1
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Nowak-Malczewska DM, Swierkowska J, Gajecka M. Differentially expressed microRNAs targeting genes in key pathways in keratoconus. Front Genet 2024; 15:1301676. [PMID: 38469119 PMCID: PMC10925626 DOI: 10.3389/fgene.2024.1301676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 02/12/2024] [Indexed: 03/13/2024] Open
Abstract
Introduction: Keratoconus (KTCN) is a corneal ectasia, characterized by a progressive thinning and protrusion of the cornea, with a complex etiology involving genetic, behavioral, lifestyle, and environmental factors. Previous studies indicated that microRNAs (miRNAs) could be involved in KTCN pathogenesis. This in silico study aimed to identify precursor microRNAs (pre-miRNAs) differentially expressed in KTCN corneas and to characterize mature miRNAs and their target genes. Materials and methods: Expression levels of pre-miRNAs were retrieved from our previously obtained RNA sequencing data of 25 KTCN and 25 non-KTCN human corneas (PMID:28145428, PMID:30994860). Differential expression with FDR ≤0.01 and ≥1.5-fold changes were considered significant. Lists of target genes (target score ≥90) of mature miRNAs were obtained from miRDB. Revealed up-/downregulated miRNAs and their target genes were assessed in databases and literature. Enrichment analyses were completed applying the DAVID database. Results: From a total of 47 pre-miRNAs, six were remarkably upregulated (MIR184, MIR548I1, MIR200A, MIR6728, MIR429, MIR1299) and four downregulated (MIR6081, MIR27B, MIR23B, MIR23A) in KTCN corneas. Out of the 1,409 target genes, 220 genes with decreased and 57 genes with increased expression levels in KTCN samples vs non-KTCN samples were found. The extracellular matrix (ECM) organization, response to mechanical stimulus, regulation of cell shape, and signal transduction processes/pathways were identified as distinctive in enrichment analyses. Also, processes associated with the regulation of transcription and DNA binding were listed. Conclusion: Indicated miRNAs and their target genes might be involved in KTCN pathogenesis via disruption of crucial molecular processes, including ECM organization and signal transduction.
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Affiliation(s)
- Dorota M. Nowak-Malczewska
- Chair and Department of Genetics and Pharmaceutical Microbiology, Poznan University of Medical Sciences, Poznan, Poland
| | | | - Marzena Gajecka
- Chair and Department of Genetics and Pharmaceutical Microbiology, Poznan University of Medical Sciences, Poznan, Poland
- Institute of Human Genetics, Polish Academy of Sciences, Poznan, Poland
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2
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Hyttinen JMT, Blasiak J, Kaarniranta K. Non-Coding RNAs Regulating Mitochondrial Functions and the Oxidative Stress Response as Putative Targets against Age-Related Macular Degeneration (AMD). Int J Mol Sci 2023; 24:ijms24032636. [PMID: 36768958 PMCID: PMC9917342 DOI: 10.3390/ijms24032636] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 01/31/2023] Open
Abstract
Age-related macular degeneration (AMD) is an ever-increasing, insidious disease which reduces the quality of life of millions of elderly people around the world. AMD is characterised by damage to the retinal pigment epithelium (RPE) in the macula region of the retina. The origins of this multi-factorial disease are complex and still not fully understood. Oxidative stress and mitochondrial imbalance in the RPE are believed to be important factors in the development of AMD. In this review, the regulation of the mitochondrial function and antioxidant stress response by non-coding RNAs (ncRNAs), newly emerged epigenetic factors, is discussed. These molecules include microRNAs, long non-coding RNAs, and circular non-coding RNAs. They act mainly as mRNA suppressors, controllers of other ncRNAs, or by interacting with proteins. We include here examples of these RNA molecules which affect various mitochondrial processes and antioxidant signaling of the cell. As a future prospect, the possibility to manipulate these ncRNAs to strengthen mitochondrial and antioxidant response functions is discussed. Non-coding RNAs could be used as potential diagnostic markers for AMD, and in the future, also as therapeutic targets, either by suppressing or increasing their expression. In addition to AMD, it is possible that non-coding RNAs could be regulators in other oxidative stress-related degenerative diseases.
