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Zhu J, Pan E, Pang L, Zhou X, Che Y, Liu Z. MiR-497-5p ameliorates the oxyhemoglobin-induced subarachnoid hemorrhage injury in vitro by targeting orthodenticle homeobox protein 1 (Otx1) to activate the Nrf2/HO-1 pathway. Mol Genet Genomics 2024; 299:45. [PMID: 38635011 DOI: 10.1007/s00438-024-02137-2] [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: 07/27/2023] [Accepted: 04/01/2024] [Indexed: 04/19/2024]
Abstract
Subarachnoid hemorrhage (SAH) is a neurological disorder that severely damages the brain and causes cognitive impairment. MicroRNAs are critical regulators in a variety of neurological diseases. MiR-497-5p has been found to be downregulated in the aneurysm vessel walls obtained from patients with aneurysmal subarachnoid hemorrhage, but its functions and mechanisms in SAH have not been reported. Therefore, this study was designed to investigate the effect of miR-497-5p and its related mechanisms in SAH. We established an in vitro SAH model by exposing PC12 cells to oxyhemoglobin (oxyHb). We found that miR-497-5p was downregulated in SAH serum and oxyHb-treated PC12 cells, and its overexpression inhibited the oxyHb-induced apoptosis, inflammatory response and oxidative stress via activation of the Nrf2 pathway. Mechanistically, the targeting relationship between miR-497-5p and Otx1 was verified by luciferase reporter assays. Moreover, Otx1 upregulation abolished the protective effects of miR-497-5p upregulation against oxyHb-induced apoptosis, inflammation and oxidative stress in PC12 cells. Collectively, our findings indicate that miR-497-5p could inhibit the oxyHb-induced SAH damage by targeting Otx1 to activate the Nrf2/HO-1 pathway, which provides a potential therapeutic target for SAH treatment.
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Affiliation(s)
- Jun Zhu
- Department of Neurosurgery, Jingjiang People's Hospital, 28 Zhongzhou Road, Jingjiang, Jiangsu, 214500, People's Republic of China
| | - Enyu Pan
- Department of Neurosurgery, Jingjiang People's Hospital, 28 Zhongzhou Road, Jingjiang, Jiangsu, 214500, People's Republic of China
| | - Lujun Pang
- Department of Neurosurgery, Jingjiang People's Hospital, 28 Zhongzhou Road, Jingjiang, Jiangsu, 214500, People's Republic of China
| | - Xiwei Zhou
- Department of Neurosurgery, Jingjiang People's Hospital, 28 Zhongzhou Road, Jingjiang, Jiangsu, 214500, People's Republic of China
| | - Yanjun Che
- Department of Neurosurgery, Jingjiang People's Hospital, 28 Zhongzhou Road, Jingjiang, Jiangsu, 214500, People's Republic of China.
| | - Zhao Liu
- Department of Neurosurgery, Jingjiang People's Hospital, 28 Zhongzhou Road, Jingjiang, Jiangsu, 214500, People's Republic of China.
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2
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Guo M, Zhu Y, Shi Y, Meng X, Dong X, Zhang H, Wang X, Du M, Yan H. Inhibition of ferroptosis promotes retina ganglion cell survival in experimental optic neuropathies. Redox Biol 2022; 58:102541. [PMID: 36413918 PMCID: PMC9679710 DOI: 10.1016/j.redox.2022.102541] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 10/04/2022] [Accepted: 11/12/2022] [Indexed: 11/16/2022] Open
Abstract
Retinal ganglion cell (RGC) death is a hallmark of traumatic optic neuropathy, glaucoma, and other optic neuropathies that result in irreversible vision loss. However, therapeutic strategies for rescuing RGC loss still remain challenging, and the molecular mechanism underlying RGC loss has not been fully elucidated. Here, we highlight the role of ferroptosis, a non-apoptotic form of programmed cell death characterized by iron-dependent lethal lipid peroxides accumulation, in RGC death using an experimental model of glaucoma and optic nerve crush (ONC). ONC treatment resulted in significant downregulation of glutathione peroxidase 4 (GPx4) and system xc(-) cystine/glutamate antiporter (xCT) in the rat retina, accompanied by increased lipid peroxide and iron levels. The reduction of GPx4 expression in RGCs after ONC was confirmed by laser-capture microdissection and PCR. Transmission electron microscopy (TEM) revealed alterations in mitochondrial morphology, including increased membrane density and reduced mitochondrial cristae in RGCs after ONC. Notably, the ferroptosis inhibitor ferrostatin-1 (Fer-1) significantly promoted RGC survival and preserved retinal function in ONC and microbead-induced glaucoma mouse models. In addition, compared to the apoptosis inhibitor Z-VAD-FMK, Fer-1 showed better effect in rescuing RGCs death in ONC retinas. Mechanistically, we found the downregulation of GPx4 mainly occurred in the mitochondrial compartment, accompanied by increased mitochondrial reactive oxygen species (ROS) and lipid peroxides. The mitochondria-selective antioxidant MitoTEMPO attenuated RGC loss after ONC, implicating mitochondrial ROS and lipid peroxides as major mechanisms in ferroptosis-induced RGC death in ONC retinas. Notably, administering Fer-1 effectively prevented the production of mitochondrial lipid peroxides, the impairment of mitochondrial adenosine 5'-triphosphate (ATP) production, and the downregulation of mitochondrial genes, such as mt-Cytb and MT-ATP6, in ONC retinas. Our findings suggest that ferroptosis is a major form of regulated cell death for RGCs in experimental glaucoma and ONC models and suggesting targeting mitochondria-dependent ferroptosis as a protective strategy for RGC injuries in optic neuropathies.
