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Zhang P, Fleming P, Andoniou CE, Waltner OG, Bhise SS, Martins JP, McEnroe BA, Voigt V, Daly S, Kuns RD, Ekwe AP, Henden AS, Saldan A, Olver S, Varelias A, Smith C, Schmidt CR, Ensbey KS, Legg SR, Sekiguchi T, Minnie SA, Gradwell M, Wagenaar I, Clouston AD, Koyama M, Furlan SN, Kennedy GA, Ward ES, Degli-Esposti MA, Hill GR, Tey SK. IL-6-mediated endothelial injury impairs antiviral humoral immunity after bone marrow transplantation. J Clin Invest 2024; 134:e174184. [PMID: 38557487 PMCID: PMC10977988 DOI: 10.1172/jci174184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 02/09/2024] [Indexed: 04/04/2024] Open
Abstract
Endothelial function and integrity are compromised after allogeneic bone marrow transplantation (BMT), but how this affects immune responses broadly remains unknown. Using a preclinical model of CMV reactivation after BMT, we found compromised antiviral humoral responses induced by IL-6 signaling. IL-6 signaling in T cells maintained Th1 cells, resulting in sustained IFN-γ secretion, which promoted endothelial cell (EC) injury, loss of the neonatal Fc receptor (FcRn) responsible for IgG recycling, and rapid IgG loss. T cell-specific deletion of IL-6R led to persistence of recipient-derived, CMV-specific IgG and inhibited CMV reactivation. Deletion of IFN-γ in donor T cells also eliminated EC injury and FcRn loss. In a phase III clinical trial, blockade of IL-6R with tocilizumab promoted CMV-specific IgG persistence and significantly attenuated early HCMV reactivation. In sum, IL-6 invoked IFN-γ-dependent EC injury and consequent IgG loss, leading to CMV reactivation. Hence, cytokine inhibition represents a logical strategy to prevent endothelial injury, thereby preserving humoral immunity after immunotherapy.
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Affiliation(s)
- Ping Zhang
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Peter Fleming
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Christopher E. Andoniou
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Olivia G. Waltner
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Shruti S. Bhise
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Jose Paulo Martins
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | | | - Valentina Voigt
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Sheridan Daly
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Rachel D. Kuns
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Adaeze P. Ekwe
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Andrea S. Henden
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- University of Queensland, St Lucia, Queensland, Australia
- Royal Brisbane and Women’s Hospital, Herston, Queensland, Australia
| | - Alda Saldan
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- University of Queensland, St Lucia, Queensland, Australia
| | - Stuart Olver
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Antiopi Varelias
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- University of Queensland, St Lucia, Queensland, Australia
| | - Corey Smith
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Christine R. Schmidt
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Kathleen S. Ensbey
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Samuel R.W. Legg
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Tomoko Sekiguchi
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Simone A. Minnie
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Mark Gradwell
- Cancer Sciences Unit, Centre for Cancer Immunology, University of Southampton, Southampton, United Kingdom
| | - Irma Wagenaar
- Cancer Sciences Unit, Centre for Cancer Immunology, University of Southampton, Southampton, United Kingdom
| | | | - Motoko Koyama
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
| | - Scott N. Furlan
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Department of Pediatrics and
| | - Glen A. Kennedy
- University of Queensland, St Lucia, Queensland, Australia
- Royal Brisbane and Women’s Hospital, Herston, Queensland, Australia
| | - E Sally Ward
- Cancer Sciences Unit, Centre for Cancer Immunology, University of Southampton, Southampton, United Kingdom
| | - Mariapia A. Degli-Esposti
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Geoffrey R. Hill
- Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
