ABSTRACT
@#【Objective】To clarify the role of neuro-cadherin（N-cadherin）in epithelial-mesenchymal transition of diabetic retinopathy，and to investigate the effect of N-cadherin on proliferation ，migration and invasion of retinal pigment epithelial cells.【Methods】Cells were turned into over-expressed or silenced N-cadherin by using Ad-N-cadherin （Ad-N-cad）and Ad-si N-cadherin（si N-cad）. Glucose（25 mmol/L）was used to simulate high glucose（HG）condi⁃ tions. Cell Counting Kit-8（CCK-8）kit was used to detect cell proliferation. Transwell chamber was used to detect the vertical migration and invasion of cells.【Results】Transwell assay showed N-cadherin over-expression increased the num⁃ ber of cells migrated to the transwell subventricular chamber. The difference was statistically significant（P < 0.05）. The number of ARPE19 cells that migrated to or invaded the transwell subventricular chamber increased after high glucose treatment. N-cadherin knockdown suppressed high glucose-induced migration and invasion（P < 0.05）. CCK8 results showed N-cadherin knockdown could inhibit cell proliferation induced by high glucose（P < 0.05）.【Conclusion】N-cad⁃ herin may promote cell migration，and down-regulation of N-cadherin can inhibit cell proliferation，migration and inva⁃ sion induced by high glucose.