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Affiliation(s)
- Miao Guo
- Department of Ophthalmology, Tianjin Medical University General Hospital, 300052, Tianjin, China,Laboratory of Molecular Ophthalmology and Tianjin Key Laboratory of Ocular Trauma, Tianjin Medical University, 300070, Tianjin, China
| | - Yanfang Zhu
- Department of Ophthalmology, Tianjin Medical University General Hospital, 300052, Tianjin, China,Laboratory of Molecular Ophthalmology and Tianjin Key Laboratory of Ocular Trauma, Tianjin Medical University, 300070, Tianjin, China
| | - Ying Shi
- Department of Ophthalmology, Tianjin Medical University General Hospital, 300052, Tianjin, China,Laboratory of Molecular Ophthalmology and Tianjin Key Laboratory of Ocular Trauma, Tianjin Medical University, 300070, Tianjin, China,Department of Pharmacology and Tianjin Key Laboratory of Inflammation Biology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China
| | - Xiangda Meng
- Department of Ophthalmology, Tianjin Medical University General Hospital, 300052, Tianjin, China,Laboratory of Molecular Ophthalmology and Tianjin Key Laboratory of Ocular Trauma, Tianjin Medical University, 300070, Tianjin, China
| | - Xue Dong
- Department of Ophthalmology, Tianjin Medical University General Hospital, 300052, Tianjin, China,Laboratory of Molecular Ophthalmology and Tianjin Key Laboratory of Ocular Trauma, Tianjin Medical University, 300070, Tianjin, China
| | - Haokun Zhang
- Department of Ophthalmology, Tianjin Medical University General Hospital, 300052, Tianjin, China,Laboratory of Molecular Ophthalmology and Tianjin Key Laboratory of Ocular Trauma, Tianjin Medical University, 300070, Tianjin, China
| | - Xiaohong Wang
- Department of Ophthalmology, Tianjin Medical University General Hospital, 300052, Tianjin, China,Laboratory of Molecular Ophthalmology and Tianjin Key Laboratory of Ocular Trauma, Tianjin Medical University, 300070, Tianjin, China,Department of Pharmacology and Tianjin Key Laboratory of Inflammation Biology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China,Corresponding author. Tianjin Medical University, No. 22, Qixiangtai Road, Tianjin, 300070, China.
| | - Mei Du
- Department of Ophthalmology, Tianjin Medical University General Hospital, 300052, Tianjin, China,Laboratory of Molecular Ophthalmology and Tianjin Key Laboratory of Ocular Trauma, Tianjin Medical University, 300070, Tianjin, China,Department of Pharmacology and Tianjin Key Laboratory of Inflammation Biology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, School of Basic Medical Sciences, Tianjin Medical University, 300070, Tianjin, China,Corresponding author. Tianjin Medical University, No. 22, Qixiangtai Road, Tianjin, 300070, China.
| | - Hua Yan
- Department of Ophthalmology, Tianjin Medical University General Hospital, 300052, Tianjin, China,Laboratory of Molecular Ophthalmology and Tianjin Key Laboratory of Ocular Trauma, Tianjin Medical University, 300070, Tianjin, China,School of Medicine, Nankai University, 300071, Tianjin, China,Corresponding author. Tianjin Medical University General Hospital, No. 154, Anshan Road, Tianjin, 300052, China.
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3
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Sun TT, Li XM, Zhu JY, Yao W, Yang TJ, Meng XR, Yao J, Jiang Q. Regulatory effect of long-stranded non-coding RNA-CRNDE on neurodegeneration during retinal ischemia-reperfusion. Heliyon 2022; 8:e10994. [PMID: 36276743 PMCID: PMC9579004 DOI: 10.1016/j.heliyon.2022.e10994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 09/05/2022] [Accepted: 10/04/2022] [Indexed: 11/06/2022] Open
Abstract
Ischemia/reperfusion (I/R) injury is a common pathological mechanism involved in many ocular diseases. I/R is characterized by microvascular dysfunction and neurodegeneration. However, the mechanisms of neurodegeneration induced by I/R remain largely unknown. This study showed that the expression of long non-coding RNA-CRNDE was significantly upregulated after retinal ischemia-reperfusion (RIR). LncRNA-CRNDE knockdown alleviated retinal neurodegeneration induced by RIR injury, as shown by decreased reactive gliosis and reduced retinal cells loss. Furthermore, lncRNA-CRNDE knockdown directly regulated Müller cell function and indirectly affected RGC function in vitro. In addition, lncRNA-CRNDE knockdown led to a significant reduction in the release of several cytokines after RIR. This study suggests that lncRNA-CRNDE is a promising therapeutic target for RIR.
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Affiliation(s)
- Ting-Ting Sun
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China,The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Xiu-Miao Li
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China,The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Jun-Ya Zhu
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China,The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Wen Yao
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China,The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Tian-Jing Yang
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China,The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Xiang-Rui Meng
- Faculty of Art and Science, Queens University, Kingston, Ontario, Canada
| | - Jin Yao
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China,The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China,Corresponding author.
| | - Qin Jiang
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing, China,The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China,Corresponding author.
