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Gibbons L, Ozaki E, Greene C, Trappe A, Carty M, Coppinger JA, Bowie AG, Campbell M, Doyle SL. SARM1 Promotes Photoreceptor Degeneration in an Oxidative Stress Model of Retinal Degeneration. Front Neurosci 2022; 16:852114. [PMID: 35431772 PMCID: PMC9012108 DOI: 10.3389/fnins.2022.852114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 03/04/2022] [Indexed: 11/13/2022] Open
Abstract
SARM1 (sterile alpha and armadillo motif-containing protein) is a highly conserved Toll/IL-1 Receptor (TIR) adaptor with important roles in mediating immune responses. Studies in the brain have shown that SARM1 plays a role in induction of neuronal axon degeneration in response to a variety of injuries. We recently demonstrated that SARM1 is pro-degenerative in a genetic model of inherited retinopathy. This current study aimed to characterise the effect of SARM1 deletion in an alternative model of retinal degeneration (RD) in which the retinal pigment epithelium (RPE) fragments following administration of oxidising agent, sodium iodate (NaIO3), leading to subsequent photoreceptor cell death. Following administration of NaIO3, we observed no apparent difference in rate of loss of RPE integrity in SARM1 deficient mice compared to WT counterparts. However, despite no differences in RPE degeneration, photoreceptor cell number and retinal thickness were increased in Sarm1–/– mice compared to WT counterparts. This apparent protection of the photoreceptors in SARM1 deficient mice is supported by an observed decrease in pro-apoptotic caspase-3 in the photoreceptor layer of Sarm1–/– mice compared to WT. Together these data indicate a pro-degenerative role for SARM1 in the photoreceptors, but not in the RPE, in an oxidative stress induced model of retinal degeneration consistent with its known degenerative role in neurons in a range of neurodegenerative settings.
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Affiliation(s)
- Luke Gibbons
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Ema Ozaki
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Chris Greene
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Anne Trappe
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Michael Carty
- School of Biochemistry and Immunology, Trinity College Dublin, Dublin, Ireland
- Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Judith A. Coppinger
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Andrew G. Bowie
- School of Biochemistry and Immunology, Trinity College Dublin, Dublin, Ireland
- Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Matthew Campbell
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Sarah L. Doyle
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland
- *Correspondence: Sarah L. Doyle,
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2
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Ozaki E, Delaney C, Campbell M, Doyle SL. Minocycline suppresses disease-associated microglia (DAM) in a model of photoreceptor cell degeneration. Exp Eye Res 2022; 217:108953. [DOI: 10.1016/j.exer.2022.108953] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/10/2022] [Accepted: 01/14/2022] [Indexed: 11/04/2022]
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3
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Kenna PF, Humphries MM, Kiang AS, Brabet P, Guillou L, Ozaki E, Campbell M, Farrar GJ, Koenekoop R, Humphries P. Advanced late-onset retinitis pigmentosa with dominant-acting D477G RPE65 mutation is responsive to oral synthetic retinoid therapy. BMJ Open Ophthalmol 2020; 5:e000462. [PMID: 32426524 PMCID: PMC7228561 DOI: 10.1136/bmjophth-2020-000462] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 03/30/2020] [Accepted: 04/02/2020] [Indexed: 01/08/2023] Open
Abstract
Objectives No therapeutic interventions are currently available for autosomal dominant retinitis pigmentosa (adRP). An RPE65 Asp477Gly transition associates with late-onset adRP, reduced RPE65 enzymatic activity being one feature associated with this dominant variant. Our objective: to assess whether in a proof-of-concept study, oral synthetic 9 cis-retinyl acetate therapy improves vision in such advanced disease. Methods and analysis A phase 1b proof-of-concept clinical trial was conducted involving five patients with advanced disease, aged 41-68 years. Goldmann visual fields (GVF) and visual acuities (VA) were assessed for 6-12 months after 7-day treatment, patients receiving consecutive oral doses (40 mg/m2) of 9-cis-retinyl acetate, a synthetic retinoid replacement. Results Pathological effects of D477G variant were preliminarily assessed by electroretinography in mice expressing AAV-delivered D477G RPE65, by MTS [3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxyme- thoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium] assays on RPE viability and enzyme activity in cultured cells. In addition to a mild dominant effect reflected in reduced electroretinographics in mice, and reduced cellular function in vitro, D477G exhibited reduced enzymatic RPE65 activity in vitro. In patients, significant improvements were observed in GVF from baseline ranging from 70% to 200% in three of five subjects aged 67-68 years, with largest improvements at 7-10 months. Of two GVF non-responders, one had significant visual acuity improvement (5-15 letters) from baseline after 6 months. Conclusion Families with D477G variant have been identified in Ireland, the UK, France, the USA and Canada. Effects of single 7-day oral retinoid supplementation lasted at least 6 months, possibly giving visual benefit throughout remaining life in patients with advanced disease, where gene therapy is unlikely to prove beneficial.
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Affiliation(s)
- Paul F Kenna
- Institute of Genetics, University of Dublin, Trinity College, Dublin, Ireland.,The Research Foundation, Royal Victoria Eye and Ear Hospital, Dublin, Ireland
| | - Marian M Humphries
- Institute of Genetics, University of Dublin, Trinity College, Dublin, Ireland
| | - Anna-Sophia Kiang
- Institute of Genetics, University of Dublin, Trinity College, Dublin, Ireland
| | - Philippe Brabet
- Neurosciences, Institute for Neurosciences of Montpellier, Montpellier, Languedoc-Roussillon, France
| | - Laurent Guillou
- Neurosciences, Institute for Neurosciences of Montpellier, Montpellier, Languedoc-Roussillon, France
| | - Ema Ozaki
- Institute of Genetics, University of Dublin, Trinity College, Dublin, Ireland
| | - Matthew Campbell
- Institute of Genetics, University of Dublin, Trinity College, Dublin, Ireland
| | - G Jane Farrar
- Institute of Genetics, University of Dublin, Trinity College, Dublin, Ireland
| | - Robert Koenekoop
- Departments of Ophthalmology, Human Genetics, and Paediatric Surgery, Montreal Children's Hospital, McGill University Health Centre, McGill University, Montreal, Quebec, Canada
| | - Pete Humphries
- Institute of Genetics, University of Dublin, Trinity College, Dublin, Ireland
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4
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Ozaki E, Gibbons L, Neto NG, Kenna P, Carty M, Humphries M, Humphries P, Campbell M, Monaghan M, Bowie A, Doyle SL. SARM1 deficiency promotes rod and cone photoreceptor cell survival in a model of retinal degeneration. Life Sci Alliance 2020; 3:3/5/e201900618. [PMID: 32312889 PMCID: PMC7184027 DOI: 10.26508/lsa.201900618] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 12/29/2022] Open
Abstract
This study reports that activation of SARM1 causes destruction of NAD pools in photoreceptor cells of the retina and identifies a role for SARM1-dependent photoreceptor cell death in retinal degeneration. Retinal degeneration is the leading cause of incurable blindness worldwide and is characterised by progressive loss of light-sensing photoreceptors in the neural retina. SARM1 is known for its role in axonal degeneration, but a role for SARM1 in photoreceptor cell degeneration has not been reported. SARM1 is known to mediate neuronal cell degeneration through depletion of essential metabolite NAD and induction of energy crisis. Here, we demonstrate that SARM1 is expressed in photoreceptors, and using retinal tissue explant, we confirm that activation of SARM1 causes destruction of NAD pools in the photoreceptor layer. Through generation of rho−/−sarm1−/− double knockout mice, we demonstrate that genetic deletion of SARM1 promotes both rod and cone photoreceptor cell survival in the rhodopsin knockout (rho−/−) mouse model of photoreceptor degeneration. Finally, we demonstrate that SARM1 deficiency preserves cone visual function in the surviving photoreceptors when assayed by electroretinography. Overall, our data indicate that endogenous SARM1 has the capacity to consume NAD in photoreceptor cells and identifies a previously unappreciated role for SARM1-dependent cell death in photoreceptor cell degeneration.
