab.com Text
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English Wikipedia
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
PMID26628999
show 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?.