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4
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Xie D, Hu J, Wu T, Cao K, Luo X. Potential Biomarkers and Drugs for Nanoparticle-Induced Cytotoxicity in the Retina: Based on Regulation of Inflammatory and Apoptotic Genes. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19095664. [PMID: 35565057 PMCID: PMC9099825 DOI: 10.3390/ijerph19095664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 05/03/2022] [Accepted: 05/05/2022] [Indexed: 02/01/2023]
Abstract
The eye is a superficial organ directly exposed to the surrounding environment. Thus, the toxicity of nanoparticle (NP) pollutants to the eye may be potentially severer relative to inner organs and needs to be monitored. However, the cytotoxic mechanisms of NPs on the eyes remain rarely reported. This study was to screen crucial genes associated with NPs-induced retinal injuries. The gene expression profiles in the retina induced by NPs [GSE49371: Au20, Au100, Si20, Si100; GSE49048: presumptive therapeutic concentration (PTC) TiO2, 10PTC TiO2] and commonly used retinal cell injury models (optic nerve injury procedure: GSE55228, GSE120257 and GSE131486; hypoxia exposure: GSE173233, GSE151610, GSE135844; H2O2 exposure: GSE122270) were obtained from the Gene Expression Omnibus database. A total of 381 differentially expressed genes (including 372 mRNAs and 9 lncRNAs) were shared between NP exposure and the optic nerve injury model when they were compared with their corresponding controls. Function enrichment analysis of these overlapped genes showed that Tlr2, Crhbp, Ccl2, Cxcl10, Fas, Irf8, Socs3, Stat3, Gbp6, Casp1 and Syk were involved in inflammatory- and apoptotic-related processes. Protein-protein interaction network analysis revealed eight of them (Tlr2, Ccl2, Cxcl10, Irf8, Socs3, Stat3, Casp1 and Syk) were hub genes. Moreover, Socs3 could interact with upstream Stat3 and downstream Fas/Casp1/Ccl2/Cxcl10; Irf8 could interact with upstream Tlr2, Syk and downstream Cxcl10. Competing endogenous RNAs network analysis identified Socs3, Irf8, Gdf6 and Crhbp could be regulated by lncRNAs and miRNAs (9330175E14Rik-mmu-miR-762-Socs3, 6430562O15Rik-mmu-miR-207-Irf8, Gm9866-mmu-miR-669b-5p-Gdf6, 4933406C10Rik-mmu-miR-9-5p-Crhbp). CMap-CTD database analyses indicated the expression levels of Tlr2, Ccl2, Cxcl10, Fas, Irf8, Socs3, Stat3, Gbp6, Casp1 and Syk could be reversed by folic acid. Crhbp and Gdf6 were also verified to be downregulated, while Tlr2, Ccl2, Irf8, Socs3 and Stat3 were upregulated in hypoxia/H2O2-induced retinal injury models. Hereby, our findings suggest that Crhbp, Irf8, Socs3 and Gdf6 as well as their upstream mRNAs, lncRNAs and miRNAs may be potential monitoring biomarkers and therapeutic targets for NP-induced retinal injuries. Folic acid supplementation may be a preventive and therapeutic approach.
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Affiliation(s)
- Dongli Xie
- College of Textile and Clothing Engineering, Soochow University, 199 Ren-Ai Road, Suzhou 215123, China; (D.X.); (J.H.)
| | - Jianchen Hu
- College of Textile and Clothing Engineering, Soochow University, 199 Ren-Ai Road, Suzhou 215123, China; (D.X.); (J.H.)
| | - Tong Wu
- Shanghai Jing Rui Yang Industrial Co., Ltd., 3188 Xiupu Road, Pudong New Area, Shanghai 200122, China;
| | - Kangli Cao
- Shanghai Institute of Spacecraft Equipment, 251 Huaning Road, Shanghai 200240, China;
| | - Xiaogang Luo
- College of Textile and Clothing Engineering, Soochow University, 199 Ren-Ai Road, Suzhou 215123, China; (D.X.); (J.H.)
- Correspondence: ; Tel.: +86-0512-67162531
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5
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Wang SK, Cepko CL. Targeting Microglia to Treat Degenerative Eye Diseases. Front Immunol 2022; 13:843558. [PMID: 35251042 PMCID: PMC8891158 DOI: 10.3389/fimmu.2022.843558] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 01/31/2022] [Indexed: 12/29/2022] Open
Abstract
Microglia have been implicated in many degenerative eye disorders, including retinitis pigmentosa, age-related macular degeneration, glaucoma, diabetic retinopathy, uveitis, and retinal detachment. While the exact roles of microglia in these conditions are still being discovered, evidence from animal models suggests that they can modulate the course of disease. In this review, we highlight current strategies to target microglia in the eye and their potential as treatments for both rare and common ocular disorders. These approaches include depleting microglia with chemicals or radiation, reprogramming microglia using homeostatic signals or other small molecules, and inhibiting the downstream effects of microglia such as by blocking cytokine activity or phagocytosis. Finally, we describe areas of future research needed to fully exploit the therapeutic value of microglia in eye diseases.
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Affiliation(s)
- Sean K. Wang
- Department of Ophthalmology, Byers Eye Institute, Stanford University School of Medicine, Palo Alto, CA, United States
| | - Constance L. Cepko
- Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, MA, United States
- Department of Ophthalmology, Harvard Medical School, Boston, MA, United States
- Howard Hughes Medical Institute, Chevy Chase, MD, United States
- *Correspondence: Constance L. Cepko,
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6
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Zhao Y, Yu S, Huang Z, Chen J, Zhang X, Qu C. Therapeutic Effects of Sirtuin 1 Activator on Glaucoma Mice and the Regulation Mechanism of Mitogen-Activated Protein Kinase Pathway. J BIOMATER TISS ENG 2022. [DOI: 10.1166/jbt.2022.2874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The study focused on the therapeutic effects of resveratrol, sirtuin 1 (Sirt1) activator, on glaucoma, and its influence on mitogen-activated protein kinase (MAPK) pathway. Specifically, C57BL/6 mice were used and the glaucoma mouse model was established by intraperitoneal injection
of N-methyl-D-aspartate (NMDA). According to different treatment methods, they were randomly rolled into 3 groups: control group (no treatment), model group (glaucoma mouse model), and resveratrol (Res) group (intraperitoneal injection of 20 mg/kg resveratrol solution on the basis of model
group). The intraocular pressure was measured, and Sirt1 mRNA and protein expression was detected using reverse transcription-polymerase chain reaction (RT-PCR) and Western blot. Subsequently, hematoxylin-eosin staining was used to observe histopathological morphology, the immunofluorescence
labeling was used to identify retinal survival ganglia, and Terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling assay (TUNEL) and Western blot were for apoptotic cells determination and the expression of c-Jun N-terminal kinase (JNK), extracellular regulated protein
kinase (ERK), and p38 protein in mitogen-activated protein kinase (MAPK) pathway, respectively. The model group showed lower intraocular pressure, Sirt1 mRNA and protein expression, number of survival retinal ganglion cells (RGCs), and thinner retina versus the control group (P <
0.05), but number of apoptotic RGCs and the phosphorylation levels of the three kinds of protein were higher (P < 0.05), and it exhibited no notable difference from the Res group (P > 0.05). Also, compared with the control group, the number of survival RGCs in the Res group
was reduced (P < 0.05), but no notable difference was noted in the retinal thickness, the number of apoptotic RGCs, and the phosphorylation levels of the three kinds of protein (P > 0.05). In conclusion, resveratrol, the Sirt1 activator, can inhibit RGCs apoptosis through
the MAPK signaling pathway and improve the pathological manifestations of glaucoma animal models, thus playing a protective role of the retina.
