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Chou HD, Shiah SG, Chuang LH, Wu WC, Hwang YS, Chen KJ, Kang EYC, Yeung L, Nien CY, Lai CC. MicroRNA-152-3p and MicroRNA-196a-5p Are Downregulated When Müller Cells Are Promoted by Components of the Internal Limiting Membrane: Implications for Macular Hole Healing. Int J Mol Sci 2023; 24:17188. [PMID: 38139016 PMCID: PMC10743628 DOI: 10.3390/ijms242417188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/29/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023] Open
Abstract
Müller cells play a critical role in the closure of macular holes, and their proliferation and migration are facilitated by the internal limiting membrane (ILM). Despite the importance of this process, the underlying molecular mechanism remains underexplored. This study investigated the effects of ILM components on the microRNA (miRNA) profile of Müller cells. Rat Müller cells (rMC-1) were cultured with a culture insert and varying concentrations of ILM component coatings, namely, collagen IV, laminin, and fibronectin, and cell migration was assessed by measuring cell-free areas in successive photographs following insert removal. MiRNAs were then extracted from these cells and analyzed. Mimics and inhibitors of miRNA candidates were transfected into Müller cells, and a cell migration assay and additional cell viability assays were performed. The results revealed that the ILM components promoted Müller cell migration (p < 0.01). Among the miRNA candidates, miR-194-3p was upregulated, whereas miR-125b-1-3p, miR-132-3p, miR-146b-5p, miR-152-3p, miR-196a-5p, miR-542-5p, miR-871-3p, miR-1839-5p, and miR-3573-3p were significantly downregulated (p < 0.05; fold change > 1.5). Moreover, miR-152-3p and miR-196a-5p reduced cell migration (p < 0.05) and proliferation (p < 0.001), and their suppressive effects were reversed by their respective inhibitors. In conclusion, miRNAs were regulated in ILM component-activated Müller cells, with miR-152-3p and miR-196a-5p regulating Müller cell migration and proliferation. These results serve as a basis for understanding the molecular healing process of macular holes and identifying potential new target genes in future research.
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Affiliation(s)
- Hung-Da Chou
- Department of Life Sciences, National Central University, Taoyuan 32001, Taiwan; (H.-D.C.); (S.-G.S.)
- Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan 33305, Taiwan; (W.-C.W.); (Y.-S.H.); (K.-J.C.); (E.Y.-C.K.)
- College of Medicine, Chang Gung University, Taoyuan 33305, Taiwan; (L.-H.C.); (L.Y.)
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 35053, Taiwan
| | - Shine-Gwo Shiah
- Department of Life Sciences, National Central University, Taoyuan 32001, Taiwan; (H.-D.C.); (S.-G.S.)
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 35053, Taiwan
| | - Lan-Hsin Chuang
- College of Medicine, Chang Gung University, Taoyuan 33305, Taiwan; (L.-H.C.); (L.Y.)
- Department of Ophthalmology, Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Wei-Chi Wu
- Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan 33305, Taiwan; (W.-C.W.); (Y.-S.H.); (K.-J.C.); (E.Y.-C.K.)
- College of Medicine, Chang Gung University, Taoyuan 33305, Taiwan; (L.-H.C.); (L.Y.)
| | - Yih-Shiou Hwang
- Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan 33305, Taiwan; (W.-C.W.); (Y.-S.H.); (K.-J.C.); (E.Y.-C.K.)
- College of Medicine, Chang Gung University, Taoyuan 33305, Taiwan; (L.-H.C.); (L.Y.)
| | - Kuan-Jen Chen
- Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan 33305, Taiwan; (W.-C.W.); (Y.-S.H.); (K.-J.C.); (E.Y.-C.K.)
- College of Medicine, Chang Gung University, Taoyuan 33305, Taiwan; (L.-H.C.); (L.Y.)
| | - Eugene Yu-Chuan Kang
- Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan 33305, Taiwan; (W.-C.W.); (Y.-S.H.); (K.-J.C.); (E.Y.-C.K.)
- College of Medicine, Chang Gung University, Taoyuan 33305, Taiwan; (L.-H.C.); (L.Y.)
| | - Ling Yeung
- College of Medicine, Chang Gung University, Taoyuan 33305, Taiwan; (L.-H.C.); (L.Y.)
- Department of Ophthalmology, Chang Gung Memorial Hospital, Keelung 20401, Taiwan
| | - Chung-Yi Nien
- Department of Life Sciences, National Central University, Taoyuan 32001, Taiwan; (H.-D.C.); (S.-G.S.)
| | - Chi-Chun Lai
- Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan 33305, Taiwan; (W.-C.W.); (Y.-S.H.); (K.-J.C.); (E.Y.-C.K.)