- Division of Medical Oncology, University of Washington, Seattle, Washington, USA
| | - Siok-Keen Tey
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
- University of Queensland, St Lucia, Queensland, Australia
- Royal Brisbane and Women’s Hospital, Herston, Queensland, Australia
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Schuster IS, Sng XYX, Lau CM, Powell DR, Weizman OE, Fleming P, Neate GEG, Voigt V, Sheppard S, Maraskovsky AI, Daly S, Koyama M, Hill GR, Turner SJ, O'Sullivan TE, Sun JC, Andoniou CE, Degli-Esposti MA. Infection induces tissue-resident memory NK cells that safeguard tissue health. Immunity 2023; 56:2173-2174. [PMID: 37703831 DOI: 10.1016/j.immuni.2023.08.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
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Schuster IS, Sng XYX, Lau CM, Powell DR, Weizman OE, Fleming P, Neate GEG, Voigt V, Sheppard S, Maraskovsky AI, Daly S, Koyama M, Hill GR, Turner SJ, O'Sullivan TE, Sun JC, Andoniou CE, Degli-Esposti MA. Infection induces tissue-resident memory NK cells that safeguard tissue health. Immunity 2023; 56:531-546.e6. [PMID: 36773607 PMCID: PMC10360410 DOI: 10.1016/j.immuni.2023.01.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 10/17/2022] [Accepted: 01/17/2023] [Indexed: 02/12/2023]
Abstract
Tissue health is dictated by the capacity to respond to perturbations and then return to homeostasis. Mechanisms that initiate, maintain, and regulate immune responses in tissues are therefore essential. Adaptive immunity plays a key role in these responses, with memory and tissue residency being cardinal features. A corresponding role for innate cells is unknown. Here, we have identified a population of innate lymphocytes that we term tissue-resident memory-like natural killer (NKRM) cells. In response to murine cytomegalovirus infection, we show that circulating NK cells were recruited in a CX3CR1-dependent manner to the salivary glands where they formed NKRM cells, a long-lived, tissue-resident population that prevented autoimmunity via TRAIL-dependent elimination of CD4+ T cells. Thus, NK cells develop adaptive-like features, including long-term residency in non-lymphoid tissues, to modulate inflammation, restore immune equilibrium, and preserve tissue health. Modulating the functions of NKRM cells may provide additional strategies to treat inflammatory and autoimmune diseases.
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Affiliation(s)
- Iona S Schuster
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia; Centre for Experimental Immunology, Lions Eye Institute, Nedlands, WA, Australia.
| | - Xavier Y X Sng
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Colleen M Lau
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - David R Powell
- Monash Bioinformatics Platform, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Orr-El Weizman
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Peter Fleming
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia; Centre for Experimental Immunology, Lions Eye Institute, Nedlands, WA, Australia
| | - Georgia E G Neate
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Valentina Voigt
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia; Centre for Experimental Immunology, Lions Eye Institute, Nedlands, WA, Australia
| | - Sam Sheppard
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Andreas I Maraskovsky
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia; Centre for Experimental Immunology, Lions Eye Institute, Nedlands, WA, Australia
| | - Sheridan Daly
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, WA, Australia
| | - Motoko Koyama
- Translational Science and Therapeutics, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - Geoffrey R Hill
- Translational Science and Therapeutics, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - Stephen J Turner
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Timothy E O'Sullivan
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Joseph C Sun
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Christopher E Andoniou
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia; Centre for Experimental Immunology, Lions Eye Institute, Nedlands, WA, Australia
| | - Mariapia A Degli-Esposti
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia; Centre for Experimental Immunology, Lions Eye Institute, Nedlands, WA, Australia.