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Affiliation(s)
- Yuee Zhao
- Department of Ophthalmology, Lishui Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, 323000, Zhejiang, China
| | - Songping Yu
- Department of Ophthalmology, Lishui Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, 323000, Zhejiang, China
| | - Zhenqiang Huang
- Clinical Laboratory, Lishui People’s Hospital, The Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, 323000, Zhejiang, China
| | - Jiaqi Chen
- Clinical Laboratory, Lishui People’s Hospital, The Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, 323000, Zhejiang, China
| | - Xuying Zhang
- Clinical Laboratory, Lishui People’s Hospital, The Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, 323000, Zhejiang, China
| | - Chunsheng Qu
- Clinical Laboratory, Lishui People’s Hospital, The Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, 323000, Zhejiang, China
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7
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van der Vlist M, Ramos MIP, van den Hoogen LL, Hiddingh S, Timmerman LM, de Hond TAP, Kaan ED, van der Kroef M, Lebbink RJ, Peters FMA, Khoury-Hanold W, Fritsch-Stork R, Radstake TRDJ, Meyaard L. Signaling by the inhibitory receptor CD200R is rewired by type I interferon. Sci Signal 2021; 14:eabb4324. [PMID: 34637328 DOI: 10.1126/scisignal.abb4324] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
CD200 receptor 1 (CD200R) is an inhibitory immunoreceptor that suppresses Toll-like receptor (TLR)–induced cytokine production through the adaptor protein Dok2 and the GTPase activating protein (GAP) p120-RasGAP, which can be cleaved during mild cellular stress. We found that in the presence of cleaved p120-RasGAP, CD200R lost its capacity to inhibit phosphorylation of ribosomal S6 protein (rpS6), suggesting the reduced activity of mammalian target of rapamycin complex 1 (mTORC1). Furthermore, treatment of human peripheral blood mononuclear cells (PBMC) with interferon-α (IFN-α) resulted in increased amounts of cleaved p120-RasGAP. Upon pretreatment of cells with increasing concentrations of IFN-α, CD200R switched from inhibiting to potentiating the TLR7- and TLR8-induced expression of the gene encoding IFN-γ, a cytokine that is important for innate and adaptive immunity and is implicated in systemic lupus erythematosus (SLE) pathogenesis. PBMC from patients with SLE, a prototypic type I IFN disease, had an increased abundance of cleaved p120-RasGAP compared to that in cells from healthy controls. In a subset of SLE patients, CD200R stopped functioning as an inhibitory receptor or potentiated TLR-induced IFNG mRNA expression. Thus, our data suggest that type I IFN rewires CD200R signaling to be proinflammatory, which could contribute to the perpetuation of inflammation in patients with SLE.
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Affiliation(s)
- Michiel van der Vlist
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Oncode Institute, Utrecht, Netherlands
| | - M Inês Pascoal Ramos
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Oncode Institute, Utrecht, Netherlands
| | - Lucas L van den Hoogen
- Center for Translational Immunology, Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Sanne Hiddingh
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Laura M Timmerman
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Oncode Institute, Utrecht, Netherlands
| | - Titus A P de Hond
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Oncode Institute, Utrecht, Netherlands
| | - Ellen D Kaan
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Oncode Institute, Utrecht, Netherlands
| | - Maarten van der Kroef
- Center for Translational Immunology, Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Robert Jan Lebbink
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Florence M A Peters
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - William Khoury-Hanold
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Ruth Fritsch-Stork
- Center for Translational Immunology, Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Timothy R D J Radstake
- Center for Translational Immunology, Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Linde Meyaard
- Center for Translational Immunology, Department of Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Oncode Institute, Utrecht, Netherlands
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8
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García-Bermúdez MY, Freude KK, Mouhammad ZA, van Wijngaarden P, Martin KK, Kolko M. Glial Cells in Glaucoma: Friends, Foes, and Potential Therapeutic Targets. Front Neurol 2021; 12:624983. [PMID: 33796062 PMCID: PMC8007906 DOI: 10.3389/fneur.2021.624983] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 01/26/2021] [Indexed: 12/15/2022] Open
Abstract
Glaucoma is the second leading cause of blindness worldwide, affecting ~80 million people by 2020 (1, 2). The condition is characterized by a progressive loss of retinal ganglion cells (RGCs) and their axons accompanied by visual field loss. The underlying pathophysiology of glaucoma remains elusive. Glaucoma is recognized as a multifactorial disease, and lowering intraocular pressure (IOP) is the only treatment that has been shown to slow the progression of the condition. However, a significant number of glaucoma patients continue to go blind despite intraocular pressure-lowering treatment (2). Thus, the need for alternative treatment strategies is indisputable. Accumulating evidence suggests that glial cells play a significant role in supporting RGC function and that glial dysfunction may contribute to optic nerve disease. Here, we review recent advances in understanding the role of glial cells in the pathophysiology of glaucoma. A particular focus is on the dynamic and essential interactions between glial cells and RGCs and potential therapeutic approaches to glaucoma by targeting glial cells.
