1
|
Solar Fernandez V, Marino M, Fiocchetti M. Neuroglobin in Retinal Neurodegeneration: A Potential Target in Therapeutic Approaches. Cells 2021; 10:cells10113200. [PMID: 34831423 PMCID: PMC8621852 DOI: 10.3390/cells10113200] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/09/2021] [Accepted: 11/15/2021] [Indexed: 12/12/2022] Open
Abstract
Retinal neurodegeneration affects an increasing number of people worldwide causing vision impairments and blindness, reducing quality of life, and generating a great economic challenge. Due to the complexity of the tissue, and the diversity of retinal neurodegenerative diseases in terms of etiology and clinical presentation, so far, there are no cures and only a few early pathological markers have been identified. Increasing efforts have been made to identify and potentiate endogenous protective mechanisms or to abolish detrimental stress responses to preserve retinal structure and function. The discovering of the intracellular monomeric globin neuroglobin (NGB), found at high concentration in the retina, has opened new possibilities for the treatment of retinal disease. Indeed, the NGB capability to reversibly bind oxygen and its neuroprotective function against several types of insults including oxidative stress, ischemia, and neurodegenerative conditions have raised the interest in the possible role of the globin as oxygen supplier in the retina and as a target for retinal neurodegeneration. Here, we provide the undercurrent knowledge on NGB distribution in retinal layers and the evidence about the connection between NGB level modulation and the functional outcome in terms of retinal neuroprotection to provide a novel therapeutic/preventive target for visual pathway degenerative disease.
Collapse
Affiliation(s)
- Virginia Solar Fernandez
- Department of Science, University Roma Tre, Viale G. Marconi, 00146 Rome, Italy; (V.S.F.); (M.M.)
- Neuroendocrinology, Metabolism, and Neuropharmacology Unit, IRCCS Santa Lucia Foundation, 00143 Rome, Italy
| | - Maria Marino
- Department of Science, University Roma Tre, Viale G. Marconi, 00146 Rome, Italy; (V.S.F.); (M.M.)
- Neuroendocrinology, Metabolism, and Neuropharmacology Unit, IRCCS Santa Lucia Foundation, 00143 Rome, Italy
| | - Marco Fiocchetti
- Department of Science, University Roma Tre, Viale G. Marconi, 00146 Rome, Italy; (V.S.F.); (M.M.)
- Neuroendocrinology, Metabolism, and Neuropharmacology Unit, IRCCS Santa Lucia Foundation, 00143 Rome, Italy
- Correspondence: ; Tel.: +39-06-5733-6455; Fax: +39-06-5733-6321
| |
Collapse
|
2
|
Cellular Prion Protein (PrPc): Putative Interacting Partners and Consequences of the Interaction. Int J Mol Sci 2020; 21:ijms21197058. [PMID: 32992764 PMCID: PMC7583789 DOI: 10.3390/ijms21197058] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/20/2020] [Accepted: 09/23/2020] [Indexed: 02/08/2023] Open
Abstract
Cellular prion protein (PrPc) is a small glycosylphosphatidylinositol (GPI) anchored protein most abundantly found in the outer leaflet of the plasma membrane (PM) in the central nervous system (CNS). PrPc misfolding causes neurodegenerative prion diseases in the CNS. PrPc interacts with a wide range of protein partners because of the intrinsically disordered nature of the protein’s N-terminus. Numerous studies have attempted to decipher the physiological role of the prion protein by searching for proteins which interact with PrPc. Biochemical characteristics and biological functions both appear to be affected by interacting protein partners. The key challenge in identifying a potential interacting partner is to demonstrate that binding to a specific ligand is necessary for cellular physiological function or malfunction. In this review, we have summarized the intracellular and extracellular interacting partners of PrPc and potential consequences of their binding. We also briefly describe prion disease-related mutations at the end of this review.