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Affiliation(s)
- Juha M. T. Hyttinen
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
- Correspondence:
| | - Janusz Blasiak
- Department of Molecular Genetics, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Kai Kaarniranta
- Department of Ophthalmology, Institute of Clinical Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland
- Department of Ophthalmology, Kuopio University Hospital, P.O. Box 100, FI-70029 Kuopio, Finland
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3
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Huang Y, Chen X, Zhuang J, Yu K. The Role of Retinal Dysfunction in Myopia Development. Cell Mol Neurobiol 2022:10.1007/s10571-022-01309-1. [DOI: 10.1007/s10571-022-01309-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 11/16/2022] [Indexed: 11/27/2022]
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4
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Kuznetsova AV, Rzhanova LA, Aleksandrova MA. Small Noncoding RNA in Regulation of Differentiation of Retinal Pigment Epithelium. Russ J Dev Biol 2021. [DOI: 10.1134/s106236042103005x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Intartaglia D, Giamundo G, Conte I. The Impact of miRNAs in Health and Disease of Retinal Pigment Epithelium. Front Cell Dev Biol 2021; 8:589985. [PMID: 33520981 PMCID: PMC7844312 DOI: 10.3389/fcell.2020.589985] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 12/17/2020] [Indexed: 12/17/2022] Open
Abstract
MicroRNAs (miRNAs), a class of non-coding RNAs, are essential key players in the control of biological processes in both physiological and pathological conditions. miRNAs play important roles in fine tuning the expression of many genes, which often have roles in common molecular networks. miRNA dysregulation thus renders cells vulnerable to aberrant fluctuations in genes, resulting in degenerative diseases. The retinal pigment epithelium (RPE) is a monolayer of polarized pigmented epithelial cells that resides between the light-sensitive photoreceptors (PR) and the choriocapillaris. The demanding physiological functions of RPE cells require precise gene regulation for the maintenance of retinal homeostasis under stress conditions and the preservation of vision. Thus far, our understanding of how miRNAs function in the homeostasis and maintenance of the RPE has been poorly addressed, and advancing our knowledge is central to harnessing their potential as therapeutic agents to counteract visual impairment. This review focuses on the emerging roles of miRNAs in the function and health of the RPE and on the future exploration of miRNA-based therapeutic approaches to counteract blinding diseases.
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Affiliation(s)
| | | | - Ivan Conte
- Telethon Institute of Genetics and Medicine, Naples, Italy.,Department of Biology, Polytechnic and Basic Sciences School, University of Naples Federico II, Naples, Italy
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6
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Zhou Y, Yusufu M, Zhang T, Wang J. Silencing of miR-23a attenuates hydrogen peroxide (H 2O 2) induced oxidative damages in ARPE-19 cells by upregulating GLS1: an in vitro study. Cytotechnology 2020; 72:10.1007/s10616-020-00431-6. [PMID: 33123932 PMCID: PMC7695802 DOI: 10.1007/s10616-020-00431-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Accepted: 10/16/2020] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Oxidative damages contributes to age-related macular degeneration (AMD) caused vision blindness, but the molecular mechanisms are still largely unknown. OBJECTIVES This study managed to investigate this issue by conducting in vitro experiments. METHODS Oxidative stress were evaluated by L-012 dye, DHE staining and MDA assay. CCK-8 and colony formation assay were conducted to examine cell proliferation. Cell death was evaluated by trypan blue staining and Annexin V-FITC/PI double staining method through flow cytometry (FCM). The binding sites of miR-23a and GLS1 mRNA were predicted by online miRDB database and validated by dual-luciferase reporter gene system. Real-Time qPCR for miR-23a levels and Western Blot for protein expressions. RESULTS The retinal pigment epithelial (RPE) cells (ARPE-19) were subjected to hydrogen peroxide (H2O2) stimulation to simulate AMD progression in vitro, and we identified a novel miR-23a/glutaminase-1 (GLS1) pathway that regulated H2O2 induced oxidative damages in ARPE-19 cells. Mechanistically, H2O2 induced oxidative stress, inhibited cell proliferation and induced cell death in ARPE-19 cells in a dose- and time-dependent manner. Also, H2O2 stimulation hindered cell invasion, migration and glutamine uptake in ARPE-19 cells. Interestingly, we proved that H2O2 increased miR-23a levels, while downregulated glutaminase-1 (GLS1) in ARPE-19 cells, and miR-23a targeted 3' untranslated region (3'UTR) of GLS1 mRNA for GLS1 degradation. Finally, our data suggested that silencing miR-23a upregulated GLS1 to reverse the detrimental effects of H2O2 treatment on ARPE-19 cells. CONCLUSIONS In general, analysis of the data suggested that miR-23a ablation upregulated GLS1 to attenuate H2O2 stimulation induced oxidative damages in ARPE-19 cells in vitro, and this study broadened our knowledge in this field, which might help to provide novel theranostic signatures for AMD.