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Affiliation(s)
| | - Kristine K Freude
- Department for Veterinary and Animal Science, University of Copenhagen, Copenhagen, Denmark
| | - Zaynab A Mouhammad
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Peter van Wijngaarden
- Center for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC, Australia.,Ophthalmology, Department of Surgery, University of Melbourne, Melbourne, VIC, Australia
| | - Keith K Martin
- Center for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC, Australia.,Ophthalmology, Department of Surgery, University of Melbourne, Melbourne, VIC, Australia
| | - Miriam Kolko
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark.,Department of Ophthalmology, Copenhagen University Hospital, Rigshospitalet-Glostrup, Glostrup, Denmark
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9
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Berdugo M, Delaunay K, Naud MC, Guegan J, Moulin A, Savoldelli M, Picard E, Radet L, Jonet L, Djerada Z, Gozalo C, Daruich A, Beltrand J, Jeanny JC, Kermorvant-Duchemin E, Crisanti P, Polak M, Behar-Cohen F. The antidiabetic drug glibenclamide exerts direct retinal neuroprotection. Transl Res 2021; 229:83-99. [PMID: 33080394 DOI: 10.1016/j.trsl.2020.10.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/25/2020] [Accepted: 10/15/2020] [Indexed: 02/03/2023]
Abstract
Sulfonylureas, widely used as hypoglycemic agents in adults with type 2 diabetes, have neuroprotective effects in preclinical models of central nervous system injury, and in children with neuropsychomotor impairments linked to neonatal diabetes secondary to ATP-sensitive potassium channel mutations. In the human and rodent retina, we show that the glibenclamide-activated channel sulfonylurea receptor 1 (SUR1) is expressed in the retina and enriched in the macula; we also show that it colocalizes with the potassium channel Kir6.2, and with the cation channel transporter TRPM4. Glibenclamide (glyburide), administered at doses that did not decrease the glycemia, or injected directly into the eye, protected the structure and the function of the retina in various models of retinal injury that recapitulate the pathogenic neurodegenerative events in the diabetic retina. The downregulation of SUR1 using a siRNA suppressed the neuroprotective effects of glibenclamide on excitotoxic stress-induced cell death. The glibenclamide effects include the transcriptional regulation of antioxidant and neuroprotective genes. Ocular glibenclamide could be repurposed for diabetic retinopathy.
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Affiliation(s)
- Marianne Berdugo
- Université de Paris, Faculté de Santé, Paris, France; Inserm UMRS 1138, Team 17: Physiopathology of Ocular Diseases-Therapeutic Innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université, UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France
| | - Kimberley Delaunay
- Université de Paris, Faculté de Santé, Paris, France; Inserm UMRS 1138, Team 17: Physiopathology of Ocular Diseases-Therapeutic Innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université, UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France
| | - Marie-Christine Naud
- Université de Paris, Faculté de Santé, Paris, France; Inserm UMRS 1138, Team 17: Physiopathology of Ocular Diseases-Therapeutic Innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université, UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France
| | - Justine Guegan
- iCONICS Corefacility, ICM Institut du Cerveau et de la Moelle épinière, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - Alexandre Moulin
- Department of Ophthalmology of University of Lausanne, Jules Gonin Hospital, Fondation Asile des Aveugles, Lausanne, Switzerland
| | - Michèle Savoldelli
- Université de Paris, Faculté de Santé, Paris, France; Inserm UMRS 1138, Team 17: Physiopathology of Ocular Diseases-Therapeutic Innovations, Centre de Recherche des Cordeliers, Paris, France
| | - Emilie Picard
- Université de Paris, Faculté de Santé, Paris, France; Inserm UMRS 1138, Team 17: Physiopathology of Ocular Diseases-Therapeutic Innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université, UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France
| | - Lolita Radet
- Université de Paris, Faculté de Santé, Paris, France; Inserm UMRS 1138, Team 17: Physiopathology of Ocular Diseases-Therapeutic Innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université, UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France
| | - Laurent Jonet
- Université de Paris, Faculté de Santé, Paris, France; Inserm UMRS 1138, Team 17: Physiopathology of Ocular Diseases-Therapeutic Innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université, UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France
| | - Zoubir Djerada
- Laboratoire de Pharmacologie-Toxicologie, Hôpital Maison Blanche, centre hospitalier et universitaire de Reims, Reims, France
| | - Claire Gozalo
- Laboratoire de Pharmacologie-Toxicologie, Hôpital Maison Blanche, centre hospitalier et universitaire de Reims, Reims, France
| | - Alejandra Daruich
- Université de Paris, Faculté de Santé, Paris, France; Inserm UMRS 1138, Team 17: Physiopathology of Ocular Diseases-Therapeutic Innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université, UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France; AP-HP, Service d'Ophtalmologie, Hôpital Universitaire Necker-Enfants Malades, Paris, France
| | - Jacques Beltrand
- Université de Paris, Faculté de Santé, Paris, France; AP-HP, Service d'Endocrinologie, Gynécologie et Diabétologie Pédiatriques, Hôpital Universitaire Necker-Enfants Malades, Paris, France; Inserm U1016, Institut Cochin, Paris, France; Inserm UMR 1163, Institut Imagine, Université de Paris, Paris, France
| | - Jean-Claude Jeanny
- Université de Paris, Faculté de Santé, Paris, France; Inserm UMRS 1138, Team 17: Physiopathology of Ocular Diseases-Therapeutic Innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université, UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France
| | - Elsa Kermorvant-Duchemin
- Université de Paris, Faculté de Santé, Paris, France; Inserm UMRS 1138, Team 17: Physiopathology of Ocular Diseases-Therapeutic Innovations, Centre de Recherche des Cordeliers, Paris, France; AP-HP, Service de Néonatalogie, Hôpital Universitaire Necker-Enfants Malades, Paris, France
| | - Patricia Crisanti
- Université de Paris, Faculté de Santé, Paris, France; Inserm UMRS 1138, Team 17: Physiopathology of Ocular Diseases-Therapeutic Innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université, UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France
| | - Michel Polak
- Université de Paris, Faculté de Santé, Paris, France; AP-HP, Service d'Endocrinologie, Gynécologie et Diabétologie Pédiatriques, Hôpital Universitaire Necker-Enfants Malades, Paris, France; Inserm U1016, Institut Cochin, Paris, France; Inserm UMR 1163, Institut Imagine, Université de Paris, Paris, France
| | - Francine Behar-Cohen
- Université de Paris, Faculté de Santé, Paris, France; Inserm UMRS 1138, Team 17: Physiopathology of Ocular Diseases-Therapeutic Innovations, Centre de Recherche des Cordeliers, Paris, France; Sorbonne Université, UMR_S 1138, Centre de Recherche des Cordeliers, Paris, France; AP-HP, OphtalmoPôle, Hôpital Cochin, Paris, France.