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Jiang X, Rashwan R, Voigt V, Nerbonne J, Hunt DM, Carvalho LS. Molecular, Cellular and Functional Changes in the Retinas of Young Adult Mice Lacking the Voltage-Gated K + Channel Subunits Kv8.2 and K2.1. Int J Mol Sci 2021; 22:4877. [PMID: 34063002 PMCID: PMC8124447 DOI: 10.3390/ijms22094877] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 04/24/2021] [Accepted: 04/29/2021] [Indexed: 02/06/2023] Open
Abstract
Cone Dystrophy with Supernormal Rod Response (CDSRR) is a rare autosomal recessive disorder leading to severe visual impairment in humans, but little is known about its unique pathophysiology. We have previously shown that CDSRR is caused by mutations in the KCNV2 (Potassium Voltage-Gated Channel Modifier Subfamily V Member 2) gene encoding the Kv8.2 subunit, a modulatory subunit of voltage-gated potassium (Kv) channels. In a recent study, we validated a novel mouse model of Kv8.2 deficiency at a late stage of the disease and showed that it replicates the human electroretinogram (ERG) phenotype. In this current study, we focused our investigation on young adult retinas to look for early markers of disease and evaluate their effect on retinal morphology, electrophysiology and immune response in both the Kv8.2 knockout (KO) mouse and in the Kv2.1 KO mouse, the obligate partner of Kv8.2 in functional retinal Kv channels. By evaluating the severity of retinal dystrophy in these KO models, we demonstrated that retinas of Kv KO mice have significantly higher apoptotic cells, a thinner outer nuclear cell layer and increased activated microglia cells in the subretinal space. Our results indicate that in the murine retina, the loss of Kv8.2 subunits contributes to early cellular and physiological changes leading to retinal dysfunction. These results could have potential implications in the early management of CDSRR despite its relatively nonprogressive nature in humans.
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Affiliation(s)
- Xiaotian Jiang
- Centre for Ophthalmology and Vision Science, The University of Western Australia, Perth, WA 6009, Australia; (X.J.); (D.M.H.)
| | - Rabab Rashwan
- Lions Eye Institute, Nedlands, WA 6009, Australia; (R.R.); (V.V.)
- Department of Microbiology and Immunology, Faculty of Medicine, Minia University, Minia 61519, Egypt
| | - Valentina Voigt
- Lions Eye Institute, Nedlands, WA 6009, Australia; (R.R.); (V.V.)
| | - Jeanne Nerbonne
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO 63110, USA;
| | - David M. Hunt
- Centre for Ophthalmology and Vision Science, The University of Western Australia, Perth, WA 6009, Australia; (X.J.); (D.M.H.)
- Lions Eye Institute, Nedlands, WA 6009, Australia; (R.R.); (V.V.)
| | - Livia S. Carvalho
- Centre for Ophthalmology and Vision Science, The University of Western Australia, Perth, WA 6009, Australia; (X.J.); (D.M.H.)
- Lions Eye Institute, Nedlands, WA 6009, Australia; (R.R.); (V.V.)
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6
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Newbold A, Warren FC, Taylor RS, Hulme C, Burnett S, Aas B, Botella C, Burkhardt F, Ehring T, Fontaine JRJ, Frost M, Garcia-Palacios A, Greimel E, Hoessle C, Hovasapian A, Huyghe VEI, Lochner J, Molinari G, Pekrun R, Platt B, Rosenkranz T, Scherer KR, Schlegel K, Schulte-Korne G, Suso C, Voigt V, Watkins ER. Promotion of mental health in young adults via mobile phone app: study protocol of the ECoWeB (emotional competence for well-being in Young adults) cohort multiple randomised trials. BMC Psychiatry 2020; 20:458. [PMID: 32962684 PMCID: PMC7510072 DOI: 10.1186/s12888-020-02857-w] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 09/03/2020] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Promoting well-being and preventing poor mental health in young people is a major global priority. Building emotional competence (EC) skills via a mobile app may be an effective, scalable and acceptable way to do this. However, few large-scale controlled trials have examined the