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Affiliation(s)
- Ema Ozaki
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland.,Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Luke Gibbons
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland.,Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland
| | - Nuno Gb Neto
- Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, Dublin, Ireland.,Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland
| | - Paul Kenna
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland.,Research Foundation, Royal Victoria Eye and Ear Hospital Dublin, Dublin, Ireland
| | - Michael Carty
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Marian Humphries
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Pete Humphries
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Matthew Campbell
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Michael Monaghan
- Department of Mechanical and Manufacturing Engineering, Trinity College Dublin, Dublin, Ireland.,Trinity Centre for Biomedical Engineering, Trinity College Dublin, Dublin, Ireland.,Advance Materials and BioEngineering Research Centre at Trinity College Dublin and Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Andrew Bowie
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Sarah L Doyle
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland .,Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin, Ireland.,National Children's Research Centre, Our Lady's Children's Hospital Crumlin, Dublin, Ireland
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Augustine J, Pavlou S, Ali I, Harkin K, Ozaki E, Campbell M, Stitt AW, Xu H, Chen M. IL-33 deficiency causes persistent inflammation and severe neurodegeneration in retinal detachment. J Neuroinflammation 2019; 16:251. [PMID: 31796062 PMCID: PMC6889479 DOI: 10.1186/s12974-019-1625-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 10/28/2019] [Indexed: 02/08/2023] Open
Abstract
Background Interleukin-33 (IL-33) belongs to the IL-1 cytokine family and resides in the nuclei of various cell types. In the neural retina, IL-33 is predominately expressed in Müller cells although its role in health and disease is ill-defined. Müller cell gliosis is a critical response during the acute phase of retinal detachment (RD), and in this study, we investigated if IL-33 was modulatory in the inflammatory and neurodegenerative pathology which is characteristic of this important clinical condition. Methods RD was induced by subretinal injection of sodium hyaluronate into C57BL/6 J (WT) and IL-33−/− mice and confirmed by fundus imaging and optical coherence tomography (OCT). The expression of inflammatory cytokines, complement components and growth factors was examined by RT-PCR. Retinal neurodegeneration, Müller cell activation and immune cell infiltration were assessed using immunohistochemistry. The expression of inflammatory cytokines in primary Müller cells and bone marrow-derived macrophages (BM-DMs) was assessed by RT-PCR and Cytometric Bead Array. Results RD persisted for at least 28 days after the injection of sodium hyaluronate, accompanied by significant cone photoreceptor degeneration. The mRNA levels of CCL2, C1ra, C1s, IL-18, IL-1β, TNFα, IL-33 and glial fibrillary acidic protein (GFAP) were significantly increased at day 1 post-RD, reduced gradually and, with the exception of GFAP and C1ra, returned to the basal levels by day 28 in WT mice. In IL-33−/− mice, RD induced an exacerbated inflammatory response with significantly higher levels of CCL2, IL-1β and GFAP when compared to WT. Sustained GFAP activation and immune cell infiltration was detected at day 28 post-RD in IL-33−/− mice. Electroretinography revealed a lower A-wave amplitude at day 28 post-RD in IL-33−/− mice compared to that in WT RD mice. IL-33−/− mice subjected to RD also had significantly more severe cone photoreceptor degeneration compared to WT counterparts. Surprisingly, Müller cells from IL-33−/− mice expressed significantly lower levels of CCL2 and IL-6 compared with those from WT mice, particularly under hypoxic conditions, whereas IL-33−/− bone marrow-derived macrophages expressed higher levels of inducible nitric oxide synthase, TNFα, IL-1β and CCL2 after LPS + IFNγ stimulation compared to WT macrophages. Conclusion IL-33 deficiency enhanced retinal degeneration and gliosis following RD which was related to sustained subretinal inflammation from infiltrating macrophages. IL-33 may provide a previously unrecognised protective response by negatively regulating macrophage activation following retinal detachment.
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Affiliation(s)
- Josy Augustine
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Science, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Sofia Pavlou
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Science, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Imran Ali
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Science, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Kevin Harkin
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Science, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Ema Ozaki
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Matthew Campbell
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Alan W Stitt
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Science, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Heping Xu
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Science, Queen's University Belfast, Belfast, Northern Ireland, UK
| | - Mei Chen
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Science, Queen's University Belfast, Belfast, Northern Ireland, UK.
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6
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Nozaka H, Sazawa H, Ozaki E, Nakano M, Takami H. Detection Algorithm for Inadequate Blood Specimens Due to Contamination with an Infusion Solution in the Clinical Chemistry Tests: Prevention of Incidents by Blood Draw Error. Stud Health Technol Inform 2019; 264:1867-1869. [PMID: 31438383 DOI: 10.3233/shti190688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The aim of this work is to study the influence of contamination with infusion in clinical chemistry tests and to design an algorithm for detection of inadequate blood specimen. We show that panic value of postassium (K+)/ glucose (GLU) or decrease of total protein (TP), albumin (ALB), urea nitrogen (BUN), uric acid (UA), high-density lipoprotein cholesterol (HDL-C), total cholesterol (T-CHO), and calcium (Ca) is an index of contamination of drip infusion solution. Through a clinical study, we show that our algorithm is useful for preventing adverse medical errors.
