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Xu J, Ni M, Wang J, Zhu J, Niu G, Cui J, Li X, Meng Q, Chen R. Low-level PM 2.5 induces the occurrence of early pulmonary injury by regulating circ_0092363. ENVIRONMENT INTERNATIONAL 2024; 187:108700. [PMID: 38678936 DOI: 10.1016/j.envint.2024.108700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 04/09/2024] [Accepted: 04/23/2024] [Indexed: 05/01/2024]
Abstract
The significant correlation between particulate matter with aerodynamic diameters of ≤ 2.5 µm (PM2.5) and the high morbidity and mortality of respiratory diseases has become the consensus of the research. Epidemiological studies have clearly pointed out that there is no safe concentration of PM2.5, and mechanism studies have also shown that exposure to PM2.5 will first cause pulmonary inflammation. Therefore, the purpose of this study is to explore the mechanism of early lung injury induced by low-level PM2.5 from the perspective of epigenetics. Based on the previous results of population samples, combined with an in vitro/vivo exposure model of PM2.5, it was found that low-level PM2.5 promoted the transport of circ_0092363 from intracellular to extracellular spaces. The decreased expression of intracellular circ_0092363 resulted in reduced absorption of miR-31-5p, leading to inhibition of Rho associated coiled-coil containing protein kinase 1 (ROCK1) and the subsequent abnormal expression of tight junction proteins such as Zonula occludens protein 1 (ZO-1) and Claudin-1, ultimately inducing the occurrence of early pulmonary injury. Furthermore, this study innovatively introduced organoid technology and conducted a preliminary exploration for a study of the relationship among environmental exposure genomics, epigenetics and disease genomics in organoids. The role of circ_0092363 in early pulmonary injury induced by low-level PM2.5 was elucidated, and its value as a potential diagnostic biomarker was confirmed.
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Affiliation(s)
- Jie Xu
- Yunnan Provincial Key Laboratory of Public Health and Biosafety & School of Public Health, Kunming Medical University, Kunming 650500, China.
| | - Mengyao Ni
- School of Public Health, Capital Medical University, Beijing 100069, China.
| | - Jing Wang
- School of Public Health, Capital Medical University, Beijing 100069, China.
| | - Jiahao Zhu
- School of Public Health, Capital Medical University, Beijing 100069, China.
| | - Guolei Niu
- School of Public Health, Capital Medical University, Beijing 100069, China.
| | - Jiajing Cui
- School of Public Health, Capital Medical University, Beijing 100069, China.
| | - Xiaobo Li
- School of Public Health, Capital Medical University, Beijing 100069, China.
| | - Qingtao Meng
- School of Public Health, Capital Medical University, Beijing 100069, China; Laboratory for Gene-Environment and Reproductive Health, Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China; Beijing Laboratory of Allergic Diseases, Beijing Municipal Education Commission, Beijing 100069, China.
| | - Rui Chen
- School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Laboratory of Allergic Diseases, Beijing Municipal Education Commission, Beijing 100069, China; Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Xi'an 710032, China.
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Hu N, Jin FY, Gao MM, Liu LJ, Wang JH, Yang BF, Li CL. Baicalein improves Na 2SeO 3 induced cataract by enhancing the antioxidant capacity of juvenile Sprague Dawley Rat. JOURNAL OF ETHNOPHARMACOLOGY 2024; 320:117433. [PMID: 37979815 DOI: 10.1016/j.jep.2023.117433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 11/10/2023] [Accepted: 11/13/2023] [Indexed: 11/20/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Baicalein (BAI) is the crucial flavonoid component in Scutellaria baicalensis Georgi, possessing biological functions such as anti-oxidant, anti-apoptotic, and anti-inflammatory. However, there is limited intensive pharmacological and mechanistic research on the therapeutic effects of BAI for cataract treatment. AIM OF THE STUDY This study aimed to investigate the effects and mechanisms of BAI on Na2SeO3-induced cataract in juvenile rats. MATERIALS AND METHODS The cataract model was established by a single subcutaneous injection of 3.46 mg/kg Na2SeO3 on the back of 10-day-old rats. The BAI (25 mg/kg, 50 mg/kg, 100 mg/kg) was administered to the 8-day-old rats and continued until they reached 30 days of age, and the opacity of the lens was observed using a slit lamp microscope every 3 days. Pathological changes in the lens were observed using hematoxylin-eosin (HE) staining to investigate the effects of BAI on Na2SeO3-induced cataract in rats. The levels of antioxidant substances in rat serum and the lens, as well as the levels of soluble and insoluble proteins in rat lens, were measured by the reagent kit. Furthermore, the mechanism of BAI on Na2SeO3-induced cataract rats was analyzed by network pharmacology, molecular docking, and Western blot. RESULTS BAI significantly increased the content of soluble proteins in the lens, mitigated the dense opacity of rat lens and reduced the damage to lens epithelial cells, reduced the levels of malondialdehyde (MDA) in rat serum and lens, increased the levels of total superoxide dismutase (T-SOD) and Glutathione peroxidase (GSH-PX). The improvement effects of BAI on Na2SeO3-induced cataract may related to the mitogen-activated protein kinase (MAPK) and the phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT) signaling pathways. CONCLUSION In conclusion, this study demonstrated that BAI could mitigate the dense opacity of rat lens in Na2SeO3-induced cataract rats, which may be achieved through the MAPK signaling pathway and the PI3K/AKT signaling pathway.