efficacy of mobile apps in promoting mental health in young people; none have tailored the app to individual profiles. METHOD/DESIGN The Emotional Competence for Well-Being in Young Adults cohort multiple randomised controlled trial (cmRCT) involves a longitudinal prospective cohort to examine well-being, mental health and EC in 16-22 year olds across 12 months. Within the cohort, eligible participants are entered to either the PREVENT trial (if selected EC scores at baseline within worst-performing quartile) or to the PROMOTE trial (if selected EC scores not within worst-performing quartile). In both trials, participants are randomised (i) to continue with usual practice, repeated assessments and a self-monitoring app; (ii) to additionally receive generic cognitive-behavioural therapy self-help in app; (iii) to additionally receive personalised EC self-help in app. In total, 2142 participants aged 16 to 22 years, with no current or past history of major depression, bipolar disorder or psychosis will be recruited across UK, Germany, Spain, and Belgium. Assessments take place at baseline (pre-randomisation), 1, 3 and 12 months post-randomisation. Primary endpoint and outcome for PREVENT is level of depression symptoms on the Patient Health Questionnaire-9 at 3 months; primary endpoint and outcome for PROMOTE is emotional well-being assessed on the Warwick-Edinburgh Mental Wellbeing Scale at 3 months. Depressive symptoms, anxiety, well-being, health-related quality of life, functioning and cost-effectiveness are secondary outcomes. Compliance, adverse events and potentially mediating variables will be carefully monitored. CONCLUSIONS The trial aims to provide a better understanding of the causal role of learning EC skills using interventions delivered via mobile phone apps with respect to promoting well-being and preventing poor mental health in young people. This knowledge will be used to develop and disseminate innovative evidence-based, feasible, and effective Mobile-health public health strategies for preventing poor mental health and promoting well-being. TRIAL REGISTRATION ClinicalTrials.gov ( www.clinicaltrials.org ). Number of identification: NCT04148508 November 2019.
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Affiliation(s)
- A. Newbold
- grid.8391.30000 0004 1936 8024Mood Disorders Centre, School of Psychology, Sir Henry Wellcome Building for Mood Disorders Research, University of Exeter, Exeter, EX4 4LN UK
| | - F. C. Warren
- grid.8391.30000 0004 1936 8024College of Medicine and Health, University of Exeter, Exeter, UK
| | - R. S. Taylor
- grid.8391.30000 0004 1936 8024College of Medicine and Health, University of Exeter, Exeter, UK ,grid.8756.c0000 0001 2193 314XMRC/CSO Social and Public Health Sciences Unit & Robertson Centre for Biostatistics, Institute of Health and Well Being, University of Glasgow, Glasgow, UK
| | - C. Hulme
- grid.8391.30000 0004 1936 8024College of Medicine and Health, University of Exeter, Exeter, UK
| | - S. Burnett
- grid.8391.30000 0004 1936 8024Mood Disorders Centre, School of Psychology, Sir Henry Wellcome Building for Mood Disorders Research, University of Exeter, Exeter, EX4 4LN UK
| | - B. Aas
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital, LMU, Munich, Germany
| | - C. Botella
- grid.9612.c0000 0001 1957 9153Universitat Jaume I, Castelló de la Plana, Spain ,grid.413448.e0000 0000 9314 1427CIBER Fisiopatología Obesidad y Nutrición (CIBERObn), Instituto Salud Carlos III, Madrid, Spain
| | | | - T. Ehring
- grid.5252.00000 0004 1936 973XDepartment of Psychology, LMU Munich, Munich, Germany
| | - J. R. J. Fontaine
- grid.5342.00000 0001 2069 7798Department of Work, Organization and Society, Ghent University, Ghent, Belgium
| | - M. Frost
- Monsenso ApS, Copenhagen, Denmark
| | - A. Garcia-Palacios
- grid.9612.c0000 0001 1957 9153Universitat Jaume I, Castelló de la Plana, Spain ,grid.413448.e0000 0000 9314 1427CIBER Fisiopatología Obesidad y Nutrición (CIBERObn), Instituto Salud Carlos III, Madrid, Spain
| | - E. Greimel