Collapse
|
3
|
Ramlogan-Steel CA, Murali A, Andrzejewski S, Dhungel B, Steel JC, Layton CJ. Gene therapy and the adeno-associated virus in the treatment of genetic and acquired ophthalmic diseases in humans: Trials, future directions and safety considerations. Clin Exp Ophthalmol 2019; 47:521-536. [PMID: 30345694 DOI: 10.1111/ceo.13416] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 10/04/2018] [Accepted: 10/15/2018] [Indexed: 12/27/2022]
Abstract
Voretigene neparvovec-rzyl was recently approved for the treatment of Leber congenital amaurosis, and the use of gene therapy for eye disease is attracting even greater interest. The eye has immune privileged status, is easily accessible, requires a reduced dosage of therapy due to its size and is highly compartmentalized, significantly reducing systemic spread. Adeno-associated virus (AAV), with its low pathogenicity, prolonged expression profile and ability to transduce multiple cell types, has become the leading gene therapy vector. Target diseases have moved beyond currently untreatable inherited dystrophies to common, partially treatable acquired conditions such as exudative age-related macular degeneration and glaucoma, but use of the technology in these conditions imposes added obligations for caution in vector design. This review discusses the current status of AAV gene therapy trials in genetic and acquired ocular diseases, and explores new scientific developments, which could help ensure effective and safe use of the therapy in the future.
Collapse
Affiliation(s)
- Charmaine A Ramlogan-Steel
- LVF Ophthalmology Research Centre, Translational Research Institute, Brisbane, Australia.,Greenslopes Clinical School, Faculty of Medicine, University of Queensland, Greenslopes Hospital, Brisbane, Australia.,Medical and Applied Science, Central Queensland University, School of Health, Rockhampton, Australia
| | - Aparna Murali
- LVF Ophthalmology Research Centre, Translational Research Institute, Brisbane, Australia.,Greenslopes Clinical School, Faculty of Medicine, University of Queensland, Greenslopes Hospital, Brisbane, Australia
| | - Slawomir Andrzejewski
- LVF Ophthalmology Research Centre, Translational Research Institute, Brisbane, Australia.,Greenslopes Clinical School, Faculty of Medicine, University of Queensland, Greenslopes Hospital, Brisbane, Australia
| | - Bijay Dhungel
- Greenslopes Clinical School, Faculty of Medicine, University of Queensland, Greenslopes Hospital, Brisbane, Australia
| | - Jason C Steel
- Medical and Applied Science, Central Queensland University, School of Health, Rockhampton, Australia
| | - Christopher J Layton
- LVF Ophthalmology Research Centre, Translational Research Institute, Brisbane, Australia.,Greenslopes Clinical School, Faculty of Medicine, University of Queensland, Greenslopes Hospital, Brisbane, Australia
| |
Collapse
|
4
|
Fiocchetti M, Cipolletti M, Brandi V, Polticelli F, Ascenzi P. Neuroglobin and friends. J Mol Recognit 2017; 30. [DOI: 10.1002/jmr.2654] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 06/05/2017] [Accepted: 06/14/2017] [Indexed: 01/02/2023]
Affiliation(s)
| | | | | | - Fabio Polticelli
- Dipartimento di Scienze; Università Roma Tre; Rome Italy
- Istituto Nazionale di Fisica Nucleare; Sezione dell'Università Roma Tre; Rome Italy
| | - Paolo Ascenzi
- Laboratorio Interdipartimentale di Microscopia Elettronica; Università Roma Tre; Rome Italy
| |
Collapse
|
5
|
Cwerman-Thibault H, Lechauve C, Augustin S, Roussel D, Reboussin É, Mohammad A, Degardin-Chicaud J, Simonutti M, Liang H, Brignole-Baudouin F, Maron A, Debeir T, Corral-Debrinski M. Neuroglobin Can Prevent or Reverse Glaucomatous Progression in DBA/2J Mice. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2017; 5:200-220. [PMID: 28540323 PMCID: PMC5430497 DOI: 10.1016/j.omtm.2017.04.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 04/21/2017] [Indexed: 01/12/2023]
Abstract
Mitochondrial dysfunction is responsible for hereditary optic neuropathies. We wished to determine whether preserving mitochondrial bioenergetics could prevent optic neuropathy in a reliable model of glaucoma. DBA/2J mice exhibit elevated intraocular pressure, progressive degeneration of their retinal ganglion cells, and optic neuropathy that resembles glaucoma. We established that glaucoma in these mice is directly associated with mitochondrial dysfunction: respiratory chain activity was compromised in optic nerves 5 months before neuronal loss began, and the amounts of some mitochondrial proteins were reduced in retinas of glaucomatous mice. One of these proteins is neuroglobin, which has a neuroprotective function. Therefore, we investigated whether gene therapy aimed at restoring neuroglobin levels in the retina via ocular administration of an adeno-associated viral vector could reduce neuronal degeneration. The approach of treating 2-month-old mice impeded glaucoma development: few neurons died and respiratory chain activity and visual cortex activity were comparable to those in young, asymptomatic mice. When the treatment was performed in 8-month-old mice, the surviving neurons acquired new morphologic and functional properties, leading to the preservation of visual cortex activity and respiratory chain activity. The beneficial effects of neuroglobin in DBA/2J retinas confirm this protein to be a promising candidate for treating glaucoma.