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Affiliation(s)
- Nan Hu
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, Liaoning, China
| | - Fang-Yin Jin
- Department of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, Liaoning, China
| | - Miao-Miao Gao
- Department of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, Liaoning, China
| | - Lian-Jie Liu
- Department of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, Liaoning, China
| | - Jin-Hui Wang
- Department of Pharmacy, Harbin Medical University, Harbin, 150081, Heilongjiang, China
| | - Bao-Feng Yang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, Liaoning, China; Department of Pharmacy, Harbin Medical University, Harbin, 150081, Heilongjiang, China.
| | - Chun-Li Li
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, Liaoning, China.
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Tian X, Wei J. Sestrin 2 protects human lens epithelial cells from oxidative stress and apoptosis induced by hydrogen peroxide by regulating the mTOR/Nrf2 pathway. Int J Immunopathol Pharmacol 2024; 38:3946320241234741. [PMID: 38379215 PMCID: PMC10880533 DOI: 10.1177/03946320241234741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 02/07/2024] [Indexed: 02/22/2024] Open
Abstract
OBJECTIVE We aimed to explore the effect and potential mechanism of Sestrin 2 (SESN2) in human lens epithelial cells (HLECs). METHODS To mimic the oxidative stress environment, SAR01/04 cells were treated with 200 μM hydrogen peroxide (H2O2) for 24 h. Cell viability and apoptosis were checked by cell counting kit-8 and flow cytometry. Western blot was taken to check the protein changes of SESN2, B-cell lymphoma-2 (Bcl-2), Bcl-2-associated X (Bax), mechanistic target of rapamycin (mTOR), phosphorylated (p)-mTOR, ribosomal protein S6 kinase B1 (p70S6K), p-p70S6K, and nuclear factor erythroid 2-related factor 2 (Nrf2). Superoxide dismutase (SOD), catalase (CAT), malondialdehyde (MDA), and reactive oxygen species (ROS) were detected via the corresponding reagent kit. The levels of interleukin (IL)-1β, IL-18, and tumor necrosis factor (TNF)-α were measured using enzyme-linked immunosorbent assay. RESULTS SESN2 was down-regulated in cataract lens tissue and up-regulated in SAR01/04 cells treated with H2O2. Under treatment of H2O2, up-regulation of SESN2 improved cell viability, enhanced the activity of SOD and CAT, inhibited cell apoptosis, and reduced the levels of MDA, ROS, IL-1β, IL-18, and TNF-α, while down-regulation of SESN2 caused the contrary effects. Further bioinformatics analysis suggested that SESN2 regulated the mTOR signaling pathway. Treatment of H2O2 inhibited p-mTOR and p-p70S6K protein expression, while overexpression of SESN2 increased p-mTOR and p-p70S6K protein expression in the H2O2 group and down-regulation of SESN2 further decreased p-mTOR and p-p70S6K protein expression in the H2O2 group. Additionally, H2O2 increased Nrf2 protein expression, and overexpression of SESN2 further increased Nrf2 protein expression in the H2O2 group. Importantly, rapamycin (an inhibitor of mTOR signaling pathway) and knockdown of Nrf2 reversed the promotive effects of SESN2 on cell viability and the inhibitive effects of SESN2 on cell apoptosis, oxidative stress, and inflammatory reaction. CONCLUSION SESN2 protected HLECs damage induced by H2O2, which was related to the activation of mTOR/Nrf2 pathway.
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Affiliation(s)
- Xiao Tian
- Department of Ophthalmology, Jinan Aier Eye Hospital, Jinan, China
| | - Jie Wei
- Department of Ophthalmology, No. 960 Hospital of PLA Joint Logistic Support Force, Jinan, China
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Liu S, Su D, Sun Z, Piao T, Li S, Guan L, Fu Y, Zhang G, Cui T, Zhu W, Ma X, Hu S. Epigallocatechin gallate delays age-related cataract development via the RASSF2/AKT pathway. Eur J Pharmacol 2023; 961:176204. [PMID: 37979829 DOI: 10.1016/j.ejphar.2023.176204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 11/10/2023] [Accepted: 11/10/2023] [Indexed: 11/20/2023]
Abstract
Age-related cataract (ARC) is a common eye disease, the main cause of which is oxidative stress-mediated apoptosis of lens epithelial cells (LECs). Epigallocatechin gallate (EGCG) is the most potent antioxidant in green tea. Our results demonstrated that EGCG could effectively reduce apoptosis of LECs and retard lens clouding in aged mice. By comparing transcriptome sequencing results of three groups of mice (young control, untreated aged, and EGCG-treated) and screening using GO and KEGG analyses, we selected RASSF2 as the effector gene of EGCG for mechanistic exploration. We verified that the differential expression of RASSF2 was associated with the occurrence of ARC in clinical samples and mouse tissues by immunohistochemistry and western blotting, respectively. We showed that high RASSF2 expression plays a crucial role in the oxidative induction of apoptosis in LECs, as revealed by overexpression and interference experiments. Further studies showed that RASSF2 mediates the inhibitory effect of EGCG on apoptosis and ARCogenesis in LECs by regulating AKT (Ser473) phosphorylation. In this study, we found for the first time the retarding effect of EGCG on lens clouding in mice and revealed the mechanism of action of RASSF2/AKT in it, which provides a theoretical basis for the targeted treatment of EGCG.