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital, LMU, Munich, Germany
| | - C. Hoessle
- grid.5252.00000 0004 1936 973XDepartment of Psychology, LMU Munich, Munich, Germany
| | - A. Hovasapian
- grid.5342.00000 0001 2069 7798Department of Work, Organization and Society, Ghent University, Ghent, Belgium
| | - VEI Huyghe
- grid.5342.00000 0001 2069 7798Department of Work, Organization and Society, Ghent University, Ghent, Belgium
| | - J. Lochner
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital, LMU, Munich, Germany ,grid.5252.00000 0004 1936 973XDepartment of Psychology, LMU Munich, Munich, Germany
| | - G. Molinari
- grid.413448.e0000 0000 9314 1427CIBER Fisiopatología Obesidad y Nutrición (CIBERObn), Instituto Salud Carlos III, Madrid, Spain
| | - R. Pekrun
- grid.411958.00000 0001 2194 1270Department of Psychology, University of Essex, UK, and Institute for Positive Psychology and Education, Australian Catholic University, Sydney, Australia
| | - B. Platt
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital, LMU, Munich, Germany
| | - T. Rosenkranz
- grid.5252.00000 0004 1936 973XDepartment of Psychology, LMU Munich, Munich, Germany
| | - K. R. Scherer
- grid.8591.50000 0001 2322 4988University of Geneva, Geneva, Switzerland
| | - K. Schlegel
- grid.5734.50000 0001 0726 5157University of Bern, Bern, Switzerland
| | - G. Schulte-Korne
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital, LMU, Munich, Germany
| | - C. Suso
- grid.9612.c0000 0001 1957 9153Universitat Jaume I, Castelló de la Plana, Spain
| | - V. Voigt
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, University Hospital, LMU, Munich, Germany
| | - E. R. Watkins
- grid.8391.30000 0004 1936 8024Mood Disorders Centre, School of Psychology, Sir Henry Wellcome Building for Mood Disorders Research, University of Exeter, Exeter, EX4 4LN UK
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Brunet AA, Fuller-Carter PI, Miller AL, Voigt V, Vasiliou S, Rashwan R, Hunt DM, Carvalho LS. Validating Fluorescent Chrnb4.EGFP Mouse Models for the Study of Cone Photoreceptor Degeneration. Transl Vis Sci Technol 2020; 9:28. [PMID: 32879784 PMCID: PMC7442867 DOI: 10.1167/tvst.9.9.28] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 06/29/2020] [Indexed: 02/07/2023] Open
Abstract
Purpose To validate the application of a known transgenic mouse line with green fluorescent cones (Chrnb4.EGFP) to study cone photoreceptor biology and function in health and disease. Methods Chrnb4.EGFP retinas containing GFP+ cones were compared with retinas without the GFP transgene via immunohistochemistry, quantitative real-time polymerase chain reaction, electroretinograms, and flow cytometry. The Chrnb4.EGFP line was backcrossed to the mouse models of cone degeneration, Pde6ccpfl1 and Gnat2cpfl3 , generating the new lines Gnat2.GFP and Pde6c.GFP, which were also studied as described. Results GFP expression spanned the length of the cone cell in the Chrnb4.EGFP line, as well as in the novel Gnat2.GFP and Pde6c.GFP lines. The effect of GFP expression showed no significant changes to outer nuclear layer cell death, cone-specific gene expression, and immune response activation. A temporal decrease in GFP expression over time was observed, but GFP fluorescence was still detected through flow cytometry as late as 6 months. Furthermore, a functional analysis of photopic and scotopic electroretinogram responses of the Chrnb4 mouse showed no significant difference between GFP- and GFP+ mice, whereas electroretinogram recordings for the Pde6c.GFP and Gnat2.GFP lines matched previous reports from the original lines. Conclusions This study demonstrates that the Chrnb4.EGFP mouse can be a powerful tool to overcome the limitations of studying cone biology, including the use of this line to study different types of cone degeneration. Translational Relevance This work validates research tools that could potentially offer more reliable preclinical data in the development of treatments for cone-mediated vision loss conditions, shortening the gap to clinical translation.