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Affiliation(s)
- H Nozaka
- Hirosaki University Graduate School of Health Sciences, Hirosaki City, Aomori, Japan
| | - H Sazawa
- Department of Clinical Labolatory, Hokkaido Cancer Center, Sapporo City, Hokkaido, Japan
| | - E Ozaki
- Hirosaki University Graduate School of Health Sciences, Hirosaki City, Aomori, Japan
| | - M Nakano
- Hirosaki University Graduate School of Health Sciences, Hirosaki City, Aomori, Japan
| | - H Takami
- Hirosaki University Graduate School of Health Sciences, Hirosaki City, Aomori, Japan
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7
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Hudson N, Celkova L, Hopkins A, Greene C, Storti F, Ozaki E, Fahey E, Theodoropoulou S, Kenna PF, Humphries MM, Curtis AM, Demmons E, Browne A, Liddie S, Lawrence MS, Grimm C, Cahill MT, Humphries P, Doyle SL, Campbell M. Dysregulated claudin-5 cycling in the inner retina causes retinal pigment epithelial cell atrophy. JCI Insight 2019; 4:130273. [PMID: 31391341 PMCID: PMC6693834 DOI: 10.1172/jci.insight.130273] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 06/27/2019] [Indexed: 11/17/2022] Open
Abstract
Age-related macular degeneration (AMD) is the leading cause of central retinal vision loss worldwide, with an estimated 1 in 10 people over the age of 55 showing early signs of the condition. There are currently no forms of therapy available for the end stage of dry AMD, geographic atrophy (GA). Here, we show that the inner blood-retina barrier (iBRB) is highly dynamic and may play a contributory role in GA development. We have discovered that the gene CLDN5, which encodes claudin-5, a tight junction protein abundantly expressed at the iBRB, is regulated by BMAL1 and the circadian clock. Persistent suppression of claudin-5 expression in mice exposed to a cholesterol-enriched diet induced striking retinal pigment epithelium (RPE) cell atrophy, and persistent targeted suppression of claudin-5 in the macular region of nonhuman primates induced RPE cell atrophy. Moreover, fundus fluorescein angiography in human and nonhuman primate subjects showed increased retinal vascular permeability in the evening compared with the morning. These findings implicate an inner retina-derived component in the early pathophysiological changes observed in AMD, and we suggest that restoring the integrity of the iBRB may represent a novel therapeutic target for the prevention and treatment of GA secondary to dry AMD.
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Affiliation(s)
- Natalie Hudson
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Lucia Celkova
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Alan Hopkins
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
- The Research Foundation, Royal Victoria Eye and Ear Hospital, Dublin, Ireland
| | - Chris Greene
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Federica Storti
- Lab for Retinal Cell Biology, Department of Ophthalmology, University of Zürich, Zürich, Switzerland
| | - Ema Ozaki
- School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Erin Fahey
- School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Sofia Theodoropoulou
- Academic Unit of Ophthalmology, School of Clinical Sciences, University of Bristol, Bristol, United Kingdom
| | - Paul F. Kenna
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
- The Research Foundation, Royal Victoria Eye and Ear Hospital, Dublin, Ireland
| | | | - Annie M. Curtis
- Department of Molecular and Cellular Therapeutics, Royal College of Surgeons in Ireland, Dublin, Ireland
| | | | | | | | | | - Christian Grimm
- Lab for Retinal Cell Biology, Department of Ophthalmology, University of Zürich, Zürich, Switzerland
| | - Mark T. Cahill
- The Research Foundation, Royal Victoria Eye and Ear Hospital, Dublin, Ireland
| | - Pete Humphries
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Sarah L. Doyle
- School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Matthew Campbell
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
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8
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Brennan K, O'Leary BD, Mc Laughlin D, Breen EP, Connolly E, Ali N, O'Driscoll DN, Ozaki E, Mahony R, Mulfaul K, Ryan AM, Ni Chianain A, McHugh A, Molloy EJ, Hogan AE, Paran S, McAuliffe FM, Doyle SL. Type 1 IFN Induction by Cytosolic Nucleic Acid Is Intact in Neonatal Mononuclear Cells, Contrasting Starkly with Neonatal Hyporesponsiveness to TLR Ligation Due to Independence from Endosome-Mediated IRF3 Activation. J Immunol 2018; 201:1131-1143. [PMID: 29980613 DOI: 10.4049/jimmunol.1700956] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 06/10/2018] [Indexed: 12/25/2022]
Abstract
Two million infants die each year from infectious diseases before they reach 12 mo; many of these diseases are vaccine preventable in older populations. Pattern recognition receptors represent the critical front-line defense against pathogens. Evidence suggests that the innate immune system does not fully develop until puberty, contributing to impaired response to infection and impaired vaccine responses in neonates, infants, and children. The activity of the pattern recognition receptor family of cytosolic nucleic acid (CNA) sensors in this pediatric population has not been reported. We show that in direct contrast to weak TLR-induced type I IFN in human cord blood mononuclear cells, cord blood mononuclear cells are capable of initiating a potent response to CNA, inducing both antiviral type I IFN and, unexpectedly, proinflammatory TNF-α. A deficiency in Rab11-GTPase endosome formation and consequent lack of IRF3 activation in neonatal monocytes is at least in part responsible for the marked disparity in TLR-induced IFN production between neonatal and adult monocytes. CNA receptors do not rely on endosome formation, and therefore, these responses remain intact in neonates. Heightened neonatal responses to CNA challenge are maintained in children up to 2 y of age and, in marked contrast to TLR4/9 agonists, result in IL-12p70 and IFN-γ generation. CNA sensors induce robust antiviral and proinflammatory pathways in neonates and children and possess great potential for use as immunostimulants or vaccine adjuvants for targeted neonatal and pediatric populations to promote cell-mediated immunity against invasive infectious disease.