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Affiliation(s)
- Shanhe Liu
- Mudanjiang Medical University, Mudanjiang, 157011, Heilongjiang, China
| | - Dongmei Su
- Department of Genetics, NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Health Department, Beijing, 100081, China; Graduate School, Peking Union Medical College, Beijing, 100081, China
| | - Zhaoyi Sun
- Hongqi Hospital of Mudanjiang Medical University, Mudanjiang, 157011, Heilongjiang, China
| | - Tianhua Piao
- Hongqi Hospital of Mudanjiang Medical University, Mudanjiang, 157011, Heilongjiang, China
| | - Sijia Li
- Hongqi Hospital of Mudanjiang Medical University, Mudanjiang, 157011, Heilongjiang, China
| | - Lina Guan
- Department of Genetics, NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Health Department, Beijing, 100081, China
| | - Yanjiang Fu
- Daqing Ophthalmology Hospital, Daqing, 163000, Heilongjiang, China
| | - Gaobo Zhang
- Mudanjiang Medical University, Mudanjiang, 157011, Heilongjiang, China
| | - Tingsong Cui
- Mudanjiang Medical University, Mudanjiang, 157011, Heilongjiang, China
| | - Wenna Zhu
- Hongqi Hospital of Mudanjiang Medical University, Mudanjiang, 157011, Heilongjiang, China
| | - Xu Ma
- Department of Genetics, NHC Key Laboratory of Reproductive Health Engineering Technology Research, National Research Institute for Family Planning, Health Department, Beijing, 100081, China; Graduate School, Peking Union Medical College, Beijing, 100081, China.
| | - Shanshan Hu
- Hongqi Hospital of Mudanjiang Medical University, Mudanjiang, 157011, Heilongjiang, China.
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Zhao W, Chen S, Lu B, Wu D, Gu Y, Hao S, Sheng F, Xu Y, Han Y, Chen R, Zhou L, Fu Q, Yao K. Upregulation of EphA2 is associated with apoptosis in response to H 2O 2 and UV radiation-induced cataracts. Arch Biochem Biophys 2023; 747:109756. [PMID: 37714253 DOI: 10.1016/j.abb.2023.109756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 09/07/2023] [Accepted: 09/13/2023] [Indexed: 09/17/2023]
Abstract
In this article, we examine the role of erythropoietin-producing hepatocellular receptor A2 (EphA2) in the apoptosis of lens epithelial cells (LECs) in H2O2 and UV radiation-induced cataracts. We treated SRA01/04 cells with H2O2 or ultraviolet (UV) radiation to create a cataract cell model. We constructed a cataract lens model by exposing mice to UV radiation. We used CCK8 assays, Annexin V-FITC analysis, and immunohistochemical staining to explore proliferation and apoptosis of the cataract model. Thereafter, we used quantitative real-time PCR (qPCR) analysis, Western blot assays, and immunofluorescence to determine gene and protein expression levels. We also employed Crispr/Cas9 gene editing to create an EphA2 knockout in SRA01/04 cells. Results: H2O2 or UV radiation induced SRA01/04 cells showed EphA2 gene upregulation. CCK8 and apoptosis assays showed that EphA2 over-expression (OE) reduced epithelial cell apoptosis, but knockout of EphA2 induced it in response to H2O2 and UV radiation, respectively. Mutation of the EphA2 protein kinase domain (c.2003G > A, p. G668D) had a limited effect on cell apoptosis. In vivo, the EphA2 protein level increased in the lenses of UV-treated mice. Our results showed that EphA2 was upregulated in SRA01/04 cells in response to H2O2 and UV radiation. Mutation of the EphA2 protein kinase domain (c.2003G > A, p. G668D) had a limited effect on H2O2 and UV radiation-induced cell apoptosis. We confirmed this change with an experiment on UV-treated mice. The present study established a novel association between EphA2 and LEC apoptosis.
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Affiliation(s)
- Wei Zhao
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Shuying Chen
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Bing Lu
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Di Wu
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Yuzhou Gu
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Shengjie Hao
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Feiyin Sheng
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Yili Xu
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Yu Han
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Rongrong Chen
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China
| | - Lei Zhou
- School of Optometry, Department of Applied Biology and Chemical Technology, Research Centre for SHARP Vision (RCSV), The Hong Kong Polytechnic University, Hong Kong, China; Centre for Eye and Vision Research (CEVR), 17W Hong Kong Science Park, Hong Kong, China
| | - Qiuli Fu
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China.
| | - Ke Yao
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang Provincial Key Laboratory of Ophthalmology, Zhejiang Provincial Clinical Research Center for Eye Diseases, Zhejiang Provincial Engineering Institute on Eye Diseases, Hangzhou, Zhejiang, China.