Collapse
Affiliation(s)
- Hélène Cwerman-Thibault
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
- PROTECT, INSERM, Université Paris Diderot, Sorbonne Paris Cité, 75019 Paris, France
| | - Christophe Lechauve
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
- Department of Hematology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA
| | - Sébastien Augustin
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
| | - Delphine Roussel
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
- Institut du Cerveau et de la Moelle Épinière, Hôpital Pitié Salpêtrière, 75013 Paris, France
| | - Élodie Reboussin
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
| | - Ammara Mohammad
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
- Genomic Paris Centre, Institut de Biologie de l’Ecole normale supérieure, 46 rue d’Ulm, 75230 Paris, France
| | - Julie Degardin-Chicaud
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
| | - Manuel Simonutti
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
| | - Hong Liang
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
- CHNO des Quinze-Vingts, DHU Sight Restore, INSERM-DHOS CIC, 28 rue de Charenton, 75012 Paris, France
| | - Françoise Brignole-Baudouin
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
| | - Anne Maron
- Sanofi-Aventis, 94400 Vitry-sur-Seine, France
| | - Thomas Debeir
- Departments of Evaluation and Expertise Strategy, Science Policy and External Innovation, Sanofi, 75008 Paris, France
| | - Marisol Corral-Debrinski
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
- PROTECT, INSERM, Université Paris Diderot, Sorbonne Paris Cité, 75019 Paris, France
- Corresponding author: Marisol Corral-Debrinski, PROTECT, INSERM (UMR1141), Université Paris Diderot, Sorbonne Paris Cité, 48 Boulevard Sérurier, 75019 Paris, France.
| |
Collapse
|
6
|
Ascenzi P, di Masi A, Leboffe L, Fiocchetti M, Nuzzo MT, Brunori M, Marino M. Neuroglobin: From structure to function in health and disease. Mol Aspects Med 2016; 52:1-48. [DOI: 10.1016/j.mam.2016.10.004] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 10/27/2016] [Accepted: 10/27/2016] [Indexed: 01/01/2023]
|
7
|
Critical re-evaluation of neuroglobin expression reveals conserved patterns among mammals. Neuroscience 2016; 337:339-354. [DOI: 10.1016/j.neuroscience.2016.07.042] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/26/2016] [Accepted: 07/26/2016] [Indexed: 01/08/2023]
|
8
|
Baez E, Echeverria V, Cabezas R, Ávila-Rodriguez M, Garcia-Segura LM, Barreto GE. Protection by Neuroglobin Expression in Brain Pathologies. Front Neurol 2016; 7:146. [PMID: 27672379 PMCID: PMC5018480 DOI: 10.3389/fneur.2016.00146] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 08/29/2016] [Indexed: 11/21/2022] Open
Abstract
Astrocytes play an important role in physiological, metabolic, and structural functions, and when impaired, they can be involved in various pathologies including Alzheimer, focal ischemic stroke, and traumatic brain injury. These disorders involve an imbalance in the blood flow and nutrients such as glucose and lactate, leading to biochemical and molecular changes that cause neuronal damage, which is followed by loss of cognitive and motor functions. Previous studies have shown that astrocytes are more resilient than neurons during brain insults as a consequence of their more effective antioxidant systems, transporters, and enzymes, which made them less susceptible to excitotoxicity. In addition, astrocytes synthesize and release different protective molecules for neurons, including neuroglobin, a member of the globin family of proteins. After brain injury, neuroglobin expression is induced in astrocytes. Since neuroglobin promotes neuronal survival, its increased expression in astrocytes after brain injury may represent an endogenous neuroprotective mechanism. Here, we review the role of neuroglobin in the central nervous system, its relationship with different pathologies, and the role of different factors that regulate its expression in astrocytes.