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Affiliation(s)
- Kiva Brennan
- National Children's Research Centre, Crumlin, Dublin 12, Ireland.,School of Medicine, Trinity College Dublin, Dublin 2, Ireland
| | | | - Danielle Mc Laughlin
- Department of Paediatric Surgery, Our Lady's Children's Hospital, Crumlin, Dublin 12, Ireland
| | - Eamon P Breen
- School of Medicine, Trinity College Dublin, Dublin 2, Ireland
| | - Emma Connolly
- National Children's Research Centre, Crumlin, Dublin 12, Ireland.,School of Medicine, Trinity College Dublin, Dublin 2, Ireland
| | - Nusrat Ali
- National Maternity Hospital, Dublin 2, Ireland
| | | | - Ema Ozaki
- National Children's Research Centre, Crumlin, Dublin 12, Ireland.,School of Medicine, Trinity College Dublin, Dublin 2, Ireland
| | - Rebecca Mahony
- National Children's Research Centre, Crumlin, Dublin 12, Ireland.,School of Medicine, Trinity College Dublin, Dublin 2, Ireland
| | - Kelly Mulfaul
- National Children's Research Centre, Crumlin, Dublin 12, Ireland.,School of Medicine, Trinity College Dublin, Dublin 2, Ireland
| | - Aoife M Ryan
- National Children's Research Centre, Crumlin, Dublin 12, Ireland
| | | | | | - Eleanor J Molloy
- National Children's Research Centre, Crumlin, Dublin 12, Ireland.,School of Medicine, Trinity College Dublin, Dublin 2, Ireland.,Women and Infants University Hospital, Dublin 8, Ireland
| | - Andrew E Hogan
- National Children's Research Centre, Crumlin, Dublin 12, Ireland.,Education and Research Centre and Conway Institute, St. Vincent's University Hospital, University College Dublin, Dublin 4, Ireland; and
| | - Sri Paran
- Department of Paediatric Surgery, Our Lady's Children's Hospital, Crumlin, Dublin 12, Ireland
| | - Fionnuala M McAuliffe
- National Maternity Hospital, Dublin 2, Ireland.,Obstetrics and Gynaecology, School of Medicine, University College Dublin, National Maternity Hospital, Dublin 2, Ireland
| | - Sarah L Doyle
- National Children's Research Centre, Crumlin, Dublin 12, Ireland; .,School of Medicine, Trinity College Dublin, Dublin 2, Ireland
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9
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Shimanoe C, Hachiya T, Hara M, Nishida Y, Tanaka K, Sutoh Y, Shimizu A, Hishida A, Kawai S, Okada R, Tamura T, Matsuo K, Ito H, Ozaki E, Matsui D, Ibusuki R, Shimoshikiryo I, Takashima N, Kadota A, Arisawa K, Uemura H, Suzuki S, Watanabe M, Kuriki K, Endoh K, Mikami H, Nakamura Y, Momozawa Y, Kubo M, Nakatochi M, Naito M, Wakai K. A genome-wide association study of coping behaviors suggests FBXO45
is associated with emotional expression. Genes, Brain and Behavior 2018; 18:e12481. [DOI: 10.1111/gbb.12481] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 03/15/2018] [Accepted: 04/11/2018] [Indexed: 12/20/2022]
Affiliation(s)
- C. Shimanoe
- Department of Preventive Medicine, Faculty of Medicine; Saga University; Saga Japan
| | - T. Hachiya
- Division of Biomedical Information Analysis, Iwate Tohoku Medical Megabank Organization; Disaster Reconstruction Center, Iwate Medical University; Iwate Japan
| | - M. Hara
- Department of Preventive Medicine, Faculty of Medicine; Saga University; Saga Japan
| | - Y. Nishida
- Department of Preventive Medicine, Faculty of Medicine; Saga University; Saga Japan
| | - K. Tanaka
- Department of Preventive Medicine, Faculty of Medicine; Saga University; Saga Japan
| | - Y. Sutoh
- Division of Biomedical Information Analysis, Iwate Tohoku Medical Megabank Organization; Disaster Reconstruction Center, Iwate Medical University; Iwate Japan
| | - A. Shimizu
- Division of Biomedical Information Analysis, Iwate Tohoku Medical Megabank Organization; Disaster Reconstruction Center, Iwate Medical University; Iwate Japan
| | - A. Hishida
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - S. Kawai
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - R. Okada
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - T. Tamura
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
| | - K. Matsuo
- Division of Molecular and Clinical Epidemiology; Aichi Cancer Center Research Institute; Nagoya Japan
| | - H. Ito
- Division of Molecular and Clinical Epidemiology; Aichi Cancer Center Research Institute; Nagoya Japan
| | - E. Ozaki
- Department of Epidemiology for Community Health and Medicine; Kyoto Prefectural University of Medicine; Kyoto Japan
| | - D. Matsui
- Department of Epidemiology for Community Health and Medicine; Kyoto Prefectural University of Medicine; Kyoto Japan
| | - R. Ibusuki
- Department of International Island and Community Medicine; Kagoshima University Graduate School of Medical and Dental Sciences; Kagoshima Japan
| | - I. Shimoshikiryo
- Department of International Island and Community Medicine; Kagoshima University Graduate School of Medical and Dental Sciences; Kagoshima Japan
| | - N. Takashima
- Department of Public Health; Shiga University of Medical Science; Otsu Japan
| | - A. Kadota
- Department of Public Health; Shiga University of Medical Science; Otsu Japan
- Center for Epidemiologic Research in Asia; Shiga University of Medical Science; Otsu Japan
| | - K. Arisawa
- Department of Preventive Medicine; Institute of Biomedical Sciences, Tokushima University Graduate School; Tokushima Japan
| | - H. Uemura
- Department of Preventive Medicine; Institute of Biomedical Sciences, Tokushima University Graduate School; Tokushima Japan
| | - S. Suzuki
- Department of Public Health; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - M. Watanabe
- Department of Public Health; Nagoya City University Graduate School of Medical Sciences; Nagoya Japan
| | - K. Kuriki
- Laboratory of Public Health, Division of Nutritional Sciences, School of Food and Nutritional Sciences; University of Shizuoka; Shizuoka Japan
| | - K. Endoh
- Laboratory of Public Health, Division of Nutritional Sciences, School of Food and Nutritional Sciences; University of Shizuoka; Shizuoka Japan
| | - H. Mikami
- Division of Cancer Prevention and Epidemiology; Chiba Cancer Center; Chiba Japan
| | - Y. Nakamura
- Division of Cancer Prevention and Epidemiology; Chiba Cancer Center; Chiba Japan
| | - Y. Momozawa
- Laboratory for Genotyping Development; RIKEN Center for Integrative Medical Sciences; Yokohama Japan
| | - M. Kubo
- RIKEN Center for Integrative Medical Sciences; Yokohama Japan
| | - M. Nakatochi
- Statistical Analysis Section; Center for Advanced Medicine and Clinical Research, Nagoya University Hospital; Nagoya Japan
| | - M. Naito
- Department of Maxillofacial Functional Development; Graduate School of Biomedical and Health Sciences, Hiroshima University; Hiroshima Japan
| | - K. Wakai
- Department of Preventive Medicine; Nagoya University Graduate School of Medicine; Nagoya Japan
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10
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Kuriyama N, Ihara M, Koyama T, Mizuno T, Ozaki E, Kondo M, Tokuda T, Tamura A, Kazuo T, Nakagawa M, Watanabe Y. Vasoactive mid-regional pro-adrenomedullin is associated with cognitive decline accompa-nying deep white matter lesions in the brain: A longitudinal brain MRI study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Theodoropoulou S, Copland DA, Liu J, Wu J, Gardner PJ, Ozaki E, Doyle SL, Campbell M, Dick AD. Interleukin-33 regulates tissue remodelling and inhibits angiogenesis in the eye. J Pathol 2016; 241:45-56. [PMID: 27701734 PMCID: PMC5683707 DOI: 10.1002/path.4816] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 09/04/2016] [Accepted: 09/21/2016] [Indexed: 01/20/2023]
Abstract