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Liu M, Hu F, Lei C, Fu M, Li X, Yu L. Candidate genes identification and RNA-seq based pathway analysis associated with primary angle-closure glaucoma with cataract. BMC Ophthalmol 2023; 23:192. [PMID: 37131205 PMCID: PMC10152770 DOI: 10.1186/s12886-023-02950-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 04/27/2023] [Indexed: 05/04/2023] Open
Abstract
BACKGROUND Cataract is commonly observed in patients with primary angle-closure glaucoma; however, its underlying pathological mechanisms remain unclear. This study aimed to improve our knowledge on the pathological processes involved in primary angle-closure glaucoma (PACG) by identifying potential prognostic genes associated with cataract progression. METHODS Thirty anterior capsular membrane samples were collected from PACG patients with cataracts and age-related cataracts. Differentially expressed genes (DEGs) between these two cohorts were analyzed using high-throughput sequencing. Gene ontology and Kyoto Encyclopedia of Genes and Genomes analyses were performed to screen the DEGs, and potential prognostic markers and their coexpression network were then predicted by bioinformatic analyses. The DEGs were further validated by reverse transcription-quantitative polymerase chain reaction. RESULTS A total of 399 DEGs were found to be specifically associated with cataracts development in PACG patients, among which 177 and 221 DEGs were upregulated and downregulated, respectively. STRING and Cytoscape network analyses revealed seven genes-CTGF, FOS, CAV1, CYR61, ICAM1, EGR1, and NR4A1-that were remarkably enriched and mainly involved in the MAPK, PI3K/Akt, Toll-like receptor, and TNF signaling pathways. RT-qPCR-based validation further confirmed that the sequencing results were accurate and reliable. CONCLUSIONS Herein, we identified seven genes and their signaling pathways that may contribute to cataract progression in patients with high intraocular pressure. Taken together, our findings highlight new molecular mechanisms that may explain the high incidence of cataracts in PACG patients. In addition, the genes identified herein may represent new foundations for the development of therapeutic strategies for PACG with cataract.
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Affiliation(s)
- Min Liu
- Department of Ophthalmology, The People's Hospital of Wenjiang Chengdu, Chengdu, Sichuan Province, 611130, China
| | - Fei Hu
- Department of Ophthalmology, Daping Hospital, Army Medical Center, Army Medical University, Chongqing, 40042, China
| | - Caifeng Lei
- Department of Ophthalmology, Daping Hospital, Army Medical Center, Army Medical University, Chongqing, 40042, China
| | - Min Fu
- Department of Ophthalmology, Daping Hospital, Army Medical Center, Army Medical University, Chongqing, 40042, China
| | - Xue Li
- Department of Ophthalmology, Daping Hospital, Army Medical Center, Army Medical University, Chongqing, 40042, China
| | - Ling Yu
- Department of Ophthalmology, Daping Hospital, Army Medical Center, Army Medical University, Chongqing, 40042, China.
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Yang L, Qiao P, Zhang J, Chen X, Hu A, Huang S. Crosstalk between ROCK1 and PYROXD1 regulates CAFs activation and promotes laryngeal squamous cell carcinoma metastasis. Discov Oncol 2022; 13:120. [PMID: 36334145 PMCID: PMC9637080 DOI: 10.1007/s12672-022-00578-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 09/15/2022] [Indexed: 11/06/2022] Open
Abstract
We previously found that the Rho-associated kinase 1 (ROCK1) activated Cancer-associated fibroblasts (CAFs) to promote LSCC metastasis. Accumulating evidence indicates that pyridine nucleotide-disulfide oxidoreductase domain 1 (PYROXD1) is an oncogene; however, the crosstalk between ROCK1 and PYROXD1 in LSCC metastasis remains largely unknown. Here, we found that ROCK1 could target PYROXD1. The knockdown of ROCK1 expression reduces the expression of PYROXD1, while the knockdown of PYROXD1 expression did not alter the expression of ROCK1 indicating that ROCK1 is upstream of PYROXD1. Further, LSCC cells cocultured with PYROXD1 knocked-down CAFs exhibited lower proliferation, migration, invasion and metastasis abilities. Conversely, LSCC cells cocultured with PYROXD1-overexpressing CAFs showed opposite results. In conclusion, the crosstalk between ROCK1 and PYROXD1 regulated CAFs activation and promoted LSCC metastasis.
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Affiliation(s)
- Liyun Yang
- Department of Otolaryngology, Gongli Hospital, The Second Military Medical University, Shanghai, 200135, China
| | - Peipei Qiao
- Department of Otolaryngology, Gongli Hospital, The Second Military Medical University, Shanghai, 200135, China
| | - Jianwei Zhang
- Department of Otolaryngology, Gongli Hospital, The Second Military Medical University, Shanghai, 200135, China
| | - Xiaoping Chen
- Department of Otolaryngology, Gongli Hospital, The Second Military Medical University, Shanghai, 200135, China
| | - An Hu
- Department of Otolaryngology, Gongli Hospital, The Second Military Medical University, Shanghai, 200135, China.
| | - Shuixian Huang
- Department of Otolaryngology, Gongli Hospital, The Second Military Medical University, Shanghai, 200135, China.