Collapse
Affiliation(s)
- Eliana Baez
- Departamento de Nutrición y Bioquimica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | | | - Ricardo Cabezas
- Departamento de Nutrición y Bioquimica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | - Marco Ávila-Rodriguez
- Departamento de Nutrición y Bioquimica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
| | | | - George E. Barreto
- Departamento de Nutrición y Bioquimica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá D.C., Colombia
- Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Santiago, Chile
| |
Collapse
|
9
|
Characterization of molecular mechanism of neuroglobin binding to cytochrome c: A surface plasmon resonance and isothermal titration calorimetry study. INORG CHEM COMMUN 2015. [DOI: 10.1016/j.inoche.2015.10.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
10
|
Ilmjärv S, Reimets R, Hundahl CA, Luuk H. Effect of light on global gene expression in the neuroglobin-deficient mouse retina. Biomed Rep 2014; 2:780-786. [PMID: 25279145 DOI: 10.3892/br.2014.364] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2014] [Accepted: 09/03/2014] [Indexed: 01/18/2023] Open
Abstract
Several previous studies have raised controversy over the functional role of neuroglobin (Ngb) in the retina. Certain studies indicate a significant impact of Ngb on retinal physiology, whereas others are conflicting. The present is an observational study that tested the effect of Ngb deficiency on gene expression in dark- and light-adapted mouse retinas. Large-scale gene expression profiling was performed using GeneChip® Mouse Exon 1.0 ST arrays and the results were compared to publicly available data sets. The lack of Ngb was found to have a minor effect on the light-induced retinal gene expression response. In addition, there was no increase in the expression of marker genes associated with hypoxia, endoplasmic reticulum-stress and oxidative stress in the Ngb-deficient retina. By contrast, several genes were identified that appeared to be differentially expressed between the genotypes when the effect of light was ignored. The present study indicates that Ngb deficiency does not lead to major alternations in light-dependent gene expression response, but leads to subtle systemic differences of a currently unknown functional significance.
Collapse
Affiliation(s)
- Sten Ilmjärv
- Department of Physiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu 50411, Estonia ; Quretec Ltd, University of Tartu, Tartu 50411, Estonia
| | - Riin Reimets
- Department of Physiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu 50411, Estonia ; The Centre for Disease Models and Biomedical Imaging, University of Tartu, Tartu 50411, Estonia
| | - Christian Ansgar Hundahl
- Department of Physiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu 50411, Estonia ; The Centre for Disease Models and Biomedical Imaging, University of Tartu, Tartu 50411, Estonia ; Department of Clinical Biochemistry, Bispebjerg Hospital, Copenhagen 2400, Denmark
| | - Hendrik Luuk
- Department of Physiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu 50411, Estonia ; The Centre for Disease Models and Biomedical Imaging, University of Tartu, Tartu 50411, Estonia
| |
Collapse
|
11
|
Tiwari PB, Astudillo L, Miksovska J, Wang X, Li W, Darici Y, He J. Quantitative study of protein-protein interactions by quartz nanopipettes. NANOSCALE 2014; 6:10255-10263. [PMID: 25060094 DOI: 10.1039/c4nr02964j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In this report, protein-modified quartz nanopipettes were used to quantitatively study protein-protein interactions in attoliter sensing volumes. As shown by numerical simulations, the ionic current through the conical-shaped nanopipette is very sensitive to the surface charge variation near the pore mouth. With the appropriate modification of negatively charged human neuroglobin (hNgb) onto the inner surface of a nanopipette, we were able to detect concentration-dependent current change when the hNgb-modified nanopipette tip was exposed to positively charged cytochrome c (Cyt c) with a series of concentrations in the bath solution. Such current change is due to the adsorption of Cyt c to the inner surface of the nanopipette through specific interactions with hNgb. In contrast, a smaller current change with weak concentration dependence was observed when Cyt c was replaced with lysozyme, which does not specifically bind to hNgb. The equilibrium dissociation constant (KD) for the Cyt c-hNgb complex formation was derived and the value matched very well with the result from surface plasmon resonance measurement. This is the first quantitative study of protein-protein interactions by a conical-shaped nanopore based on charge sensing. Our results demonstrate that nanopipettes can potentially be used as a label-free analytical tool to quantitatively characterize protein-protein interactions.