Age‐related macular degeneration (AMD) is the leading cause of central vision loss worldwide. Loss of retinal pigment epithelium (RPE) is a major pathological hallmark in AMD with or without pathological neovascularization. Although activation of the immune system is implicated in disease progression, pathological pathways remain diverse and unclear. Here, we report an unexpected protective role of a pro‐inflammatory cytokine, interleukin‐33 (IL‐33), in ocular angiogenesis. IL‐33 and its receptor (ST2) are expressed constitutively in human and murine retina and choroid. When RPE was activated, IL‐33 expression was markedly elevated in vitro. We found that IL‐33 regulated tissue remodelling by attenuating wound‐healing responses, including reduction in the migration of choroidal fibroblasts and retinal microvascular endothelial cells, and inhibition of collagen gel contraction. In vivo, local administration of recombinant IL‐33 inhibited murine choroidal neovascularization (CNV) formation, a surrogate of human neovascular AMD, and this effect was ST2‐dependent. Collectively, these data demonstrate IL‐33 as a potential immunotherapy and distinguishes pathways for subverting AMD pathology. © 2016 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Sofia Theodoropoulou
- Academic Unit of Ophthalmology, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - David A Copland
- Academic Unit of Ophthalmology, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Jian Liu
- Academic Unit of Ophthalmology, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Jiahui Wu
- Academic Unit of Ophthalmology, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Peter J Gardner
- University College London-Institute of Ophthalmology, London, UK
| | - Ema Ozaki
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Sarah L Doyle
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Matthew Campbell
- Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Andrew D Dick
- Academic Unit of Ophthalmology, School of Clinical Sciences, University of Bristol, Bristol, UK.,University College London-Institute of Ophthalmology, London, UK.,National Institute for Health Research (NIHR) Biomedical Research Centre at Moorfields Eye Hospital and University College London Institute of Ophthalmology, London, UK
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12
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Doyle SL, López FJ, Celkova L, Brennan K, Mulfaul K, Ozaki E, Kenna PF, Kurali E, Hudson N, Doggett T, Ferguson TA, Humphries P, Adamson P, Campbell M. IL-18 Immunotherapy for Neovascular AMD: Tolerability and Efficacy in Nonhuman Primates. Invest Ophthalmol Vis Sci 2015; 56:5424-30. [PMID: 26284546 DOI: 10.1167/iovs.15-17264] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE Age-related macular degeneration is the most common form of central retinal blindness in the elderly. Of the two end stages of disease, neovascular AMD-although the minority form-is the most severe. Current therapies are highly successful at controlling progression of neovascular lesions; however, a significant number of patients remain refractory to treatment and the development of alternative and additive therapies to anti-VEGFs is essential. METHODS In order to address the translational potential of interleukin (IL)-18 for use in neovascular AMD, we initiated a nonhuman primate tolerability and efficacy study for the use of intravitreally (IVT) administered clinical grade human IL-18 (SB-485232). Cynomolgus monkeys were injected IVT with increasing doses of human IL-18 (two each at 1000, 3000, and 10,000 ng per eye). In tandem, 21 monkeys were administered nine laser burns in each eye prior to receiving IL-18 as an IVT injection at a range of doses. Fundus fluorescein angiography (FFA) was performed on days 8, 15, and 22 post injection and the development of neovascular lesions was assessed. RESULTS We show intravitreal, mature, recombinant human IL-18 is safe and can reduce choroidal neovascular lesion development in cynomolgus monkeys. CONCLUSIONS Based on our data comparing human IL-18 to current anti-VEGF-based therapy, clinical deployment of IL-18 for neovascular AMD has the potential to lead to a new adjuvant immunotherapy-based treatment for this severe form of central blindness.
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Affiliation(s)
- Sarah L Doyle
- Department of Clinical Medicine School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Francisco J López
- Ophthalmology Discovery Performance Unit, GlaxoSmithKline, King of Prussia, Pennsylvania, United States
| | - Lucia Celkova
- Ocular Genetics Unit, Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Kiva Brennan
- Department of Clinical Medicine School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Kelly Mulfaul
- Department of Clinical Medicine School of Medicine, Trinity College Dublin, Dublin, Ireland
| | - Ema Ozaki
- Ocular Genetics Unit, Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Paul F Kenna
- Ocular Genetics Unit, Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland 4The Research Foundation, Royal Victoria Eye and Ear Hospital, Adelaide Road, Dublin, Ireland
| | - Edit Kurali
- Statistics Consulting Group, Quantitative Science, PTS, GlaxoSmithKline, King of Prussia, Pennsylvania, United States
| | - Natalie Hudson
- Ocular Genetics Unit, Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Teresa Doggett
- Department of Ophthalmology and Visual Science, Washington University School of Medicine, St. Louis, Missouri, United States
| | - Thomas A Ferguson
- Department of Ophthalmology and Visual Science, Washington University School of Medicine, St. Louis, Missouri, United States
| | - Peter Humphries
- Ocular Genetics Unit, Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
| | - Peter Adamson
- Ophthalmology Discovery Performance Unit, GlaxoSmithKline, Stevenage, United Kingdom 8Ocular Biology and Therapeutics, Institute of Ophthalmology, University College London, London, United Kingdom
| | - Matthew Campbell
- Ocular Genetics Unit, Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland
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13
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Kuriyama N, Watanabe I, Miyatani F, Matsui D, Ozaki E, Nomura R, Nakano K, Watanabe Y. The Correlation between Microbleeds and Cnm-positive Streptococcus Mutans: A Pilot Survey Study Based on Magnetic Resonance Imaging. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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14
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Miyatani F, Kuriyama N, Watanabe I, Nomura R, Nakano K, Matsui D, Ozaki E, Koyama T, Nishigaki M, Yamamoto T, Mizuno T, Tamura A, Akazawa K, Takada A, Takeda K, Yamada K, Nakagawa M, Ihara M, Kanamura N, Friedland RP, Watanabe Y. Relationship between Cnm-positive Streptococcus mutans and cerebral microbleeds in humans. Oral Dis 2015. [PMID: 26205098 DOI: 10.1111/odi.12360] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Cerebral hemorrhage has been shown to occur in animals experimentally infected with Streptococcus mutans carrying the collagen-binding Cnm gene. However, the relationship between cerebral microbleeds and oral hygiene, with a focus on Cnm gene-positive S. mutans infection, remains unclear. MATERIAL AND METHODS One hundred and thirty-nine subjects participated. The presence or absence of Cnm-positive S. mutans and its collagen-binding activity were investigated using saliva samples, and relationship with cerebral microbleeds detected on MRI investigated, including clinical information and oral parameters. RESULTS Fifty-one subjects were identified as Cnm-positive S. mutans carriers (36.7%), with cerebral microbleeds being detected in 43 (30.9%). A significantly larger number of subjects carried Cnm-positive S. mutans in the cerebral microbleeds (+) group. S. mutans with Cnm collagen-binding ability was detected in 39 (28.1%) of all subjects, and the adjusted odds ratio for cerebral microbleeds in the Cnm-positive group was 14.4. Regarding the presence of cerebral microbleeds, no significant differences were noted in the number of remaining teeth, dental caries, or in classic arteriosclerosis risk factors. CONCLUSIONS The occurrence of cerebral microbleeds was higher in subjects carrying Cnm-positive S. mutans, indicating that the presence of Cnm-positive S. mutans increases cerebral microbleeds, and is an independent risk for the development of cerebrovascular disorders.