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Affiliation(s)
- Yang Zhou
- Department of Ophthalmology, The Fifth Affiliated Hospital of Xinjiang Medical University, Henan Road No. 118, Ürümqi, 830011 Xinjiang China
| | - Meilibanu Yusufu
- Department of Ophthalmology, The Fifth Affiliated Hospital of Xinjiang Medical University, Henan Road No. 118, Ürümqi, 830011 Xinjiang China
| | - Ting Zhang
- Department of Eye Center, Qingdao Municipal Hospital (Group), Jiaozhou Road No.1, Qingdao, 266011 Shandong China
| | - Jing Wang
- Department of Eye Center, Qingdao Municipal Hospital (Group), Jiaozhou Road No.1, Qingdao, 266011 Shandong China
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7
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Ghafouri-Fard S, Shoorei H, Taheri M. Non-coding RNAs are involved in the response to oxidative stress. Biomed Pharmacother 2020; 127:110228. [DOI: 10.1016/j.biopha.2020.110228] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 04/20/2020] [Accepted: 05/03/2020] [Indexed: 01/17/2023] Open
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8
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Oltra M, Vidal-Gil L, Maisto R, Sancho-Pelluz J, Barcia JM. Oxidative stress-induced angiogenesis is mediated by miR-205-5p. J Cell Mol Med 2019; 24:1428-1436. [PMID: 31863632 PMCID: PMC6991635 DOI: 10.1111/jcmm.14822] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 10/17/2019] [Accepted: 11/04/2019] [Indexed: 01/09/2023] Open
Abstract
miR‐205‐5p is known to be involved in VEGF‐related angiogenesis and seems to regulate associated cell signalling pathways, such as cell migration, proliferation and apoptosis. Therefore, several studies have focused on the potential role of miR‐205‐5p as an anti‐angiogenic factor. Vascular proliferation is observed in diabetic retinopathy and the ‘wet’ form of age‐related macular degeneration. Today, the most common treatments against these eye‐related diseases are anti‐VEGF therapies. In addition, both AMD and DR are typically associated with oxidative stress; hence, the use of antioxidant agents is accepted as a co‐adjuvant therapy for these patients. According to previous data, ARPE‐19 cells release pro‐angiogenic factors when exposed to oxidative insult, leading to angiogenesis. Matching these data, results reported here, indicate that miR‐205‐5p is modulated by oxidative stress and regulates VEGFA‐angiogenesis. Hence, miR‐205‐5p is proposed as a candidate against eye‐related proliferative diseases.