Collapse
|
12
|
Neuroglobin gene therapy prevents optic atrophy and preserves durably visual function in Harlequin mice. Mol Ther 2014; 22:1096-1109. [PMID: 24622090 DOI: 10.1038/mt.2014.44] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 03/06/2014] [Indexed: 01/13/2023] Open
Abstract
Neuroglobin (NGB) is considered as an endogenous neuroprotective molecule against stroke, since the protein alleviates the adverse effects of hypoxic and ischemic insults. We previously demonstrated the functional link between NGB and mitochondria since it is required for respiratory chain function. Thus, here, we evaluated the relevance of this effect in the Harlequin (Hq) mouse strain, which exhibits retinal ganglion cell (RGC) loss and optic atrophy due to a respiratory chain complex I (CI) defect. A twofold decrease of NGB amounts was observed in Hq retinas. We constructed a recombinant adeno-associated virus which combines to the mouse NGB open reading frame, its 5' and 3'UTR, for guarantying mRNA stability and translation capacity. The vector was administrated intravitreally to Hq mice and NGB expression was stable for up to 7 months without negative effect on retinal architecture or function. On the contrary, RGCs and their axons were substantially preserved from degeneration; consequently, CI activity in optic nerves was protected conferring improvements in vision. Hence, we established that NGB prevents respiratory chain impairment, therefore, protecting visual function otherwise compromised by mitochondrial energetic failure.
Collapse
|
13
|
Lechauve C, Augustin S, Roussel D, Sahel JA, Corral-Debrinski M. Neuroglobin involvement in visual pathways through the optic nerve. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2013; 1834:1772-8. [PMID: 23639750 DOI: 10.1016/j.bbapap.2013.04.014] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 02/26/2013] [Accepted: 04/15/2013] [Indexed: 11/19/2022]
Abstract
Neuroglobin is a member of the globin superfamily proposed to be only expressed in neurons and involved in neuronal protection from hypoxia or oxidative stress. A significant fraction of the protein localizes within the mitochondria and is directly associated with mitochondrial metabolism and integrity. The retina is the site of the highest concentration for neuroglobin and has been reported to be up to 100-fold higher than in the brain. Since neuroglobin was especially abundant in retinal ganglion cell layer, we investigated its abundance in optic nerves. Remarkably in optic nerves, neuroglobin is observed, as expected, in retinal ganglion cell axon profiles but also astrocyte processes, in physiological conditions, possess high levels of the protein. Neuroglobin mRNA and protein levels are ~10-fold higher in optic nerves than in retinas, indicating an important accumulation of neuroglobin in these support cells. Additionally, neuroglobin levels increase in Müller cells during reactive gliosis in response to eye injury. This suggests the pivotal role of neuroglobin in retinal glia involved in neuronal support and/or healing. This article is part of a Special Issue entitled: Oxygen Binding and Sensing Proteins.
Collapse
|
14
|
Kamioka Y, Fujikawa C, Ogai K, Sugitani K, Watanabe S, Kato S, Wakasugi K. Functional characterization of fish neuroglobin: zebrafish neuroglobin is highly expressed in amacrine cells after optic nerve injury and can translocate into ZF4 cells. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2013; 1834:1779-88. [PMID: 23481873 DOI: 10.1016/j.bbapap.2013.02.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2012] [Revised: 01/31/2013] [Accepted: 02/13/2013] [Indexed: 01/08/2023]
Abstract
Neuroglobin (Ngb) is a recently discovered vertebrate heme protein that is expressed in the brain and can reversibly bind oxygen. Mammalian Ngb is involved in neuroprotection under conditions of oxidative stress, such as ischemia and reperfusion. We previously found that zebrafish Ngb can penetrate the mammalian cell membrane. In the present study, we investigated the functional characteristics of fish Ngb by using the zebrafish cell line ZF4 and zebrafish retina. We found that zebrafish Ngb translocates into ZF4 cells, but cannot protect ZF4 cells against cell death induced by hydrogen peroxide. Furthermore, we demonstrated that a chimeric ZHHH Ngb protein, in which module M1 of human Ngb is replaced by that of zebrafish, is a cell-membrane-penetrating protein that can protect ZF4 cells against hydrogen peroxide exposure. Moreover, we investigated the localization of Ngb mRNA and protein in zebrafish retina and found that Ngb mRNA is expressed in amacrine cells in the inner nuclear layer and is significantly increased in amacrine cells 3days after optic nerve injury. Immunohistochemical studies clarified that Ngb protein levels were increased in both amacrine cells and presynaptic regions in the inner plexiform layer after nerve injury. Taken together, we hypothesize that fish Ngb, whose expression is upregulated in amacrine cells after optic nerve injury, might be released from amacrine cells, translocate into neighboring ganglion cells, and function in the early stage of optic nerve regeneration. This article is part of a Special Issue entitled: Oxygen Binding and Sensing Proteins.