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Affiliation(s)
- F Miyatani
- Departments of Dental Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.,Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - N Kuriyama
- Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.,Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - I Watanabe
- Departments of Dental Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.,Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - R Nomura
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - K Nakano
- Department of Pediatric Dentistry, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - D Matsui
- Departments of Dental Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.,Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - E Ozaki
- Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T Koyama
- Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - M Nishigaki
- Departments of Dental Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T Yamamoto
- Departments of Dental Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - T Mizuno
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - A Tamura
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - K Akazawa
- Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - A Takada
- Kyoto Industrial Health Association, Kyoto, Japan
| | - K Takeda
- Kyoto Industrial Health Association, Kyoto, Japan
| | - K Yamada
- Department of Radiology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - M Nakagawa
- Department of Neurology, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - M Ihara
- Department of Stroke and Cerebrovascular Diseases, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - N Kanamura
- Departments of Dental Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - R P Friedland
- Department of Neurology, University of Louisville, KY, USA
| | - Y Watanabe
- Department of Epidemiology for Community health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
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15
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Abstract
The inflammasome is a molecular platform formed by activation of an innate immune pattern recognition receptor seed, such as NLRP3. Once activated, NLRP3 recruits the adapter ASC (apoptosis-related speck-like protein containing a caspase recruitment domain), which in turn recruits procaspase-1. Procaspase-1 autocatalyzes its cleavage and activation, resulting in maturation of the precursor forms of interleukin (IL)-1β and IL-18 into active proinflammatory cytokines and initiation of pyroptotic cell death. The NLRP3 inflammasome has been implicated in the pathogenesis of a wide variety of diseases, including genetically inherited autoinflammatory conditions as well as chronic diseases in which NLRP3 is abnormally activated. The NLRP3 inflammasome has been linked to diseases such as Alzheimer’s disease, atherosclerosis, metabolic syndrome, and age-related macular degeneration. In this review, we describe the NLRP3 inflammasome complex and its activation in disease, and detail the current therapies that modulate either the NLRP3 inflammasome complex itself or the two cytokines it is responsible for activating, ie, IL-1β and IL-18.
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Affiliation(s)
- Ema Ozaki
- Department of Genetics, Trinity College Dublin, Dublin, Ireland
| | | | - Sarah L Doyle
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin, Ireland ; National Children's Research Centre, Our Lady's Children's Hospital Crumlin, Dublin, Ireland
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16
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Doyle SL, Ozaki E, Brennan K, Humphries MM, Mulfaul K, Keaney J, Kenna PF, Maminishkis A, Kiang AS, Saunders SP, Hams E, Lavelle EC, Gardiner C, Fallon PG, Adamson P, Humphries P, Campbell M. IL-18 attenuates experimental choroidal neovascularization as a potential therapy for wet age-related macular degeneration. Sci Transl Med 2014; 6:230ra44. [PMID: 24695684 DOI: 10.1126/scitranslmed.3007616] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Age-related macular degeneration (AMD) is the most common form of central retinal blindness globally. Distinct processes of the innate immune system, specifically activation of the NLRP3 inflammasome, have been shown to play a central role in the development of both "dry" and neovascular ("wet") forms of the disease. We show that the inflammatory cytokine interleukin-18 (IL-18) can regulate choroidal neovascularization formation in mice. We observed that exogenous administration of mature recombinant IL-18 has no effect on retinal pigment epithelial (RPE) cell viability, but that overexpression of pro-IL-18 or pro-IL-1β alone can cause RPE cell swelling and subsequent atrophy, a process that can be inhibited by the promotion of autophagy. A direct comparison of local and systemic administration of mature recombinant IL-18 with current anti-VEGF (vascular endothelial growth factor)-based therapeutic strategies shows that IL-18 treatment works effectively alone and more effectively in combination with anti-VEGF therapy and represents a novel therapeutic strategy for the treatment of wet AMD.
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Affiliation(s)
- Sarah L Doyle
- Department of Clinical Medicine, School of Medicine, Trinity College Dublin, Dublin 2, Ireland
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17
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Yuan H, Wilson CM, Xia J, Doyle SL, Li S, Fales AM, Liu Y, Ozaki E, Mulfaul K, Hanna G, Palmer GM, Wang LV, Grant GA, Vo-Dinh T. Plasmonics-enhanced and optically modulated delivery of gold nanostars into brain tumor. Nanoscale 2014; 6:4078-82. [PMID: 24619405 PMCID: PMC4343032 DOI: 10.1039/c3nr06770j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Plasmonics-active gold nanostars exhibiting strong imaging contrast and efficient photothermal transduction were synthesized for a novel pulsed laser-modulated plasmonics-enhanced brain tumor microvascular permeabilization. We demonstrate a selective, optically modulated delivery of nanoprobes into the tumor parenchyma with minimal off-target distribution.
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Affiliation(s)
- Hsiangkuo Yuan
- Department of Biomedical Engineering, Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708, USA.
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18
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Campbell M, Doyle SL, Ozaki E, Kenna PF, Kiang AS, Humphries MM, Humphries P. An overview of the involvement of interleukin-18 in degenerative retinopathies. Adv Exp Med Biol 2014; 801:409-15. [PMID: 24664725 DOI: 10.1007/978-1-4614-3209-8_52] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Age-related macular degeneration (AMD) is the leading cause of central vision loss worldwide and while polymorphisms in genes associated with the immune system have been identified as risk factors for disease development, the underlying pathways and mechanisms involved in disease progression have remained unclear. In AMD, localised inflammatory responses related to particulate matter accumulation and subsequent "sterile" inflammation has recently gained considerable interest amongst basic researchers and clinicians alike. Typically, inflammatory responses in the human body are caused as a result of bacterial or viral infection, however in chronic conditions such as AMD, extracellular particulate matter such as drusen can be "sensed" by the NACHT, LRR and PYD domains-containing protein 3 (NLRP3) inflammasome, culminating in the release of the two pro-inflammatory cytokines IL-1β and IL-18 in the delicate local tissue of the retina. Identification at the molecular level of mediators of the inflammatory response in AMD may yield novel therapeutic approaches to this common and often severe form of blindness. Here, we will describe the role of IL-18 in AMD and other forms of retinal disorders. We will outline some of the key functions of IL-18 as it pertains to maintaining tissue homeostasis in a healthy and degenerating/diseased retina.