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Affiliation(s)
- Maria Oltra
- Escuela de Doctorado, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain.,Neurobiología y Neurofisiología, Facultad de Medicina y Ciencias de la Salud, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain.,Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain
| | - Lorena Vidal-Gil
- Escuela de Doctorado, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain.,Neurobiología y Neurofisiología, Facultad de Medicina y Ciencias de la Salud, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain.,Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain
| | - Rosa Maisto
- Department of Experimental Medicine, Università degli studi della Campania Luigi Vanvitelli, Napoli, Italy
| | - Javier Sancho-Pelluz
- Neurobiología y Neurofisiología, Facultad de Medicina y Ciencias de la Salud, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain.,Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain
| | - Jorge M Barcia
- Neurobiología y Neurofisiología, Facultad de Medicina y Ciencias de la Salud, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain.,Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, Valencia, Spain
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9
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miR302a and 122 are deregulated in small extracellular vesicles from ARPE-19 cells cultured with H 2O 2. Sci Rep 2019; 9:17954. [PMID: 31784665 PMCID: PMC6884596 DOI: 10.1038/s41598-019-54373-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 11/14/2019] [Indexed: 12/21/2022] Open
Abstract
Age related macular degeneration (AMD) is a common retina-related disease leading to blindness. Little is known on the origin of the disease, but it is well documented that oxidative stress generated in the retinal pigment epithelium and choroid neovascularization are closely involved. The study of circulating miRNAs is opening new possibilities in terms of diagnosis and therapeutics. miRNAs can travel associated to lipoproteins or inside small Extracellular Vesicles (sEVs). A number of reports indicate a significant deregulation of circulating miRNAs in AMD and experimental approaches, but it is unclear whether sEVs present a significant miRNA cargo. The present work studies miRNA expression changes in sEVs released from ARPE-19 cells under oxidative conditions (i.e. hydrogen peroxide, H2O2). H2O2 increased sEVs release from ARPE-19 cells. Moreover, 218 miRNAs could be detected in control and H2O2 induced-sEVs. Interestingly, only two of them (hsa-miR-302a and hsa-miR-122) were significantly under-expressed in H2O2-induced sEVs. Results herein suggest that the down regulation of miRNAs 302a and 122 might be related with previous studies showing sEVs-induced neovascularization after oxidative challenge in ARPE-19 cells.
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10
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Banerjee N, Das S, Tripathy S, Bandyopadhyay AK, Sarma N, Bandyopadhyay A, Giri AK. MicroRNAs play an important role in contributing to arsenic susceptibility in the chronically exposed individuals of West Bengal, India. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:28052-28061. [PMID: 31359311 DOI: 10.1007/s11356-019-05980-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 07/12/2019] [Indexed: 06/10/2023]
Abstract
Arsenic exposure by groundwater contamination is a menace which threatens more than 26 million individuals of West Bengal. Interestingly, with similar levels of arsenic exposure, only 15-20% of the population show arsenic-induced skin lesions, the hallmarks of chronic arsenic toxicity, but the rest do not. In this study, our aim was to identify whether microRNAs (miRNA) have any role to play in causing such arsenic susceptibility. Global plasma miRNA profiling was done in 12 arsenic-exposed individuals with skin lesions and 12 exposed individuals without skin lesions. Two hundred two miRNAs were found to be differentially regulated between the two study groups. Results were validated by quantitative real-time PCR in 30 exposed subjects from each of the groups, which showed that among others miR-21, miR-23a, miR-27a, miR-122, miR-124, miR-126, miR-619, and miR-3613 were significantly upregulated and miR-1282 and miR-4530 were downregulated in the skin lesion group compared with the no skin lesion group. Bioinformatic analyses predicted that these altered miRNAs have targets in 7 different biochemical pathways, including glycerophospholipid metabolism, colorectal cancer, glycosphingolipid biosynthesis, T cell receptor signaling, and neurotrophin signaling pathways; glycerophospholipid metabolism pathway being the most enriched pathway. Association study show that these microRNAs contribute significantly to the increased prevalence of other non-dermatological health effects like conjunctival irritations of the eyes and respiratory distress in the study subjects. To our knowledge, this is the first study of its kind involving miRNA expressions contributing to arsenic susceptibility in the exposed population of West Bengal.