- College of Medicine, Chang Gung University, Taoyuan 33305, Taiwan; (L.-H.C.); (L.Y.)
- Department of Ophthalmology, Chang Gung Memorial Hospital, Keelung 20401, Taiwan
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Danieli MG, Antonelli E, Piga MA, Cozzi MF, Allegra A, Gangemi S. Oxidative stress, mitochondrial dysfunction, and respiratory chain enzyme defects in inflammatory myopathies. Autoimmun Rev 2023; 22:103308. [PMID: 36822387 DOI: 10.1016/j.autrev.2023.103308] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 02/19/2023] [Indexed: 02/24/2023]
Abstract
We investigated the relationship between oxidative stress and inflammatory myopathies. We searched in the current literature the role of mitochondria and respiratory chain defects as sources of oxidative stress and reactive oxygen species production that led to muscle weakness and fatigue. Different molecules and pathways contribute to redox milieu, reactive oxygen species generation, accumulation of misfolded and carbonylated proteins that lose their ability to fulfil cellular activities. Small peptides and physical techniques proved, in mice models, to reduce oxidative stress. We focused on inclusion body myositis, as a major expression of myopathy related to oxidative stress, where mitochondrial abnormalities are causative agents as well. We described the effect of physical exercise in inclusion body myositis that showed to increase strength and to reduce beta amyloid accumulation with subsequent improvement of the mitochondrial functions. We illustrated the influence of epigenetic control on the immune system by non-coding genetic material in the interaction between oxidative stress and inflammatory myopathies.
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Hong Y, Wu J, Sun Y, Zhang S, Lu Y, Ji Y. ceRNA network construction and identification of hub genes as novel therapeutic targets for age-related cataracts using bioinformatics. PeerJ 2023; 11:e15054. [PMID: 36987450 PMCID: PMC10040182 DOI: 10.7717/peerj.15054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 02/21/2023] [Indexed: 03/30/2023] Open
Abstract
Background The aim of this study is to investigate the genetic and epigenetic mechanisms involved in the pathogenesis of age-related cataract (ARC). Methods We obtained the transcriptome datafile of th ree ARC samples and three healthy, age-matched samples and used differential expression analyses to identify the differentially expressed genes (DEGs). The differential lncRNA-associated competing endogenous (ceRNA) network, and the protein-protein network (PPI) were constructed using Cytoscape and STRING. Cluster analyses were performed to identify the underlying molecular mechanisms of the hub genes affecting ARC progression. To verify the immune status of the ARC patients, immune-associated analyses were also conducted. Results The PPI network identified the FOXO1 gene as the hub gene with the highest score, as calculated by the Maximal Clique Centrality (MCC) algorithm. The ceRNA network identified lncRNAs H19, XIST, TTTY14, and MEG3 and hub genes FOXO1, NOTCH3, CDK6, SPRY2, and CA2 as playing key roles in regulating the pathogenesis of ARC. Additionally, the identified hub genes showed no significant correlation with an immune response but were highly correlated with cell metabolism, including cysteine, methionine, and galactose. Discussion The findings of this study may provide clues toward ARC pathogenic mechanisms and may be of significance for future therapeutic research.
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Affiliation(s)
- Yingying Hong
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Jiawen Wu
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Yang Sun
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Shenghai Zhang
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Yi Lu
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - Yinghong Ji
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai, China
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Li R, Zhu H, Li Q, Tang J, Jin Y, Cui H. METTL3-mediated m6A modification of has_circ_0007905 promotes age-related cataract progression through miR-6749-3p/EIF4EBP1. PeerJ 2023; 11:e14863. [PMID: 36908822 PMCID: PMC9997201 DOI: 10.7717/peerj.14863] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 01/17/2023] [Indexed: 03/08/2023] Open
Abstract
Many cases of blindness are caused by age-related cataracts (ARCs). N6-methyladenosine (m6A)-modified circRNA widely participates in disease progression. However, the role of m6A modification of circRNA in ARC is unclear. We mined and elucidated the functions and mechanisms of key circRNAs with m6A modification involved in ARC progression. The GSE153722 dataset was used to mine m6A-mediated key circRNA. Loss-of-function assays and rescue assays were used to explore the effect and mechanism of circRNA on ARC cell proliferation and apoptosis. Has_circ_0007905 was a hypermethylated and upregulated expression in the ARC group relative to the control group both in vivo and in vitro. Silencing of has_circ_0007905 promoted proliferation and inhibited the apoptosis of HLE-B3 cells. METTL3 was upregulated in HLE-B3 cells after ARC modeling and had four binding sites with has_circ_0007905 and a mediated m6A modification of has_circ_0007905. Proliferation was significantly inhibited and apoptosis of HLE-B3 cells was facilitated by METTL3 overexpression, whereas these effects were prevented by has_circ_0007905 silencing. Silencing of has_circ_0007905 led to an alteration in the transcriptome landscape. Differentially expressed genes were mainly involved in immune-related processes and pathways. EIF4EBP1 overexpression promoted apoptosis and suppressed proliferation, and also significantly reversed effects of has_circ_0007905 silencing. Moreover, miR-6749-3p significantly decreased the luciferase activities of wild type plasmids with both of has_circ_0007905 and EIF4EBP1. MiR-6749-3p inhibitor blocked elevation in proliferation and reduced EIF4EBP1 expression and apoptosis conferred by has_circ_0007905 silencing. We reveal for the first time that the commitment of ARC progression is guided by METTL3/has_circ_0007905/miR-6749-3p/EIF4EBP1 axis, and the results provide new insights into ARC pathology.