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Yang X, Zhang F, Liu X, Meng J, Du S, Shao J, Liu J, Fang M. FOXO4 mediates resistance to oxidative stress in lens epithelial cells by modulating the TRIM25/Nrf2 signaling. Exp Cell Res 2022; 420:113340. [PMID: 36075446 DOI: 10.1016/j.yexcr.2022.113340] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 08/06/2022] [Accepted: 08/31/2022] [Indexed: 11/19/2022]
Abstract
Oxidative stress damage to the lens is a key factor in most cataracts. Forkhead box O 4 (FOXO4), a member of the forkhead box O family, plays a pivotal role in oxidative stress. FOXO4 is upregulated in lens of age-related cataract patients, but its role in cataract has not been elucidated. Herein, we investigated the role and mechanism of FOXO4 during oxidative stress damage in lens epithelial cells. H2O2 treatment enhanced FOXO4 expression in HLEpiC cells. Short hairpin RNAs mediated FOXO4 silence aggravated H2O2-induced cell apoptosis. In addition, upon H2O2 exposure, silencing of FOXO4 reduced SOD and CAT activities, as well as increased intracellular MDA and ROS levels. FOXO4 silencing also inhibited Nrf2 nuclear translocation, followed by reducing the expressions of Nrf2-governed antioxidant genes HO-1 and NOQ-1. Exogenous overexpression of FOXO4 was also involved in this study and exhibited opposite effects of FOXO4-silencing. Mechanistically, FOXO4 directly bound the promoter of TRIM25 and regulated its transcription, thereby activating the Nrf2 signaling. Taken together, in the condition of oxidative stress, the expression of FOXO4 showed a compensatory upregulation and it exhibited an anti-oxidative effect by modulating the transcription of TRIM25, thus activating the Nrf2 signaling. The FOXO4/TRIM25/Nrf2 axis may be associated with the pathological mechanisms of cataract.
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Affiliation(s)
- Xin Yang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Fengyan Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Xuhui Liu
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Jia Meng
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Shanshan Du
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Jingzhi Shao
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Jingjing Liu
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Mengyuan Fang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China.
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Xin J, Zhang H, Yin D, An N, Chen Y, Xu J, Zhang J, Liu Z, Liu Y, Yin W, Li M, Hu X. A novel coumarin derivative DBH2 inhibits proliferation and induces apoptosis of chronic myeloid leukemia cells. Genes Dis 2022; 10:596-607. [DOI: 10.1016/j.gendis.2022.08.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 08/17/2022] [Accepted: 08/23/2022] [Indexed: 10/14/2022] Open
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Biliverdin Reductase A Protects Lens Epithelial Cells against Oxidative Damage and Cellular Senescence in Age-Related Cataract. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:5628946. [PMID: 35910837 PMCID: PMC9325611 DOI: 10.1155/2022/5628946] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 07/01/2022] [Indexed: 02/07/2023]
Abstract
Age-related cataract (ARC) is the common cause of blindness globally. Reactive oxygen species (ROS), one of the greatest contributors to aging process, leads to oxidative damage and senescence of lens epithelial cells (LECs), which are involved in the pathogenesis of ARC. Biliverdin reductase A (BVRA) has ROS-scavenging ability by converting biliverdin (BV) into bilirubin (BR). However, little is known about the protective effect of BVRA against ARC. In the present study, we measured the expression level of BVRA and BR generation in human samples. Then, the antioxidative property of BVRA was compared between the young and senescent LECs upon stress condition. In addition, we evaluated the effect of BVRA on attenuating H2O2-induced premature senescence in LECs. The results showed that the mRNA expression level of BVRA and BR concentration were decreased in both LECs and lens cortex of age-related nuclear cataract. Using the RNA interference technique, we found that BVRA defends LECs against oxidative stress via (i) restoring mitochondrial dysfunction in a BR-dependent manner, (ii) inducing heme oxygenase-1 (HO-1) expression directly, and (iii) promoting phosphorylation of ERK1/2 and nuclear delivery of nuclear factor erythroid 2-related factor 2 (Nrf2). Intriguingly, the antioxidative effect of BVRA was diminished along with the reduced BR concentration and repressed nuclear translocation of BVRA and Nrf2 in senescent LECs, which would be resulted from the decreased BVRA activity and impaired nucleocytoplasmic trafficking. Eventually, we confirmed that BVRA accelerates the G1 phase transition and prevents against H2O2-induced premature senescence in LECs. In summary, BVRA protects LECs against oxidative stress and cellular senescence in ARC by converting BV into BR, inducing HO-1 expression, and activating the ERK/Nrf2 pathway. This trial is registered with ChiCTR2000036059.
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Clinical Analysis of Color Doppler Ultrasound Diagnosis of Senile Cataract Based on Intelligent Processor. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:1037439. [PMID: 35529272 PMCID: PMC9068292 DOI: 10.1155/2022/1037439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/11/2022] [Accepted: 03/28/2022] [Indexed: 11/18/2022]
Abstract
In order to improve the effect of on-the-spot diagnosis of senile cataract, this paper combines the intelligent processor to explore the application of color Doppler ultrasound in the clinical analysis of senile cataract. Moreover, this paper measures and calculates the diameter, perimeter, area, volume, or velocity of blood flow reflected by color Doppler ultrasound images. In addition, this paper adopts the measurement method provided by composite measurement to design the intelligent processor. Each measurement analysis package is defined as an independent class, and the data, properties, and methods are encapsulated in a class, which is beneficial to the modular design of the program and the overall management of the system. The experimental results verify that the intelligent processor proposed in this paper has a certain effect in the clinical analysis of color Doppler ultrasound diagnosis of senile cataract.