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Affiliation(s)
- Nilanjana Banerjee
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, Kolkata, 700032, India.
| | - Subhadeep Das
- Structural Biology and Bioinformatics Division, CSIR-Indian Institute of Chemical Biology, Kolkata, 700032, India
| | - Sucheta Tripathy
- Structural Biology and Bioinformatics Division, CSIR-Indian Institute of Chemical Biology, Kolkata, 700032, India
| | | | - Nilendu Sarma
- Dr B. C. Roy Memorial Hospital for Children, Kolkata, 700054, India
| | - Arun Bandyopadhyay
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, Kolkata, 700032, India
| | - Ashok K Giri
- Molecular Genetics Division, CSIR-Indian Institute of Chemical Biology, Kolkata, 700032, India.
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11
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Literature-Based Enrichment Insights into Redox Control of Vascular Biology. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:1769437. [PMID: 31223421 PMCID: PMC6542245 DOI: 10.1155/2019/1769437] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 04/11/2019] [Accepted: 05/02/2019] [Indexed: 02/07/2023]
Abstract
In cellular physiology and signaling, reactive oxygen species (ROS) play one of the most critical roles. ROS overproduction leads to cellular oxidative stress. This may lead to an irrecoverable imbalance of redox (oxidation-reduction reaction) function that deregulates redox homeostasis, which itself could lead to several diseases including neurodegenerative disease, cardiovascular disease, and cancers. In this study, we focus on the redox effects related to vascular systems in mammals. To support research in this domain, we developed an online knowledge base, DES-RedoxVasc, which enables exploration of information contained in the biomedical scientific literature. The DES-RedoxVasc system analyzed 233399 documents consisting of PubMed abstracts and PubMed Central full-text articles related to different aspects of redox biology in vascular systems. It allows researchers to explore enriched concepts from 28 curated thematic dictionaries, as well as literature-derived potential associations of pairs of such enriched concepts, where associations themselves are statistically enriched. For example, the system allows exploration of associations of pathways, diseases, mutations, genes/proteins, miRNAs, long ncRNAs, toxins, drugs, biological processes, molecular functions, etc. that allow for insights about different aspects of redox effects and control of processes related to the vascular system. Moreover, we deliver case studies about some existing or possibly novel knowledge regarding redox of vascular biology demonstrating the usefulness of DES-RedoxVasc. DES-RedoxVasc is the first compiled knowledge base using text mining for the exploration of this topic.
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12
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Donato L, Bramanti P, Scimone C, Rinaldi C, Giorgianni F, Beranova-Giorgianni S, Koirala D, D'Angelo R, Sidoti A. miRNAexpression profile of retinal pigment epithelial cells under oxidative stress conditions. FEBS Open Bio 2018; 8:219-233. [PMID: 29435412 PMCID: PMC5794457 DOI: 10.1002/2211-5463.12360] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 11/03/2017] [Accepted: 11/24/2017] [Indexed: 12/22/2022] Open
Abstract
Deep analysis of regulative mechanisms of transcription and translation in eukaryotes could improve knowledge of many genetic pathologies such as retinitis pigmentosa (RP). New layers of complexity have recently emerged with the discovery that ‘junk’ DNA is transcribed and, among these, miRNAs have assumed a preponderant role. We compared changes in the expression of miRNAs obtained from whole transcriptome analyses, between two groups of retinal pigment epithelium (RPE) cells, one untreated and the other exposed to the oxidant agent oxidized low‐density lipoprotein (oxLDL), examining four time points (1, 2, 4 and 6 h). We found that 23 miRNAs exhibited altered expression in the treated samples, targeting genes involved in several biochemical pathways, many of them associated to RP for the first time, such as those mediated by insulin receptor signaling and son of sevenless. Moreover, five RP causative genes (KLHL7, RDH11,CERKL, AIPL1 and USH1G) emerged as already validated targets of five altered miRNAs (hsa‐miR‐1307, hsa‐miR‐3064, hsa‐miR‐4709, hsa‐miR‐3615 and hsa‐miR‐637), suggesting a tight connection between induced oxidative stress and RP development and progression. This miRNA expression analysis of oxidative stress‐induced RPE cells has discovered new regulative functions of miRNAs in RP that should lead to the discovery of new ways to regulate the etiopathogenesis of RP.
