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Di Y, Wang Y, Wang YX, Wang X, Ma Y, Nie QZ. Maternally expressed gene 3 regulates retinal neovascularization in retinopathy of prematurity. Neural Regen Res 2021; 17:1364-1368. [PMID: 34782583 PMCID: PMC8643049 DOI: 10.4103/1673-5374.327358] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The mouse model of oxygen induced retinopathy is suitable for the study of various retinal neovascularization diseases, including retinopathy of prematurity. The maternally expressed gene 3 (MEG3) has been demonstrated to have an inhibitory effect on diabetic retinopathy. In this study, we investigated the role of MEG3 overexpression in oxygen-induced retinopathy in mice. The results showed that MEG3 overexpression effectively inhibited the production of retinal neovascularization in oxygen-induced retinopathy mice. It acts by down-regulating the expression of phosphoinositide 3-kinase, serine/threonine kinase, and vascular endothelial growth factor and pro-inflammatory factors. MEG3 overexpression lentivirus has a future as a new method for the clinical treatment of retinopathy of prematurity. The animal experiments were approved by the Animal Ethics Committee of Shengjing Hospital of China Medical University, China (approval No. 2016PS074K) on February 25, 2016.
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Affiliation(s)
- Yu Di
- Department of Ophthalmology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Yue Wang
- Department of Ophthalmology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Yue-Xia Wang
- Department of Ophthalmology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Xue Wang
- Department of Ophthalmology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Yuan Ma
- Department of Ophthalmology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Qing-Zhu Nie
- Department of Ophthalmology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
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Xu Y, Lu X, Hu Y, Yang B, Tsui CK, Yu S, Lu L, Liang X. Melatonin attenuated retinal neovascularization and neuroglial dysfunction by inhibition of HIF-1α-VEGF pathway in oxygen-induced retinopathy mice. J Pineal Res 2018; 64:e12473. [PMID: 29411894 DOI: 10.1111/jpi.12473] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Accepted: 01/25/2018] [Indexed: 12/15/2022]
Abstract
Retinopathy of prematurity (ROP) is a retinopathy characterized by retinal neovascularization (RNV) occurring in preterm infants treated with high concentrations of oxygen and may lead to blindness in severe cases. Currently, anti-VEGF therapy is a major treatment for ROP, but it is costly and may cause serious complications. The previous study has demonstrated that melatonin exerted neuroprotective effect against retinal ganglion cell death induced by hypoxia in neonatal rats. However, whether melatonin is anti-angiogenic and neuroglial protective in the progression of ROP remains unknown. Thus, this study was to investigate the effect of melatonin on RNV and neuroglia in the retina of oxygen-induced retinopathy (OIR) mice. The results showed a reduction in retinal vascular leakage in OIR mice after melatonin treatment. Besides, the size of retinal neovascular and avascular areas, the number of preretinal neovascular cell nuclei, and the number of proliferative vascular endothelial cells within the neovascular area were significantly decreased in mice treated with melatonin. After oxygen-induced injury, the density of astrocytes was decreased, accompanied by morphologic and functional changes of astrocytes. Besides, retinal microglia were also activated. Meanwhile, the levels of inflammatory factors were elevated. However, these pathologic processes were all hindered by melatonin treatment. Furthermore, HIF-1α-VEGF pathway was activated in the retina of OIR mice, yet was suppressed in melatonin-treated OIR mice retinas. In conclusion, melatonin prevented pathologic neovascularization, protected neuroglial cells, and exerts anti-inflammation effect via inhibition of HIF-1α-VEGF pathway in OIR retinas, suggesting that melatonin could be a promising therapeutic agent for ROP.
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Affiliation(s)
- Yue Xu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Xi Lu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Yaguang Hu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Boyu Yang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Ching-Kit Tsui
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Shanshan Yu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Lin Lu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Xiaoling Liang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, Guangdong Province, China
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Hu Y, Lu X, Xu Y, Lu L, Yu S, Cheng Q, Yang B, Tsui CK, Ye D, Huang J, Liang X. Salubrinal attenuated retinal neovascularization by inhibiting CHOP-HIF1α-VEGF pathways. Oncotarget 2017; 8:77219-77232. [PMID: 29100382 PMCID: PMC5652775 DOI: 10.18632/oncotarget.20431] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 06/12/2017] [Indexed: 12/30/2022] Open
Abstract
Retinal neovascularization (RNV) related disease is the leading cause of irreversible blindness in the world. The aim of this study is to identify whether salubrinal could attenuate RNV by inhibiting CCAAT/enhancer-binding protein (C/EBP) homologous protein (CHOP)- hypoxia inducible factors 1α (HIF1α) -vascular endothelial growth factor (VEGF) pathways in both mouse retinal microvascular endothelial cells (mRMECs) and oxygen-induced retinopathy (OIR) mouse model. After being treated with salubrinal (20μmol/L) or CHOP-siRNA, mRMECs were exposed to a hypoxia environment. OIR mice were intraperitoneally injected with salubrinal (0.5 mg/kg/day) from P12 to P17. With salubrinal or CHOP-siRNA treatment, the elevated CHOP protein and mRNA levels in hypoxia-induced mRMECs were significantly decreased. HIF1α-VEGF pathways were activated under hypoxia condition, then HIF1α protein was degraded and VEGF secretion was down-regulated after salubrinal or CHOP-siRNA treatment. In OIR mice, the areas of RNV were markedly decreased with salubrinal treatment. Moreover, elevated expressions of CHOP, HIF1α and VEGF in retinas of OIR mice were all reduced after salubrinal treatment. It suggested that salubrinal attenuated RNV in mRMECs and OIR mice by inhibiting CHOP-HIF1α-VEGF pathways and could be a potential therapeutic target for hypoxia-induced retinal microangiopathy.