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Affiliation(s)
- Rui Li
- Department of Ophthalmology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Haohao Zhu
- Department of Ophthalmology, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China
| | - Qian Li
- Department of Ophthalmology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jiancen Tang
- Department of Ophthalmology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yiping Jin
- Department of Ophthalmology, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China
| | - Hongping Cui
- Department of Ophthalmology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
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Li H, Gao L, Du J, Ma T, Ye Z, Li Z. Differentially expressed gene profiles and associated ceRNA network in ATG7-Deficient lens epithelial cells under oxidative stress. Front Genet 2022; 13:1088943. [PMID: 36568386 PMCID: PMC9768497 DOI: 10.3389/fgene.2022.1088943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 11/25/2022] [Indexed: 12/12/2022] Open
Abstract
Oxidation is an essential factor during cataract development. Autophagy, usually a cytoprotective process, is always found elevated in lens epithelial cells under oxidation, yet its roles and associated molecular mechanisms under such circumstances are rarely elucidated. Herein, we extracted and re-analyzed the RNA sequencing data of the GSE161701 dataset from the Gene Expression Omnibus database to identify the differentially expressed mRNAs and lncRNAs by using the R package "DESeq2". Further analyses of gene ontology and KEGG enrichment were implemented via the packages "clusterProfiler" and "enrichplot". We found that after the knockout of ATG7, differentially expressed genes were more associated with hemopoiesis, vasculature development, axonogenesis, and hypoxia regulation. When stimulated with H2O2, LECs displayed a gene expression profile correlating with apoptotic and proliferative pathways, such as the MAPK signaling pathway and FoxO signaling pathway. The differentially expressed gene profiles of the two types of LECs (wild type and ATG7 deficient) under oxidation were distinct to a large extent. Furthermore, 1,341 up-regulated and 1912 down-regulated differential mRNAs and 263 up-regulated and 336 down-regulated differential lncRNAs between these two types of LECs subjected to H2O2 were detected, among which 292 mRNAs and 24 lncRNAs possibly interacted with ten cataract-related miRNAs. A competing endogenous lncRNA-miRNA-mRNA network based on such interactions was finally constructed.
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Affiliation(s)
- Hongyu Li
- Medical School of Chinese PLA, Beijing, China,Senior Department of Ophthalmology, The Third Medical Center of PLA General Hospital, Beijing, China
| | - Lixiong Gao
- Senior Department of Ophthalmology, The Third Medical Center of PLA General Hospital, Beijing, China
| | - Jinlin Du
- Senior Department of Ophthalmology, The Third Medical Center of PLA General Hospital, Beijing, China
| | - Tianju Ma
- Senior Department of Ophthalmology, The Third Medical Center of PLA General Hospital, Beijing, China
| | - Zi Ye
- Senior Department of Ophthalmology, The Third Medical Center of PLA General Hospital, Beijing, China,*Correspondence: Zi Ye, ; Zhaohui Li,
| | - Zhaohui Li
- Medical School of Chinese PLA, Beijing, China,Senior Department of Ophthalmology, The Third Medical Center of PLA General Hospital, Beijing, China,*Correspondence: Zi Ye, ; Zhaohui Li,
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Chen S, Zhang C, Shen L, Hu J, Chen X, Yu Y. Noncoding RNAs in cataract formation: star molecules emerge in an endless stream. Pharmacol Res 2022; 184:106417. [PMID: 36038044 DOI: 10.1016/j.phrs.2022.106417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/24/2022] [Accepted: 08/24/2022] [Indexed: 11/30/2022]
Abstract
For decades, research on the pathological mechanism of cataracts has usually focused on the abnormal protein changes caused by a series of risk factors. However, an entire class of molecules, termed non-coding RNA (ncRNA), was discovered in recent years and proven to be heavily involved in cataract formation. Recent studies have recognized the key regulatory roles of ncRNAs in cataracts by shaping cellular activities such as proliferation, apoptosis, migration and epithelial-mesenchymal transition (EMT). This review summarizes our current insight into the biogenesis, properties and functions of ncRNAs and then discusses the development of research on ncRNAs in cataracts. Considering the significant role of ncRNA in cataract formation, research on novel associated regulatory mechanisms is urgently needed, and the development of therapeutic alternatives for the treatment of cataracts seems promising.