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Affiliation(s)
- Luigi Donato
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging Division of Medical Biotechnologies and Preventive Medicine University of Messina Italy.,Department of Cutting-Edge Medicine and Therapies Biomolecular Strategies and Neuroscience Section of Neuroscience-applied, Molecular Genetics and Predictive MedicineI.E.M E.S.T. Palermo Italy
| | | | - Concetta Scimone
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging Division of Medical Biotechnologies and Preventive Medicine University of Messina Italy.,Department of Cutting-Edge Medicine and Therapies Biomolecular Strategies and Neuroscience Section of Neuroscience-applied, Molecular Genetics and Predictive MedicineI.E.M E.S.T. Palermo Italy
| | - Carmela Rinaldi
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging Division of Medical Biotechnologies and Preventive Medicine University of Messina Italy
| | | | | | | | - Rosalia D'Angelo
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging Division of Medical Biotechnologies and Preventive Medicine University of Messina Italy
| | - Antonina Sidoti
- Department of Biomedical and Dental Sciences and Morphofunctional Imaging Division of Medical Biotechnologies and Preventive Medicine University of Messina Italy.,Department of Cutting-Edge Medicine and Therapies Biomolecular Strategies and Neuroscience Section of Neuroscience-applied, Molecular Genetics and Predictive MedicineI.E.M E.S.T. Palermo Italy
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13
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Li L, Hou A, Gao X, Zhang J, Zhang L, Wang J, Li H, Song Y. Lentivirus-mediated miR-23a overexpression induces trophoblast cell apoptosis through inhibiting X-linked inhibitor of apoptosis. Biomed Pharmacother 2017; 94:412-417. [PMID: 28772220 DOI: 10.1016/j.biopha.2017.07.082] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 07/14/2017] [Accepted: 07/19/2017] [Indexed: 12/21/2022] Open
Abstract
Preeclampsia (PE) is a pregnancy-specific disorder representing a major cause of maternal and perinatal morbidity and mortality. MicroRNAs (miRNAs) have emerged as critical regulators in PE. However, the precise role of miRNAs in PE remains poorly understood. In this study, we aimed to investigate the potential role of miR-23a and the underlying mechanism in regulating trophoblast cell apoptosis. We found a significant increase of miR-23a expression in placental tissues from PE patients. Lentivirus-mediated miR-23a overexpression significantly induced apoptosis in trophoblast cells in vitro. X-linked inhibitor of apoptosis (XIAP) was identified as a target gene of miR-23a by bioinformatics analysis and dual-luciferase reporter assay. Overexpression of miR-23a significantly inhibited XIAP expression. Knockdown of XIAP also induced trophoblast cell apoptosis. Moreover, restoration of XIAP expression significantly abolished the miR-23 overexpression-induced trophoblast cell apoptosis. Taken together, our study demonstrates that miR-23a induces trophoblast cell apoptosis by inhibiting XIAP, which may contribute to PE. Our findings provide novel insights into understanding the pathogenesis of PE and suggest a potential therapeutic target in PE.
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Affiliation(s)
- Lichun Li
- Department of Obstetrics, Affiliated Hospital, Yan'an University, Yan'an, Shaanxi 716000, China
| | - Aiqin Hou
- Department of Obstetrics, Affiliated Hospital, Yan'an University, Yan'an, Shaanxi 716000, China
| | - Xia Gao
- Department of Obstetrics, Affiliated Hospital, Yan'an University, Yan'an, Shaanxi 716000, China
| | - Juan Zhang
- Department of Obstetrics, Affiliated Hospital, Yan'an University, Yan'an, Shaanxi 716000, China
| | - Liping Zhang
- Department of Obstetrics, Affiliated Hospital, Yan'an University, Yan'an, Shaanxi 716000, China
| | - Juan Wang
- Department of Obstetrics, Affiliated Hospital, Yan'an University, Yan'an, Shaanxi 716000, China
| | - Hua Li
- Department of Obstetrics, Affiliated Hospital, Yan'an University, Yan'an, Shaanxi 716000, China.
| | - Yanbin Song
- Department of Cardiology, Affiliated Hospital, Yan'an University, Yan'an, Shaanxi 716000, China; The College of Life Science, Northwest University, Xi'an, Shaanxi 710069, China.
