Effects of miR-22 on viability, migration, invasion and apoptosis in retinoblastoma Y79 cells by targeting high-mobility group box 1
Journal Title: International Journal of Ophthalmology - Year 2018, Vol 11, Issue 10
Abstract
"AIM: To explore the effect of miR-22 on viability, migration, invasion and apoptosis in retinoblastoma (RB) Y79 cells and to further detect the potential mechanism. METHODS: Plasmids were constructed to change the expression level of miR-22 in Y79 cells. Real-time reverse transcription polymerase chain reaction (RT-PCR) was conducted to test the expression level of miR-22. After changing the expression of miR-22, the mRNA and protein levels of high-mobility group box 1 (HMGB1) were investigated using RT-PCR and Western blotting. The effect of miR-22 on viability was analyzed by using cell counting kit-8 (CCK-8) assay and the effect on apoptosis was detected by the flow cytometry. Wound healing migration assay and Transwell invasion assay were used to detect the effects of miR-22 on cell motility. RESULTS: miR-22 inhibited viability, migration and invasion, while promoting apoptosis, in RB Y79 cells. The inhibition rate of miR-22 overexpression group at 12, 24, 48h was 11.71%±2.54%, 21.36%±1.39% and 29.44%±1.15%, respectively. Cellular apoptosis was higher in miR-22 overexpression group (17.00%±0.39%) compared with negative control (4.38%±0.38%). miR-22 negatively mediated the expression of HMGB1. Furthermore, decreased HMGB1 significantly attenuated viability, migration and invasion, while promoting apoptosis. Enforced expression of HMGB1 partially rescued the effects of miR-22 overexpression on cell viability, migration, invasion and apoptosis. Moreover, the phosphorylated protein kinase B (p-AKT) was significantly downregulated in the HMGB1 shRNA group and miR-22 overexpression group and elevated in the HMGB1 overexpression group compared with the normal control. CONCLUSION: miR-22 inhibites viability, migration and invasion and increases apoptosis in Y79 cells by targeting HMGB1. These findings may provide a therapeutic strategy for RB."
Authors and Affiliations
Li-Ming Tao
Keywords
Related Articles
- EP ID EP477354
- DOI 10.18240/ijo.2018.10.05
- Views 39
- Downloads 0
Disorganization of the retinal inner layers as a prognostic factor in eyes with central retinal artery occlusion
"AIM: To evaluate baseline foveal disorganisation of retinal inner layers (DRIL) as a prognostic factor in eyes with central retinal artery occlusion (CRAO). METHODS: Twenty-eight CRAO patients who were followed-up betwe...
Abnormal resting-state functional network centrality in patients with high myopia: evidence from a voxel-wise degree centrality analysis
"AIM: To investigate the functional networks underlying the brain-activity changes of patients with high myopia using the voxel-wise degree centrality (DC) method. METHODS: In total, 38 patients with high myopia (HM) (17...
Effect of etanercept on post-traumatic proliferative vitreoretinopathy
"AIM: To evaluate the safety and efficacy of intravitreal etanercept in the inhibiting of proliferative vitreoretinopathy (PVR) in a model of penetrating ocular injury. METHODS: Penetrating ocular injury on the retina of...
Analysis of the clinical characteristics and refraction state in premature infants: a 10-year retrospective analysis
"AIM: To report the visual outcomes and refractive status in premature infants with and without retinopathy of prematurity (ROP) who were or not treated. METHODS: The clinical records of all premature infants with or wit...
The association between retinal vasculature changes and stroke: a literature review and Meta-analysis
"AIM: To determine the association between retinal vasculature changes and stroke. METHODS: MEDLINE and EMBASE were searched for relevant human studies to September 2015 that investigated the association between retinal...