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12
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Liu S, Su D, Sun Z, Guan L, Wang Z, Zhang G, Zheng G, Cui T, Ma X, Hu S. High MST2 expression regulates lens epithelial cell apoptosis in age-related cataracts through YAP1 targeting GLUT1. Arch Biochem Biophys 2022; 723:109255. [PMID: 35452623 DOI: 10.1016/j.abb.2022.109255] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 04/01/2022] [Accepted: 04/15/2022] [Indexed: 11/02/2022]
Abstract
Age-related cataract (ARC) is a severe visual impairment disease and its pathogenesis remains unclear. This study investigated the relevance of MST2/YAP1/GLUT1 in ARC development in vivo and in vitro, and explored the role and possible mechanisms of this pathway in oxidative damage-mediated apoptosis of lens epithelial cells (LECs). Western blot analysis and immunohistochemistry showed that MST2 and phosphorylated (p)-YAP (Ser127) protein levels were increased, and YAP1 and GLUT1 protein levels were decreased in LECs of ARC patients and aged mice. Additionally, differential expression of MST2 and YAP1 was associated with H2O2-induced apoptosis of human lens epithelial B3 (HLE-B3) cells. CCK-8 and Hoechst 33,342 apoptosis assays showed that MST2 and YAP1 were involved in H2O2-induced apoptosis of LECs. Subsequent experiments showed that, during MST2-mediated H2O2-induced apoptosis, p-YAP (Ser127) levels were elevated and immunofluorescence revealed nucleoplasmic translocation and inhibition of YAP1 protein expression. Furthermore, GLUT1 was in turn synergistically transcriptionally regulated by YAP1-TEAD1 in dual luciferase reporter assays. In conclusion, our study indicates that the MST2/YAP1/GLUT1 pathway plays a major role in the pathogenesis of ARC and LECs apoptosis, providing a new direction for future development of targeted inhibitors that block this signaling pathway to prevent, delay, or even cure ARC.
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Affiliation(s)
- Shanhe Liu
- Mudanjiang Medical College, Mudanjiang, 157011, Heilongjiang, China
| | - Dongmei Su
- Department of Genetics, National Research Institute for Family Planning, Health Department, Beijing, 100081, China; Graduate School, Peking Union Medical College, Beijing, 100081, China
| | - Zhaoyi Sun
- Hongqi Hospital of Mudanjiang Medical College, Mudanjiang, 157011, Heilongjiang, China
| | - Lina Guan
- Department of Genetics, National Research Institute for Family Planning, Health Department, Beijing, 100081, China
| | - Zhongying Wang
- Mudanjiang Medical College, Mudanjiang, 157011, Heilongjiang, China
| | - Gaobo Zhang
- Mudanjiang Medical College, Mudanjiang, 157011, Heilongjiang, China
| | - Guiqian Zheng
- Mudanjiang Medical College, Mudanjiang, 157011, Heilongjiang, China
| | - Tingsong Cui
- Mudanjiang Medical College, Mudanjiang, 157011, Heilongjiang, China
| | - Xu Ma
- Department of Genetics, National Research Institute for Family Planning, Health Department, Beijing, 100081, China; Graduate School, Peking Union Medical College, Beijing, 100081, China.
| | - Shanshan Hu
- Hongqi Hospital of Mudanjiang Medical College, Mudanjiang, 157011, Heilongjiang, China.
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13
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Qi T, Jing R, Ma B, Hu C, Wen C, Shao Y, Pei C. The E3 Ligase RNF157 Inhibits Lens Epithelial Cell Apoptosis by Negatively Regulating p53 in Age-Related Cataracts. Invest Ophthalmol Vis Sci 2022; 63:11. [PMID: 35435923 PMCID: PMC9034709 DOI: 10.1167/iovs.63.4.11] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Purpose Age-related cataract (ARC) is a major cause of vision impairment worldwide. The E3 ubiquitin ligase RING finger protein 157 (RNF157) is involved in regulating cell survival and downregulated in human cataractous lens samples. However, the function of RNF157 in cataracts remains unclear. This study aimed to determine the role of RNF157 in ARC. Methods Real-time polymerase chain reaction (PCR) and Western blotting were used to analyze the expression of RNF157 in clinical lens capsules, rat cataract models, and oxidative stress cell models. Western blot analysis and flow cytometry were used to evaluate cell apoptosis. Co-IP assay, protein stability assay, and ubiquitination assay were used to detect the interaction between RNF157 and its substrate p53. Results The expression of RNF157 was downregulated in human cataract samples, UVB-induced rat cataract model, and H2O2-treated human lens epithelial cells (LECs). Ectopic expression of RNF157 protected LECs from H2O2-induced apoptosis. In contrast, knockdown of RNF157 enhanced oxidative stress-induced apoptotic cell death. Moreover, silence of RNF157 in the rat ex vivo lens model exacerbated lens opacity. Mechanistically, RNF157 causes ubiquitination and degradation of the tumor antigen p53. Overexpression of p53 eliminated the antiapoptotic effects of RNF157, whereas p53 knockdown rescued RNF157 silencing-induced cell death. Conclusions Our findings revealed that reduced RNF157 expression promoted LEC apoptosis by upregulating p53 in cataracts, suggesting that the regulation of RNF157 expression may serve as a potential therapeutic strategy for cataracts.