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14
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Expression of miR-23a induces telomere shortening and is associated with poor clinical outcomes in patients with coronary artery disease. Clin Sci (Lond) 2017. [PMID: 28646123 DOI: 10.1042/cs20170242] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Telomeric repeat binding factor (TRF) 2 (TRF2) plays an important role in telomere maintenance. miR-23a may directly inhibit TRF2 expression, thereby, inducing telomere shortening and cellular senescence. The present study aimed to determine whether miR-23a and TRF2 are expressed in patients with coronary artery disease (CAD), and whether pitavastatin might affect these levels. The present study included 104 patients with CAD and 50 controls. Patients with CAD were randomly divided into two subgroups (a moderate lipid lowering therapy (LLT) group and an aggressive LLT group). Peripheral blood mononuclear cells (PBMCs) were taken from patients with CAD and from controls at baseline and after 12 months. Levels of miR-23a were higher in the CAD group than in the controls. Levels of TRF2 protein were lower in the CAD group than in the controls. Our randomized clinical study showed that aggressive LLT decreased miR-23a and increased TRF2 levels, whereas moderate LLT generated no change in these levels. Our transfected cell model showed that miR-23a controlled TRF2 expression. After a mean follow-up of 339 days, cardiovascular events were associated with high miR-23a, low TRF2 or low relative telomere length. Multivariate analysis showed that levels of miR-23a (RR: 4.9, 95% CI: 1.9-14.3) were a strong predictor of cardiovascular events after adjustment for baseline characteristics. In conclusion, elevated levels of miR-23a play an important role in coronary atherosclerosis via down-regulated TRF2, and may provide important prognostic information in patients with CAD. Additionally, aggressive LLT may prevent telomere erosion via down-regulated miR-23a.
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15
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Millan MJ. Linking deregulation of non-coding RNA to the core pathophysiology of Alzheimer's disease: An integrative review. Prog Neurobiol 2017; 156:1-68. [PMID: 28322921 DOI: 10.1016/j.pneurobio.2017.03.004] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 03/09/2017] [Accepted: 03/09/2017] [Indexed: 02/06/2023]
Abstract
The human genome encodes a vast repertoire of protein non-coding RNAs (ncRNA), some specific to the brain. MicroRNAs, which interfere with the translation of target mRNAs, are of particular interest since their deregulation has been implicated in neurodegenerative disorders like Alzheimer's disease (AD). However, it remains challenging to link the complex body of observations on miRNAs and AD into a coherent framework. Using extensive graphical support, this article discusses how a diverse panoply of miRNAs convergently and divergently impact (and are impacted by) core pathophysiological processes underlying AD: neuroinflammation and oxidative stress; aberrant generation of β-amyloid-42 (Aβ42); anomalies in the production, cleavage and post-translational marking of Tau; impaired clearance of Aβ42 and Tau; perturbation of axonal organisation; disruption of synaptic plasticity; endoplasmic reticulum stress and the unfolded protein response; mitochondrial dysfunction; aberrant induction of cell cycle re-entry; and apoptotic loss of neurons. Intriguingly, some classes of miRNA provoke these cellular anomalies, whereas others act in a counter-regulatory, protective mode. Moreover, changes in levels of certain species of miRNA are a consequence of the above-mentioned anomalies. In addition to miRNAs, circular RNAs, piRNAs, long non-coding RNAs and other types of ncRNA are being increasingly implicated in AD. Overall, a complex mesh of deregulated and multi-tasking ncRNAs reciprocally interacts with core pathophysiological mechanisms underlying AD. Alterations in ncRNAs can be detected in CSF and the circulation as well as the brain and are showing promise as biomarkers, with the ultimate goal clinical exploitation as targets for novel modes of symptomatic and course-altering therapy.
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Affiliation(s)
- Mark J Millan
- Centre for Therapeutic Innovation in Neuropsychiatry, institut de recherche Servier, 125 chemin de ronde, 78290 Croissy sur Seine, France.
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