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Affiliation(s)
- Yaguang Hu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Xi Lu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Yue Xu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Lin Lu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Shanshan Yu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Qiaochu Cheng
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi Province, China
| | - Boyu Yang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Ching-Kit Tsui
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Dan Ye
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Jingjing Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
| | - Xiaoling Liang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510000, Guangdong Province, China
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Secretion of Down Syndrome Critical Region 1 Isoform 4 in Ischemic Retinal Ganglion Cells Displays Anti-Angiogenic Properties Via NFATc1-Dependent Pathway. Mol Neurobiol 2016; 54:6556-6571. [DOI: 10.1007/s12035-016-0092-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 08/30/2016] [Indexed: 10/20/2022]
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Gao X, Wang YS, Li XQ, Hou HY, Su JB, Yao LB, Zhang J. Macrophages promote vasculogenesis of retinal neovascularization in an oxygen-induced retinopathy model in mice. Cell Tissue Res 2016; 364:599-610. [DOI: 10.1007/s00441-015-2353-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 12/16/2015] [Indexed: 01/06/2023]
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Tian LL, Ren B, Gao XW, Luo Y, Cai Y, Zhou K, Du AJ, Zhao Y. Inhibition of retinopathy of prematurity in rat by intravitreal injection of sorafenib. Int J Ophthalmol 2014; 7:198-204. [PMID: 24790858 DOI: 10.3980/j.issn.2222-3959.2014.02.03] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 12/11/2013] [Indexed: 12/23/2022] Open
Abstract
AIM To investigate the effect of intravitreal injection administered sorafenib, a multikinase inhibitor, in a rat model of oxygen-induced retinopathy (OIR). METHODS Seven-day-old Sprague-Dawley rats (n=144) were randomly assigned to six groups. Group A received normal partial oxygen pressure and groups B, C, D, E and F were exposed to hyperoxia (75±2)% from postnatal 7d (P7) to P12 to induce retinopathy of prematurity. The rats in groups C, D, E and F were received intravitreal injections of either vehicle (DMSO) or sorafenib at P12 (5, 20 and 80 µg, respectively). Then they returned to normoxia after P12. The retinas were whole-mounted and imaged with a confocal microscopy. The vascular branching points were counted to quantify neovascularization at P17. Cross-sections of the retina were stained with hematoxylin and eosin (HE). The nuclei of new vessels breaking the internal limiting membrane were counted to quantify the proliferative neovascular response. RESULTS The retinal vessel in groups B and C turned into tortuosity and a great deal of neovascularization were observed. Sorafenib-treated rats had significantly less neovascularization as compared with vehicle-treated and control rats in a dose dependent manner (P<0.05). The number of vascular branching points in A, B, C, D, E and F were 16.50±3.90, 37.44±6.47, 37.08±5.10, 30.80±6.85, 26.08±5.08 and 19.83±3.51, respectively. The number of the nuclei of retinal new vessel in A, B, C, D, E and F were 0.22±0.42, 35.66±4.70, 35.30±4.54, 27.30±4.28, 21.41±3.53, and 7.41±2.87, respectively. There were significant difference between each group (P<0.05) except groups B and C. CONCLUSION In the rat OIR model, sorafenib could inhibit retinal neovascularization in a dose dependent manner.
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Affiliation(s)
- Li-Li Tian
- Medical College of Shihezi University, Shihezi 832000, Xinjiang Uygur Autonomous Region, China ; Ophthalmic Center, No.474 Hospital of Chinese PLA, Urumqi 830013, Xinjiang Uygur Autonomous Region, China
| | - Bing Ren
- Ophthalmic Center, No.474 Hospital of Chinese PLA, Urumqi 830013, Xinjiang Uygur Autonomous Region, China
| | - Xiao-Wei Gao
- Ophthalmic Center, No.474 Hospital of Chinese PLA, Urumqi 830013, Xinjiang Uygur Autonomous Region, China
| | - Ying Luo
- Ophthalmic Center, No.474 Hospital of Chinese PLA, Urumqi 830013, Xinjiang Uygur Autonomous Region, China
| | - Yan Cai
- Ophthalmic Center, No.474 Hospital of Chinese PLA, Urumqi 830013, Xinjiang Uygur Autonomous Region, China
| | - Kun Zhou
- Medical College of Shihezi University, Shihezi 832000, Xinjiang Uygur Autonomous Region, China ; Ophthalmic Center, No.474 Hospital of Chinese PLA, Urumqi 830013, Xinjiang Uygur Autonomous Region, China
| | - An-Jie Du
- Department of Ophthalmology, Yuncheng Central Hospital, Yuncheng 044000, Shanxi Province, China
| | - Yong Zhao
- Ophthalmic Center, No.474 Hospital of Chinese PLA, Urumqi 830013, Xinjiang Uygur Autonomous Region, China
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