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Affiliation(s)
- Silong Chen
- Eye Center of the Second Affiliated Hospital, Medical College of Zhejiang University, 88 Jiefang Road, Hangzhou, China
| | - Chengshou Zhang
- Eye Center of the Second Affiliated Hospital, Medical College of Zhejiang University, 88 Jiefang Road, Hangzhou, China
| | - Lifang Shen
- Eye Center of the Second Affiliated Hospital, Medical College of Zhejiang University, 88 Jiefang Road, Hangzhou, China
| | - Jianghua Hu
- Eye Center of the Second Affiliated Hospital, Medical College of Zhejiang University, 88 Jiefang Road, Hangzhou, China; Department of Ophthalmology, Jiande Branch, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiangjun Chen
- Eye Center of the Second Affiliated Hospital, Medical College of Zhejiang University, 88 Jiefang Road, Hangzhou, China; Institute of Translational Medicine, Zhejiang University School of Medicine, 268 Kaixuan Road, China.
| | - Yibo Yu
- Eye Center of the Second Affiliated Hospital, Medical College of Zhejiang University, 88 Jiefang Road, Hangzhou, China.
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Osmanov EM, Manyakov RR, Velichko PB, Zhabina UV, Fabrikantov OL, Nikolashin SI. [Prevalence and detection rate of senile cataract in individuals with cardiovascular diseases]. Vestn Oftalmol 2022; 138:41-47. [PMID: 36004590 DOI: 10.17116/oftalma202213804141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To determine the prevalence of senile cataracts and its detection rate among the population at the age of 40 and older with diseases of the cardiovascular system. MATERIAL AND METHODS This observational cross-sectional study was based on the information extracted from electronic health records (EHR) of patients aged 40-99 years assigned for medical services to a city polyclinic. RESULTS Among the population with essential hypertension (EH) senile cataract occurs with the frequency of 10.4±0.3% (95% CI 9.8-10.9%) of cases, in patients with cerebrovascular diseases (CVD) - 17.1±0.2% (95% CI 16.6-17.5%) of cases, with varicose veins of the lower extremities - 19.9±0.2% (95% CI 19.4-20.3%) of cases, with ischemic heart disease (IHD) - 15.8±0.2% (95% CI 15.4-16.2%) of cases. At the same time, senile cataract is associated with an increase in the likelihood of its detection in patients with hypertension by 6.8 times (OR 6.57; 95% CI 5.89-7.74), with CVD by 5 times (OR 5.02; 95% CI 4.64-5.44), with varicose veins by 3.7 times (OR 3.70; 95% CI 3.34-4.10), with IHD by 3.5 times (OR 3.53; 95% CI 3.20-3.90). Female gender is associated with an increased likelihood of developing senile cataracts in the presence of EH by 1.4 times (OR 1.420; 95% CI 1.299-1.553), in the presence of CVD by 1.2 times (OR 1.199; 95% CI 1.066-1.348), in the presence of varicose veins by 1.4 times (OR 1.355; 95% CI 1.064-1.725), in the presence of IHD by 1.5 times (OR 1.476; 95% CI 1.298-1.679). The detection rate of senile cataract is highest at the ages of 70-79 years, amounting to 18.1% of cases with hypertension, 24.0% of cases with CVD, 29.2% of cases with varicose veins, and 33.7% of cases with ischemic heart disease. CONCLUSION Target population groups have been identified for more effective screening studies in order to detect senile cataracts among them.
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Affiliation(s)
- E M Osmanov
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - R R Manyakov
- Medical Unit of the Russian Ministry of Internal Affairs in the Tambov Region, Tambov, Russia
| | - P B Velichko
- Tambov Branch of S.N. Fedorov National Medical Research Center "MNTK" Eye Microsurgery", Tambov, Russia
| | - U V Zhabina
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - O L Fabrikantov
- Tambov Branch of S.N. Fedorov National Medical Research Center "MNTK" Eye Microsurgery", Tambov, Russia
- Derzhavin Tambov State University, Medical Institute, Tambov, Russia
| | - S I Nikolashin
- Tambov Branch of S.N. Fedorov National Medical Research Center "MNTK" Eye Microsurgery", Tambov, Russia
- Derzhavin Tambov State University, Medical Institute, Tambov, Russia
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