Collapse
Affiliation(s)
- Yuki Kamioka
- Department of Life Sciences, The University of Tokyo, Tokyo, Japan
| | | | | | | | | | | | | |
Collapse
|
15
|
Neuroglobin involvement in respiratory chain function and retinal ganglion cell integrity. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2012; 1823:2261-73. [DOI: 10.1016/j.bbamcr.2012.09.009] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 09/20/2012] [Accepted: 09/24/2012] [Indexed: 01/13/2023]
|
16
|
Brittain T. The anti-apoptotic role of neuroglobin. Cells 2012; 1:1133-55. [PMID: 24710547 PMCID: PMC3901133 DOI: 10.3390/cells1041133] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 11/15/2012] [Accepted: 11/21/2012] [Indexed: 12/21/2022] Open
Abstract
The small heme-protein neuroglobin is expressed at high concentrations in certain brain neurons and in the rod cells of the retina. This paper reviews the many studies which have recently identified a protective role for neuroglobin, in a wide range of situations involving apoptotic cell death. The origins of this protective mechanism are discussed in terms of both experimental results and computational modeling of the intrinsic pathway of apoptosis, which shows that neuroglobin can intervene in this process by a reaction with released mitochondrial cytochrome c. An integrated model, based on the various molecular actions of both neuroglobin and cytochrome c, is developed, which accounts for the cellular distribution of neuroglobin.
Collapse
Affiliation(s)
- Thomas Brittain
- School of Biological Sciences, Centre for Brain Research, University of Auckland, 3a Symonds Street, Auckland,1142, New Zealand.
| |
Collapse
|
17
|
Hundahl CA, Fahrenkrug J, Luuk H, Hay-Schmidt A, Hannibal J. Restricted expression of Neuroglobin in the mouse retina and co-localization with Melanopsin and Tyrosine Hydroxylase. Biochem Biophys Res Commun 2012; 425:100-6. [PMID: 22820193 DOI: 10.1016/j.bbrc.2012.07.061] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 07/13/2012] [Indexed: 10/28/2022]
Abstract
Neuroglobin (Ngb), a neuronal specific oxygen binding heme-globin, reported to be expressed at high levels in most layers of the murine retina. Ngb's function is presently unknown, but based on its high expression level and oxygen binding capabilities Ngb was proposed to function as an oxygen reservoir facilitating oxygen metabolism in highly active neurons or to function as a neuroprotectant. In the present study, we re-examined the expression pattern of Ngb in the retina using a highly validated antibody. Furthermore, intactness of retino-hypothalamic projections and the retinal expression level of Melanopsin and Tyrosine Hydroxylase were investigated in Ngb-null mice. Ngb-immunoreactivity was found in a few neurons of the ganglion cell and inner nuclear layers co-expressing Melanopsin and Tyrosine Hydroxylase, respectively. Ngb deficiency neither affected the level of Melanopsin and Tyrosine Hydroxylase proteins nor the intactness of PACAP-positive retinohypothalamic projections in the suprachiasmatic nucleus. Based on the present results, it seems unlikely that Ngb could have a major role in retinal oxygen homeostasis and neuronal survival under normal conditions. The present study suggests that a number of previously published reports have relied on antibodies with dubious specificity.
Collapse
Affiliation(s)
- C A Hundahl
- Department of Clinical Biochemistry, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.
| | | | | | | | | |
Collapse
|
18
|
Dietz GPH. Protection by neuroglobin and cell-penetrating peptide-mediated delivery in vivo: a decade of research. Comment on Cai et al: TAT-mediated delivery of neuroglobin protects against focal cerebral ischemia in mice. Exp Neurol. 2011; 227(1): 224-31. Exp Neurol 2011; 231:1-10. [PMID: 21620833 DOI: 10.1016/j.expneurol.2011.05.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 05/04/2011] [Accepted: 05/10/2011] [Indexed: 12/09/2022]
Abstract
Over the last decade, numerous studies have suggested that neuroglobin is able to protect against the effects of ischemia. However, such results have mostly been based on models using transgenic overexpression or viral delivery. As a therapy, new technology would need to be applied to enable delivery of high concentrations of neuroglobin shortly after the patient suffers the stroke. An approach to deliver proteins in ischemia in vivo in a timely manner is the use of cell-penetrating peptides (CPP). CPP have been used in animal models for brain diseases for about a decade as well. In a recent issue of Experimental Neurology, Cai and colleagues test the effect of CPP-coupled neuroglobin in an in vivo stroke model. They find that the fusion protein protects the brain against the effect of ischemia when applied before stroke onset. Here, a concise review of neuroglobin research and the application of CPP peptides in hypoxia and ischemia is provided.