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Affiliation(s)
- Tiantian Qi
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ruihua Jing
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Bo Ma
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Conghui Hu
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Chan Wen
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yongping Shao
- Center for Translational Medicine, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Cheng Pei
- Department of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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14
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Shen Q, Zhou T. Knockdown of lncRNA TUG1 protects lens epithelial cells from oxidative stress-induced injury by regulating miR-196a-5p expression in age-related cataracts. Exp Ther Med 2021; 22:1286. [PMID: 34630641 PMCID: PMC8461521 DOI: 10.3892/etm.2021.10721] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 06/18/2021] [Indexed: 12/11/2022] Open
Abstract
Oxidative stress plays an important role in the pathogenesis of cataracts. Under oxidative stress, apoptosis of lens epithelial cells (LECs) is activated, which may cause lens opacity and accelerate the development of cataracts. Long non-coding RNA (lncRNA) and microRNA (miRNA/miR) are involved in cataracts. Previous studies have demonstrated that lncRNA taurine upregulated 1 (TUG1) promotes cell apoptosis induced by ultraviolet radiation by downregulating the expression of miR-421. However, the mechanism underlying TUG1 in age-related cataract remains to be elucidated. The present study aimed to investigate the effect of TUG1 in age-related cataracts and to determine the related underlying molecular mechanism. In the present study, the association between TUG1 and microRNA (miR)-196a-5p was predicted using StarBase and verified using a dual luciferase reporter assay in 293 cells. The LEC line SRA01/04 was exposed to 200 µM hydrogen peroxide (H2O2) for 24 h to establish an in vitro oxidative stress model. The mRNA expression levels of TUG1 and miR-196a-5p were analyzed using reverse transcription-quantitative PCR, whilst cell viability and apoptosis were determined using MTT and flow cytometry assays, respectively. The protein expression levels of cleaved caspase-3 and caspase-3 in SRA01/04 cells were determined using western blotting. The results of the present study revealed that TUG1 directly targeted miR-196a-5p expression. In addition, the expression levels of miR-196a-5p were downregulated in SRA01/04 cells following oxidative stress, whilst TUG1 expression was upregulated. Cell transfection with TUG1-small interfering RNA (siRNA) upregulated miR-196a-5p expression levels in SRA01/04 cells, which was reversed following co-transfection with the miR-196a-5p inhibitor. Transfection with TUG1-siRNA also reduced the levels of H2O2-induced oxidative damage in SRA01/04 cells, which was demonstrated by increased cell viability, reduced levels of apoptosis and downregulated cleaved caspase-3 levels. Conversely, transfection with the miR-196a-5p inhibitor reversed these effects aforementioned. Overexpression of miR-196a-5p reduced H2O2-induced oxidative damage in SRA01/04 cells. In conclusion, findings from the present study suggested that knocking down TUG1 expression may protect LECs from oxidative stress-induced apoptosis by upregulating the expression of miR-196a-5p.
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Affiliation(s)
- Qimin Shen
- Department of Ophthalmology, People's Hospital of Yuyao, Ningbo, Zhejiang 315400, P.R. China
| | - Tian Zhou
- Department of Ophthalmology, People's Hospital of Yuyao, Ningbo, Zhejiang 315400, P.R. China
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He J, Xie P, Ouyang J. Circ_0122396 Protects Human Lens Epithelial Cells from Hydrogen Peroxide-induced Injury by Binding to miR-15a-5p to Stimulate FGF1 Expression. Curr Eye Res 2021; 47:246-255. [PMID: 34486899 DOI: 10.1080/02713683.2021.1978100] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Circular_0122396 (circ_0122396) has been reported to be downregulated in age-related cataract (ARC); however, the underlying mechanism remains unknown. The study aimed to reveal the role of circ_0122396 in ARC progression and underneath mechanism. METHODS Hydrogen peroxide (H2O2) was employed to induce lens epithelial cells (SRA01/04) injury. The RNA expression of circ_0122396, microRNA-15a-5p (miR-15a-5p) and fibroblast growth factor 1 (FGF1) was detected by quantitative real-time polymerase chain reaction. Protein expression was checked by western blot. Cell viability, proliferation and apoptosis were investigated by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide, 5-Ethynyl-29-deoxyuridine and flow cytometry analysis, respectively. Oxidative stress was evaluated by superoxide dismutase and catalase activity assay kits and lipid peroxidation malondialdehyde assay kit. Online databases and mechanism assays were used to predict and identify the relationship between miR-15a-5p and circ_0122396 or FGF1. RESULTS Circ_0122396 and FGF1 expression were significantly downregulated, but miR-15a-5p expression was upregulated in ARC tissues or/and H2O2-treated SRA01/04 cells in comparison with control groups. H2O2 treatment repressed cell proliferation and induced cell apoptosis and oxidative stress, which was attenuated after circ_0122396 overexpression. MiR-15a-5p, a target mRNA of circ_0122396, was found to participate in H2O2-triggered cell damage by interacting with circ_0122396. Additionally, FGF1 silencing attenuated miR-15a-5p inhibitors-mediated action. Importantly, circ_0122396 regulated FGF1 expression by interaction with miR-15a-5p in H2O2-treated SRA01/04 cells. CONCLUSION Circ_0122396 ameliorated H2O2-triggered cell injury by inducing FGF1 through sponging miR-15a-5p, providing a potential target for ARC therapy.