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Affiliation(s)
- Matthew Campbell
- Ocular Genetics Unit, Smurfit Institute of Genetics, Lincoln Place Gate, Dublin 2, Ireland,
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19
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Campbell M, Hanrahan F, Gobbo OL, Kelly ME, Kiang AS, Humphries MM, Nguyen AT, Ozaki E, Keaney J, Blau CW, Kerskens CM, Cahalan SD, Callanan JJ, Wallace E, Grant GA, Doherty CP, Humphries P. Targeted suppression of claudin-5 decreases cerebral oedema and improves cognitive outcome following traumatic brain injury. Nat Commun 2012; 3:849. [DOI: 10.1038/ncomms1852] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Accepted: 04/18/2012] [Indexed: 02/04/2023] Open
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20
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Kuriyama N, Mizuno T, Ohshima Y, Yamada K, Ozaki E, Shigeta M, Mitani S, Kondo M, Matsumoto S, Takeda K, Nakagawa M, Watanabe Y. Intracranial deep white matter lesions (DWLs) are associated with chronic kidney disease (CKD) and cognitive impairment: a 5-year follow-up magnetic resonance imaging (MRI) study. Arch Gerontol Geriatr 2011; 56:55-60. [PMID: 22177547 DOI: 10.1016/j.archger.2011.11.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Revised: 11/16/2011] [Accepted: 11/20/2011] [Indexed: 10/14/2022]
Abstract
Stroke incidence and cognitive decline are related to progression of arteriosclerosis in intracranial DWLs. However, the relationships between DWLs and factors associated with their progression, including CKD, have not been fully elucidated using longitudinal MRI. Of 291 individuals (184 males, 107 females; age 66.9 ± 6.1 years) who had voluntarily participated in a hospital-based health check-up and underwent repeated brain MRI scans in 2003 and 2008, 273 were evaluated in this study. The DWL group included those having DWL without progression, and the DWL progression (DWLP) group included those having an increase in grade number according to the Fazekas classification. Unimpaired age-matched subjects with no brain MRI abnormalities constituted Group C. The Mini-Mental State Examination (MMSE) and verbal fluency tasks were used for objective cognitive evaluations according to the MR evaluation schedule in 2008. Associations between DWLs and vascular risk factors were examined. DWLP occurred in 9.2% of subjects. Compared to Group C subjects, DWL and DWLP group subjects had high odds ratios (ORs) for hypertension (HT) (2.23 and 2.92, respectively) and CKD (1.40 and 2.41, respectively). After adjustment for potential confounders, the ORs of CKD for DWLs remained significant (1.13 and 1.43, p<0.05). DWLs and DWLP were associated with low cognitive scale scores and increased CKD. In conclusion, CKD was associated with DWLs and DWLP as an independent risk factor and a lower level of cognitive function 5 years after CKD was identified. Successful CKD therapy may be expected to prevent DWLP.
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Affiliation(s)
- N Kuriyama
- Department of Epidemiology for Community Health and Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan.
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21
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Kuriyama N, Ozaki E, Yoshikawa A, Shigeta M, Matsui D, Watanabe I, Inoue K, Watanabe Y. SP1-21 Correlation of mild bone fragility and related indicators of biological markers or ultrasonic bone densitometry in a normal Japanese population. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976m.98] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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22
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Shigeta M, Ozaki E, Kuriyama N, Matsui D, Watanabe I, Inoue K, Nakazawa A, Ozasa K, Watanabe Y. P2-276 Influence of smoking and smoking cessation on pulmonary function in Japanese healthy people. Br J Soc Med 2011. [DOI: 10.1136/jech.2011.142976k.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Campbell M, Humphries MM, Kiang AS, Nguyen ATH, Gobbo OL, Tam LCS, Suzuki M, Hanrahan F, Ozaki E, Farrar GJ, Kenna PF, Humphries P. Systemic low-molecular weight drug delivery to pre-selected neuronal regions. EMBO Mol Med 2011; 3:235-45. [PMID: 21374818 PMCID: PMC3377070 DOI: 10.1002/emmm.201100126] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Revised: 02/04/2011] [Accepted: 02/07/2011] [Indexed: 01/23/2023] Open
Abstract
We describe a procedure for controlled, periodic, reversible modulation of selected regions of the blood–brain barrier (BBB) or the inner-blood–retina barrier (iBRB) based on incorporation into an AAV-2/9 vector of a doxycycline-inducible gene encoding shRNA targeting claudin-5, one of 30 or so proteins constituting the BBB and iBRB. The vector may be introduced stereotaxically into pre-selected regions of the brain or into the retina, rendering these regions permeable to low-molecular weight compounds up to approximately 1 kDa for the period of time during which the inducing agent, doxycycline, is administered in drinking water, but excluding potentially toxic higher molecular weight materials. We report on the use of barrier modulation in tandem with systemic drug therapy to prevent retinal degeneration and to suppress laser-induced choroidal neovascularization (CNV), the latter being the hallmark pathology associated with the exudative, or wet, form of age-related macular degeneration (AMD). These observations constitute the basis of a minimally invasive systemic therapeutic modality for retinal diseases, including retinitis pigmentosa and AMD, where, in early stage disease, the iBRB is intact and impervious to systemically administered drugs.
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Affiliation(s)
- Matthew Campbell
- Ocular Genetics Unit, Department of Genetics, Trinity College Dublin, Dublin 2, Ireland.
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24
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Campbell M, Ozaki E, Humphries P. Systemic delivery of therapeutics to neuronal tissues: a barrier modulation approach. Expert Opin Drug Deliv 2010; 7:859-69. [DOI: 10.1517/17425247.2010.490554] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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25
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Yokogawa K, Nakaharu T, Ishizaki J, Ozaki E, Takeda Y, Mabuchi H, Matsushita R, Kimura K, Nakashima E, Ichimura F, Miyamoto K. Kinetic phenotypic diagnosis of N-acetylation polymorphism in patients based on ratio of urinary metabolites of salicylazosulfapyridine. Int J Pharm 2001; 229:183-91. [PMID: 11604271 DOI: 10.1016/s0378-5173(01)00864-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We found that N-acetylation polymorphism can be evaluated from the disposition kinetics of sulfapyridine (SP) and 5-aminosalicylic acid (5-ASA) and their acetylated metabolites generated by N-acetyltransferase (NAT2) after oral administration of salicylazosulfapyridine (SASP). In 126 Japanese subjects, the homozygote of NAT2*4 was the most frequent (40%), followed by heterozygotes of NAT2*4 and mutant genes (28% NAT2*4/*6A, 15% NAT2*4/*7B, and 2% NAT2*4/*5B). Combinations of mutant genes accounted for 16%. When the relationship between the molar ratio of N-acetyl-SP (Ac-SP)/SP or N-acetyl-5-ASA(Ac-5-ASA)/5-ASA in serum and five genotypes of polymorphic NAT2* was examined in patients who received multiple doses of SASP, the molar ratios of Ac-SP/SP, rather than Ac-5-ASA/5-ASA tended to decrease according to the classification of genotype. We calculated the pharmacokinetic parameters in healthy subjects with various genotypes of polymorphic NAT2* after a single p.o. administration of SASP, according to a model of the SP metabolic pathways. The molar ratios of Ac-SP/SP in serum and urine were simulated using these parameters, and the molar ratio of Ac-SP/SP in urine at 4 days after the first administration could be categorized into ranges that were specific to various NAT2* genotypes. Thus, we were able to predict the N-acetylation polymorphic genotypes of patients by measuring the molar ratio of Ac-SP/SP in urine, after administration of SASP.