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10
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Huang W, Lan Q, Jiang L, Yan W, Tang F, Shen C, Huang H, Zhong H, Lv J, Zeng S, Li M, Mo Z, Hu B, Liang N, Chen Q, Zhang M, Xu F, Cui L. Fasudil attenuates glial cell-mediated neuroinflammation via ERK1/2 and AKT signaling pathways after optic nerve crush. Mol Biol Rep 2020; 47:8963-8973. [PMID: 33161529 DOI: 10.1007/s11033-020-05953-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 10/28/2020] [Indexed: 11/28/2022]
Abstract
To investigate the functional role of fasudil in optic nerve crush (ONC), and further explore its possible molecular mechanism. After ONC injury, the rats were injected intraperitoneally either with fasudil or normal saline once a day until euthanized. RGCs survival was assessed by retrograde labeling with FluoroGold. Retinal glial cells activation and population changes (GFAP, iba-1) were measured by immunofluorescence. The expressions of cleaved caspase 3 and 9, p-ERK1/2 and p-AKT were detected by western blot. The levels of the pro-inflammatory cytokines were determined using real-time polymerase chain reaction. Fasudil treatment inhibited RGCs apoptosis and reduced RGCs loss demonstrated by the decreased apoptosis-associated proteins expression and the increased fluorogold labeling of RGCs after ONC, respectively. In addition, the ONC + fasudil group compared had a significantly lower expression of GFAP and iba1 compared with the ONC group. The levels of pro-inflammatory cytokines were significantly reduced in the ONC + fasudil group than in the ONC group. Furthermore, the phosphorylation levels of ERK1/2 and AKT (p-ERK1/2 and p-AKT) were obviously elevated by the fasudil treatment. Our study demonstrated that fasudil attenuated glial cell-mediated neuroinflammation by up-regulating the ERK1/2 and AKT signaling pathways in rats ONC models. We conclude that fasudil may be a novel treatment for traumatic optic neuropathy.
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Affiliation(s)
- Wei Huang
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi, China.,Guangxi Medical University, Nanning, 530021, China
| | - Qianqian Lan
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi, China
| | - Li Jiang
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi, China
| | - Wenya Yan
- Guangzhou Medical University, Guangzhou, 511436, China
| | - Fen Tang
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi, China
| | - Chaolan Shen
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi, China
| | - Hui Huang
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi, China
| | - Haibin Zhong
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi, China
| | - Jian Lv
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi, China
| | - Siming Zeng
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi, China
| | - Min Li
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi, China
| | - Zhongxiang Mo
- Laboratory Animal Center, Guangxi Medical University, Nanning, 530021, China
| | - Bing Hu
- Laboratory Animal Center, Guangxi Medical University, Nanning, 530021, China
| | - Ning Liang
- Laboratory Animal Center, Guangxi Medical University, Nanning, 530021, China
| | - Qi Chen
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi, China
| | - Mingyuan Zhang
- Laboratory Animal Center, Guangxi Medical University, Nanning, 530021, China
| | - Fan Xu
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi, China.
| | - Ling Cui
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, 530021, Guangxi, China.
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11
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Sun H, He X, Tao X, Hou T, Chen M, He M, Liao H. The CD200/CD200R signaling pathway contributes to spontaneous functional recovery by enhancing synaptic plasticity after stroke. J Neuroinflammation 2020; 17:171. [PMID: 32473633 PMCID: PMC7260848 DOI: 10.1186/s12974-020-01845-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 05/19/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Spontaneous functional recovery occurs during the acute phase after stroke onset, but this intrinsic recovery remains limited. Therefore, exploring the mechanism underlying spontaneous recovery and identifying potential strategies to promote functional rehabilitation after stroke are very important. The CD200/CD200R signaling pathway plays an important role in neurological recovery by modulating synaptic plasticity during multiple brain disorders. However, the effect and mechanism of action of the CD200/CD200R pathway in spontaneous functional recovery after stroke are unclear. METHODS In this study, we used a transient middle cerebral artery occlusion (MCAO) model in rats to investigate the function of CD200/CD200R signaling in spontaneous functional recovery after stroke. We performed a battery of behavioral tests (Longa test, adhesive removal test, limb-use asymmetry test, and the modified grip-traction test) to evaluate sensorimotor function after intracerebroventricular (i.c.v.) injection with CD200 fusion protein (CD200Fc) or CD200R blocking antibody (CD200R Ab) post-stroke. Density and morphology of dendritic spines were analyzed by Golgi staining. Microglia activation was evaluated by immunofluorescence staining. Western blot was used to detect the levels of protein and the levels of mRNA were measured by qPCR. RESULTS Our study demonstrated that sensorimotor function, synaptic proteins, and structures were gradually recovered and CD200R was transiently upregulated in ipsilateral cortex after stroke. Synapse-related proteins and dendritic spines were preserved, accompanied by sensorimotor functional recovery, after stereotaxic CD200Fc injection post-stroke. In addition, CD200Fc restrained microglia activation and pro-inflammatory factor release (such as Il-1, Tnf-α, and Il-6) after MCAO. On the contrary, CD200R Ab aggravated sensory function recovery in adhesive removal test and further promoted microglia activation and pro-inflammatory factor release (such as Il-1) after MCAO. The immune-modulatory effect of CD200/CD200R signaling might be exerted partly by its inhibition of the MAPK pathway. CONCLUSIONS This study provides evidence that the CD200/CD200R signaling pathway contributes to spontaneous functional recovery by enhancing synaptic plasticity via inhibition of microglia activation and inflammatory factor release.