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Affiliation(s)
- Jing He
- Department of Ophthalmology, Jiujiang No.1 People's Hospital, Jiujiang City, Jiangxi Provincial, China
| | - Ping Xie
- Department of Ophthalmology, Jiujiang No.1 People's Hospital, Jiujiang City, Jiangxi Provincial, China
| | - Jun Ouyang
- Department of Ophthalmology, Jiujiang No.1 People's Hospital, Jiujiang City, Jiangxi Provincial, China
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16
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Ji Q, Liu J, Wang G, Liu L, Zhong J. EphA2 overexpression reduces H2O2-induced damage of lens epithelial cells. Genet Mol Biol 2021; 44:e20200414. [PMID: 34358285 PMCID: PMC8345112 DOI: 10.1590/1678-4685-gmb-2020-0414] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 05/04/2021] [Indexed: 11/27/2022] Open
Abstract
Age-related cataract (ARC) is a progressive lens opacification that occurs from
middle to old age. Eph-receptor tyrosinekinase-type A2 (EphA2) has been reported
to be associated with ARC. This work aims to investigate the molecular mechanism
of EphA2 in ARC. We treated human lens epithelial cells (SRA01/04) with
different concentration of H2O2 to induce lens epithelial
cell damage. Then, we found that H2O2 treatment
significantly suppressed cell viability and enhanced the expression of EphA2 in
the SRA01/04 cells. H2O2 treatment repressed cell
viability and enhanced the levels of reactive oxygen species (ROS) in SRA01/04
cells, which was partly abolished by EphA2 up-regulation. Moreover, EphA2
overexpression reduced H2O2-induced apoptosis of SRA01/04
cells. EphA2 up-regulation caused an up-regulation of Bcl-2, and repressed the
expression of Bax and Cleaved-caspase-3 in the SRA01/04 cells following
H2O2 treatment. In conclusion, our data confirm that
EphA2 overexpression enhances cell viability and inhibits apoptosis in the
H2O2-treated SRA01/04 cells, thereby reducing
H2O2-induced damage of lens epithelial cells. Thus,
this work provides new insights into the mechanism of EphA2 in ARC.
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Affiliation(s)
- Qingshan Ji
- University of Science and Technology of China, Affiliated First Hospital of USTC, Division of Life Sciences and Medicine, Department of Ophthalmology, Hefei, China
| | - Jing Liu
- Ophthalmic Hospital of Wuhu, Department of Ophthalmology, Wuhu, China
| | - Guifang Wang
- Loudi Central Hospital of Hunan, Department of Ophthalmology, China
| | - Lian Liu
- Affiliated First Hospital of Jinan University, Department of Ophthalmology, Guangzhou, China
| | - Jingxiang Zhong
- Affiliated First Hospital of Jinan University, Department of Ophthalmology, Guangzhou, China
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17
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Guo Q, Geletu Q, Zhang Y. ZNF219 protects human lens epithelial cells against H 2O 2-induced injury via targeting SOX9 through activating AKT/GSK3β pathway. Hum Exp Toxicol 2021; 40:S7-S15. [PMID: 34167360 DOI: 10.1177/09603271211027944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Opacity of the lens caused by cataracts could lead to severe visual impairment and even blindness. Oxidative stress caused by exposure of lens epithelial cells to hydrogen peroxide (H2O2) can lead to DNA damage and impair cell function. Therefore, how to prevent lens epithelial cells from being harmed by H2O2 is an urgent problem. The ZNF219 gene belongs to the Kruppel like zinc finger gene family, which is involved in a variety of biological processes. In this study, we found the low expression of ZNF219 in H2O2-induced HLE-B3 cells. We further noticed ZNF219 could improve the survival rate of H2O2-induced HLE-B3 cells, and inhibit the apoptosis and oxidative stress response. Mechanically, ZNF219 protected human lens epithelial cells against H2O2-induced injury via targeting SOX9 through activating AKT/GSK3β pathway. We therefore thought ZNF219 was a key protective protein in the oxidative damage of human lens epithelial cells and the pathogenesis of cataract.
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Affiliation(s)
- Q Guo
- Department of Ophtalmology, Inner Mongolia Chaoju Eye Hospital, Hohhot, Inner Mongolia, People's Republic of China
| | - Q Geletu
- Department of Ophtalmology, Affiliated 534199Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, People's Republic of China
| | - Y Zhang
- 117972The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology, Chongqing Eye Institute, Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, P. R. China
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