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Affiliation(s)
- K Yokogawa
- Department of Hospital Pharmacy, School of Medicine, Kanazawa University, 13-1, Takara-machi, 920-8641, Kanazawa, Japan
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26
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Nakashima E, Kubota Y, Matsushita R, Ozaki E, Ichimura F, Kawahara S, Nakanishi I, Kuno K, Matsushima K. Synergistic antitumor interaction of human monocyte chemotactant protein-1 gene transfer and modulator for tumor-infiltrating macrophages. Pharm Res 1998; 15:685-9. [PMID: 9619775 DOI: 10.1023/a:1011906600304] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE In order to evaluate the possibility of synergistic antitumor gene therapy by the gene delivery of monocyte chemotactant protein-1 (MCP-1/MCAF/IE), the effect of a biological response modulater for macrophages on tumor progression of gene transfected tumor cells was studied. METHODS Cachexia-inducing adenocarcinoma cells (cell line colon 26, clone 20) were transfected with either a control plasmid or MCP-1 cDNA. RESULTS The production of MCP-1 reached 70-80 ng/ml in vitro when transfectant cells were cultured at a cell density of 1 x 10(5) cells/ml for 3 days. Transfection of MCP-1 cDNA did not affect the growth rate in vitro. Also, MCP-1-transfectants formed tumors after intra-footpad inoculation similar in size to the parental cells. The number of infiltrating macrophages in the primary tumor of the transfectant rapidly increased from the 3rd to 5th day after inoculation as revealed by immunohistochemical staining using an antibody against mouse macrophages. An earlier, greater, but no longer-lasting increase in tumor-infiltrating macrophages was induced in tumors by MCP-1 transfection was compared to that induced by the parent cells. On the 10th day after the inoculation, the tumor-infiltrating macrophages in mice inoculated MCP-1 transfectants were decreased to a level similar to that of the parent cells. Groups of mice were treated intraperitoneally with LPS at different times after the inoculation. Tumor cells producing high levels of MCP-1 were significantly lysed by macrophages treated with LPS, whereas parental or control transfected cells were not. Conclusions. Combination immunotherapy can provide a rationale for the application of MCP-1 treatment to increase immunological responses to cancer.
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Affiliation(s)
- E Nakashima
- Hospital Pharmacy, Kanazawa University, Japan.
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Nakata S, Ozaki E, Ojima N. Gas sensing based on the dynamic nonlinear responses of a semiconductor gas sensor: dependence on the range and frequency of a cyclic temperature change. Anal Chim Acta 1998. [DOI: 10.1016/s0003-2670(98)00013-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Nakahama K, Yasukawa H, Kimura T, Mizuno K, Hiraiwa T, Ozaki E, Masamune Y. Synthesis of RepK of rolling circle plasmid pKYM is regulated by countertranscript and HU protein. DNA Res 1997; 4:199-204. [PMID: 9330908 DOI: 10.1093/dnares/4.3.199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Replication of rolling circle plasmid pKYM was regulated by RepK, a plasmid-encoded initiator protein, with HU protein and antisense RNA (copRNA) that block the expression of RepK. HU protein bound to the repK promoter in the presence of RepK protein and inhibited the transcription of repK mRNA. The copRNA would hybridize to repK mRNA and induce a stem-loop structure in which the repK Shine-Dalgarno sequence is sequestered by base pairing. Sequence substitution experiments demonstrated that this stem-loop not only inhibits translation but induces premature termination.
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Affiliation(s)
- K Nakahama
- Department of Microbiology, Faculty of Pharmaceutical Sciences, Kanazawa University, Japan
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Yasukawa H, Ozaki E, Nakahama K, Masamune Y. HU protein binding to the replication origin of the rolling-circle plasmid pKYM enhances DNA replication. Mol Gen Genet 1997; 254:548-54. [PMID: 9197414 DOI: 10.1007/s004380050450] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The RepK protein, which is encoded by the rolling-circle plasmid pKYM, binds to the PR I site in the pKYM DNA replication origin. We have identified HU as a protein that binds to the PR II and PR III sites in the replication-enhancing region which is downstream of PR I. DNA footprinting assays show that HU binds to these two sites only when RepK is bound to PR I, and that HU also enhances the binding of RepK to PR I. In vivo, pKYM was unable to transform an HU null strain. Two mutant RepK proteins, RepKW179Y, which contains a Trp-to-Tyr exchange at position 179, and RepKD277L, which contains an Asp-to-Leu mutation at residue 277, initiate DNA replication in vivo in the absence of HU. In vitro, these mutant RepK proteins form more stable complexes with the pKYM origin region than does the wild-type RepK protein. These results indicate that HU plays a role in the formation of a stable RepK-origin complex, which is required for the initiation of pKYM DNA replication.
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Affiliation(s)
- H Yasukawa
- Department of Microbiology, Faculty of Pharmaceutical Sciences, Kanazawa University, Japan
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Abstract
The esterase gene (est) of Pseudomonas putida MR-2068 was cloned into Escherichia coli JM109. An 8-kb inserted DNA directed synthesis of an esterase in E. coli. The esterase gene was in a 1.1-kb PstI-ClaI fragment within the insert DNA. The complete nucleotides of the DNA fragment containing the esterase gene were sequenced and found to include a single open reading frame of 828 bp coding for a protein of 276 amino acid residues. The open reading frame was confirmed by N-terminal amino acid sequence analysis of the purified esterase. A potential Shine-Dalgarno sequence is followed by the open reading frame. The esterase activity of the recombinant E. coli was more than 200 times higher than that of parental strain, P. putida MR-2068.
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Affiliation(s)
- E Ozaki
- Central Research Laboratories, Mitsubishi Rayon Co., Ltd., Hiroshima, Japan
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Ozaki E, Sakimae A, Numazawa R. Cloning and expression of Pseudomonas putida esterase gene in Escherichia coli and its use in enzymatic production of D-beta-acetylthioisobutyric acid. Biosci Biotechnol Biochem 1994; 58:1745-6. [PMID: 7765492 DOI: 10.1271/bbb.58.1745] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The esterase catalyzes the stereoselective hydrolysis of methyl DL-beta-acetylthioisobutyrate (DL-ester) to give D-beta-acetylthioisobutyric acid (DAT). To use the enzyme for DAT production, the esterase gene of Pseudomonas putida was cloned and expressed in E. coli. The recombinant E. coli containing the esterase gene produced a large amount of the enzyme in an active form. This strain could be used for the asymmetric synthesis of DAT.
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Affiliation(s)
- E Ozaki
- Central Research Laboratories, Mitsubishi Rayon Co., Ltd., Hiroshima, Japan
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