Collapse
Affiliation(s)
- Gunnar P H Dietz
- Dep. 851, Neurodegeneration II, H. Lundbeck A/S, Ottiliavej 9, 2500 Valby, Denmark.
| |
Collapse
|
19
|
Palladino P, Scaglione GL, Arcovito A, Maria Vitale R, Amodeo P, Vallone B, Brunori M, Benedetti E, Rossi F. Neuroglobin-prion protein interaction: what's the function? J Pept Sci 2011; 17:387-91. [DOI: 10.1002/psc.1333] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Revised: 10/15/2010] [Accepted: 10/25/2010] [Indexed: 11/09/2022]
|
20
|
Xu J, Yin G, Du W. Distal mutation modulates the heme sliding in mouse neuroglobin investigated by molecular dynamics simulation. Proteins 2010; 79:191-202. [DOI: 10.1002/prot.22872] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
21
|
Nieznanski K. Interactions of prion protein with intracellular proteins: so many partners and no consequences? Cell Mol Neurobiol 2009; 30:653-66. [PMID: 20041289 DOI: 10.1007/s10571-009-9491-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2009] [Accepted: 12/18/2009] [Indexed: 10/20/2022]
Abstract
Prion protein (PrP) plays a key role in the pathogenesis of transmissible spongiform encephalopathies (TSEs)--fatal diseases of the central nervous system. Its physiological function as well as exact role in neurodegeneration remain unclear, hence screens for proteins interacting with PrP seem to be the most promising approach to elucidating these issues. PrP is mostly a plasma membrane-anchored extracellular glycoprotein and only a small fraction resides inside the cell, yet the number of identified intracellular partners of PrP is comparable to that of its membranal or extracellular interactors. Since some TSEs are accompanied by significantly increased levels of cytoplasmic PrP and this fraction of the protein has been found to be neurotoxic, it is of particular interest to characterize the intracellular interactome of PrP. It seems reasonable that at elevated cytoplasmic levels, PrP may exert cytotoxic effect by affecting the physiological functions of its intracellular interactors. This review is focused on the cytoplasmic partners of PrP along with possible consequences of their binding.
Collapse
Affiliation(s)
- Krzysztof Nieznanski
- Department of Biochemistry, Polish Academy of Sciences, Nencki Institute of Experimental Biology, 3 Pasteur St, Warsaw 02093, Poland.
| |
Collapse
|
22
|
Xu J, Li L, Yin G, Li H, Du W. Ligand orientation of human neuroglobin obtained from solution NMR and molecular dynamics simulation as compared with X-ray crystallography. J Inorg Biochem 2009; 103:1693-701. [PMID: 19850349 DOI: 10.1016/j.jinorgbio.2009.09.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2009] [Revised: 09/17/2009] [Accepted: 09/21/2009] [Indexed: 10/20/2022]
Abstract
Neuroglobin, a new member of hemoprotein family, can reversibly bind oxygen and take part in many biological processes such as enzymatic reaction, signal transduction and the mitochondria function. Different from myoglobin and hemoglobin, it has a hexacoordinated heme environment, with histidyl imidazole of proximal His(96)(F8) and distal His(64)(E7) directly bound to the metal ion. In the present work, solution (1)H NMR spectroscopy was employed to investigate the electronic structure of heme center of wild-type met-human neuroglobin. The resonances of heme protons and key residues in the heme pocket were assigned. Two heme orientations resulting from a 180 degrees rotation about the alpha-gamma-meso axis with a population ratio about 2:1 were observed. Then the (1)H NMR chemical shifts of the ferriheme methyl groups were used to predict orientations of the axial ligand. The obtained axial ligand plane angle phi is consistent with that from the molecular dynamics simulation but not with those from the crystal data. Compared with mouse neuroglobin, the obtained average ligand orientation of human neuroglobin reflects the changeability of heme environment for the Ngb family.
Collapse
Affiliation(s)
- Jia Xu
- Department of Chemistry, Renmin University of China, Beijing 100872, China
| | | | | | | | | |
Collapse
|