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Affiliation(s)
- Hao Sun
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China
| | - Xinran He
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China
| | - Xia Tao
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China
| | - Tingting Hou
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China
| | - Mingming Chen
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China
| | - Meijun He
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China
| | - Hong Liao
- Jiangsu Key laboratory of Drug Screening, China Pharmaceutical University, 24 Tongjiaxiang Street, Nanjing, 210009, China.
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12
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Zhang M, Chen L, Xu F, Jiang L, Yan W, Kunwar B, Tang F, Yang K, Shen C, Huang H, Lv J, Qin C, Wu X, Zeng S, Li M, Zhong S, Chen Q. Involvement of Upregulated P53-Induced Death Domain Protein in Retinal Ganglion Cells Apoptosis After Optic Nerve Crush. Curr Mol Med 2019; 20:51-59. [PMID: 31533600 DOI: 10.2174/1566524019666190918160032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 08/22/2019] [Accepted: 09/03/2019] [Indexed: 12/14/2022]
Abstract
Purpose:
Retinal ganglion cells (RGCs) apoptosis is a common characteristic
of optic neuropathies. p53-induced protein with a death domain (PIDD) is a well-known
regulator of genotoxic stress-induced apoptosis, which is constitutively cleaved into
three main fragments: PIDD-N, PIDD-C and PIDD-CC. Thus, we aim to determine the
physiological relevance of PIDD in RGCs apoptosis in an optic nerve crush (ONC)
model.
Methods:
All animals were evenly randomized into four groups: sham-control group,
con-siRNA group, ONC group, and PIDD-siRNA group (ONC +PIDD-siRNA).
Expressions of PIDD, caspase-2, Brn3a and tBid in ONC model were analyzed by
Western blot and immunofluorescence. Mean densities of RGCs/mm2 were calculated
with Fluoro-Gold (FG). Moreover, we tested the effect of PIDD-siRNA on ONC-induced
RGCs apoptosis using TUNEL staining.
Results:
The level of full-length PIDD was weakly present and showed no significant
differences at any time points. PIDD-CC and PIDD-C were significantly up-regulated in
the retina at 3 days after ONC. Meanwhile, the expression of PIDD was significantly
increased in Brn3a (a marker of RGCs) positive cells, indicating that the localization of
PIDD appeared to be confined to RGCs. Furthermore, inhibition of PIDD prevented
RGCs apoptosis by inhibiting caspase-2 and tBid activation.
Conclusions:
Taken together, PIDD may play a crucial role in RGCs apoptosis after
ONC, and this process may be relevant to caspase-2 and tBid.
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Affiliation(s)
- Mingyuan Zhang
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Lifei Chen
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Fan Xu
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Li Jiang
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Wenya Yan
- Guangzhou Medical University, Guangzhou 511436, China
| | - Bibhav Kunwar
- Guangzhou Medical University, Guangzhou 511436, China
| | - Fen Tang
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Ke Yang
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Chaolan Shen
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Hui Huang
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Jian Lv
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Chen Qin
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Xiaonian Wu
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Siming Zeng
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Min Li
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Shan Zhong
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
| | - Qi Chen
- Department of Ophthalmology, People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, Guangxi, China
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13
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Anti-angiogenic and anti-inflammatory effects of CD200-CD200R1 axis in oxygen-induced retinopathy mice model. Inflamm Res 2019; 68:945-955. [PMID: 31444514 DOI: 10.1007/s00011-019-01276-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 08/09/2019] [Accepted: 08/16/2019] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE In this study, the expression changes and the potential effects of CD200 and its receptors during the process of retinal neovascularization (RNV) development had been detected, using a classic oxygen-induced retinopathy (OIR) mice model and CD200Fc (a CD200R1 agonist) intravitreal injection. MATERIALS AND METHODS 7 day postnatal (P7) C57BL/6J mice were raised in hyperoxia incubators with 75±2% oxygen for 5 days, and returned to room air at P12. All animals were subdivided into three groups: normoxia control, OIR, and OIR+CD200Fc group. The mice of OIR+CD200Fc group were intravitreal injected with CD200Fc (2μg/μL, 0.5μL) at P12. Retinas and vitreous samples were harvested at P17. The expression and localization of CD200 and its receptors were analyzed by Western blot, quantitative real-time polymerase chain reaction (qRT-PCR), enzyme-linked immunosorbent assay (ELISA), and retinal whole-mount immunofluorescence. To investigate the effects of CD200Fc treatment, vascular endothelial growth factor (VEGF)-A, platelet-derived growth factor (PDGF)-BB, pro-inflammatory cytokines, NV area, and microglial activation were detected respectively. RESULTS In OIR group, both protein and RNA levels of CD200 and CD200R1 were significantly up-regulated. The increased CD200 and CD200R1 were co-localized with Alex594-labeled Griffonia simplicifolia isolectin B4 (IB4) on vascular endothelial cells in NV area of OIR samples, and CD200R1 was co-expressed with ionized calcium-bind adapter molecule 1 (iba1) on microglia in OIR samples at the same time. CD200Fc intravitreal injection could significantly reduce the release of VEGF-A, PDGF-BB, and pro-inflammatory cytokines; shrink the NV area; and inhibit the activation of microglia in OIR mice. CONCLUSION These findings suggested that the up-regulation of CD200 and CD200R1 was closely related to RNV development, and the antiangiogenic effects of CD200Fc in OIR model might be realized by inhibition of inflammatory response and microglia activation. The results may provide a new therapeutic target for RNV diseases.
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14
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Rashid K, Akhtar-Schaefer I, Langmann T. Microglia in Retinal Degeneration. Front Immunol 2019; 10:1975. [PMID: 31481963 PMCID: PMC6710350 DOI: 10.3389/fimmu.2019.01975] [Citation(s) in RCA: 200] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 08/05/2019] [Indexed: 12/18/2022] Open
Abstract
The retina is a complex tissue with multiple cell layers that are highly ordered. Its sophisticated structure makes it especially sensitive to external or internal perturbations that exceed the homeostatic range. This necessitates the continuous surveillance of the retina for the detection of noxious stimuli. This task is mainly performed by microglia cells, the resident tissue macrophages which confer neuroprotection against transient pathophysiological insults. However, under sustained pathological stimuli, microglial inflammatory responses become dysregulated, often worsening disease pathology. In this review, we provide an overview of recent studies that depict microglial responses in diverse retinal pathologies that have degeneration and chronic immune reactions as key pathophysiological components. We also discuss innovative immunomodulatory therapy strategies that dampen the detrimental immunological responses to improve disease outcome.
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Affiliation(s)
- Khalid Rashid
- Laboratory for Experimental Immunology of the Eye, Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Isha Akhtar-Schaefer
- Laboratory for Experimental Immunology of the Eye, Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Thomas Langmann
- Laboratory for Experimental Immunology of the Eye, Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany.,Center for Molecular Medicine Cologne, Cologne, Germany
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15
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Cheng J, Chen M, Zhu JX, Li CF, Zhang QP, Geng D, Liu Q, Yi LT. FGF-2 signaling activation in the hippocampus contributes to the behavioral and cellular responses to puerarin. Biochem Pharmacol 2019; 168:91-99. [PMID: 31251937 DOI: 10.1016/j.bcp.2019.06.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 06/24/2019] [Indexed: 12/11/2022]
Abstract
Puerarin, a well-studied isoflavone isolated from Pueraria lobata, produces an antidepressant-like effect. Fibroblast growth factor-2 (FGF-2) is essentially required in the central nervous system as it acts as both a neurotrophic or anti-inflammatory regulator for the proliferation, differentiation and apoptosis of neurons. There is evidence that FGF-2 holds great promise for therapeutic intervention for depression. However, nothing was known about the involvement of FGF-2 in the antidepressant-like effect of puerarin. In the present study, the underlying mechanism of puerarin was evaluated in chronic stress induced depressive-like mice. The results indicated that puerarin treatment was effective to attenuate anhedonia and despair behaviors caused by chronic stress, as the sucrose preference and the immobility time were improved by puerarin. In addition, the results demonstrated that puerarin increased the expression of FGF-2 in the hippocampus. On the contrary, SU5402, an FGFR1 inhibitor, infusion into the brain could not only block the antidepressant-like effect of puerarin, but also abolish the effect of puerarin on hippocampal neurogenesis enhancement and neuroinflammation inhibition. Taken together, these findings provide new insights into the mechanism that the antidepressant-like actions of puerarin require FGF-2/FGFR signaling for the regulation of neurogenesis and neuroinflammation.
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Affiliation(s)
- Jie Cheng
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, Fujian Province, PR China
| | - Min Chen
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, Fujian Province, PR China
| | - Ji-Xiao Zhu
- Research Center of Natural Resources of Chinese Medicinal Materials and Ethnic Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, Jiangxi Province, PR China
| | - Cheng-Fu Li
- Xiamen Hospital of Traditional Chinese Medicine, Xiamen 361009, Fujian Province, PR China
| | - Qiu-Ping Zhang
- Xiamen Hospital of Traditional Chinese Medicine, Xiamen 361009, Fujian Province, PR China
| | - Di Geng
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, Fujian Province, PR China
| | - Qing Liu
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, Fujian Province, PR China
| | - Li-Tao Yi
- Department of Chemical and Pharmaceutical Engineering, College of Chemical Engineering, Huaqiao University, Xiamen 361021, Fujian Province, PR China; Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen 361021, Fujian Province, PR China.
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16
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Ye D, Yang Y, Lu X, Xu Y, Shi Y, Chen H, Huang J. Spatiotemporal Expression Changes of PACAP and Its Receptors in Retinal Ganglion Cells After Optic Nerve Crush. J Mol Neurosci 2018; 68:465-474. [PMID: 30415445 DOI: 10.1007/s12031-018-1203-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 10/30/2018] [Indexed: 12/14/2022]
Abstract
Pituitary adenylate cyclase-activating polypeptide (PACAP) has been demonstrated to play a crucial part in protecting retinal ganglion cells (RGCs) from apoptosis in various retinal injury animal models. PACAP has two basic groups of receptors: PACAP receptor type 1 (PAC1R) and vasoactive intestinal polypeptide/PACAP receptors (VPAC1R and VPAC2R). However, few studies illustrated the spatial and temporal expression changes of endogenous PACAP and its receptors in a rodent optic nerve crush (ONC) model. In this study, a significant upregulation of PACAP and PAC1R in the retina after ONC was observed in both protein and RNA levels. The peak level of PACAP and PAC1R expression could be found on the fifth day following ONC. In addition, immunofluorescent labeling indicated that PACAP and PAC1R were localized mainly in RGCs. On the contrary, VPAC1R and VPAC2R were hardly detected in the retina. Collectively, the spatiotemporal expression of PACAP and its high-affinity receptor PAC1R were remarkably changed after ONC, and mainly expressed in the ganglion cell layer of the retina. This suggested that the upregulation of PACAP and PAC1R may play a vital role in RGC death after ONC.
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Affiliation(s)
- Dan Ye
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 Xianlienan Road, Guangzhou, 510060, China
| | - Yao Yang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 Xianlienan Road, Guangzhou, 510060, China
| | - Xi Lu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 Xianlienan Road, Guangzhou, 510060, China
| | - Yue Xu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 Xianlienan Road, Guangzhou, 510060, China
| | - Yuxun Shi
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 Xianlienan Road, Guangzhou, 510060, China
| | - Hailiu Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 Xianlienan Road, Guangzhou, 510060, China
| | - Jingjing Huang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, 54 Xianlienan Road, Guangzhou, 510060, China.
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