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Affiliation(s)
- Alicia A. Brunet
- Centre for Ophthalmology and Visual Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
- Lions Eye Institute, Nedlands, Western Australia, Australia
| | | | - Annie L. Miller
- Centre for Ophthalmology and Visual Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
- Lions Eye Institute, Nedlands, Western Australia, Australia
| | | | | | - Rabab Rashwan
- Lions Eye Institute, Nedlands, Western Australia, Australia
- Department of Microbiology and Immunology, Faculty of Medicine, Minia University, Minia, Egypt
| | - David M. Hunt
- Centre for Ophthalmology and Visual Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
- Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Livia S. Carvalho
- Centre for Ophthalmology and Visual Sciences, The University of Western Australia, Nedlands, Western Australia, Australia
- Lions Eye Institute, Nedlands, Western Australia, Australia
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Martins JP, Andoniou CE, Fleming P, Kuns RD, Schuster IS, Voigt V, Daly S, Varelias A, Tey SK, Degli-Esposti MA, Hill GR. Strain-specific antibody therapy prevents cytomegalovirus reactivation after transplantation. Science 2019; 363:288-293. [PMID: 30655443 DOI: 10.1126/science.aat0066] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 08/19/2018] [Accepted: 11/15/2018] [Indexed: 12/18/2022]
Abstract
Cytomegalovirus infection is a frequent and life-threatening complication that significantly limits positive transplantation outcomes. We developed preclinical mouse models of cytomegalovirus reactivation after transplantation and found that humoral immunity is essential for preventing viral recrudescence. Preexisting antiviral antibodies decreased after transplant in the presence of graft-versus-host disease and were not replaced, owing to poor reconstitution of donor B cells and elimination of recipient plasma cells. Viral reactivation was prevented by the transfer of immune serum, without a need to identify and target specific antigenic determinants. Notably, serotherapy afforded complete protection, provided that the serum was matched to the infecting viral strain. Thus, we define the mechanisms for cytomegalovirus reactivation after transplantation and identify a readily translatable strategy of exceptional potency, which avoids the constraints of cellular therapies.
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Affiliation(s)
- Jose Paulo Martins
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia.,School of Medicine, University of Queensland, Brisbane, Queensland, Australia
| | - Christopher E Andoniou
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, University of Western Australia, Perth, Western Australia, Australia.,Centre for Experimental Immunology, Lions Eye Institute, Perth, Western Australia, Australia.,Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Peter Fleming
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, University of Western Australia, Perth, Western Australia, Australia.,Centre for Experimental Immunology, Lions Eye Institute, Perth, Western Australia, Australia
| | - Rachel D Kuns
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Iona S Schuster
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, University of Western Australia, Perth, Western Australia, Australia.,Centre for Experimental Immunology, Lions Eye Institute, Perth, Western Australia, Australia.,Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Valentina Voigt
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, University of Western Australia, Perth, Western Australia, Australia.,Centre for Experimental Immunology, Lions Eye Institute, Perth, Western Australia, Australia
| | - Sheridan Daly
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, University of Western Australia, Perth, Western Australia, Australia.,Centre for Experimental Immunology, Lions Eye Institute, Perth, Western Australia, Australia
| | - Antiopi Varelias
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Siok-Keen Tey
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Mariapia A Degli-Esposti
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, University of Western Australia, Perth, Western Australia, Australia. .,Centre for Experimental Immunology, Lions Eye Institute, Perth, Western Australia, Australia.,Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Geoffrey R Hill
- QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia. .,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.,Division of Medical Oncology, University of Washington, Seattle, WA, USA
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Voigt V, Andoniou CE, Schuster IS, Oszmiana A, Ong ML, Fleming P, Forrester JV, Degli-Esposti MA. Cytomegalovirus establishes a latent reservoir and triggers long-lasting inflammation in the eye. PLoS Pathog 2018; 14:e1007040. [PMID: 29852019 PMCID: PMC5978784 DOI: 10.1371/journal.ppat.1007040] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 04/17/2018] [Indexed: 01/15/2023] Open
Abstract
Recent outbreaks of Ebola and Zika have highlighted the possibility that viruses may cause enduring infections in tissues like the eye, including the neural retina, which have been considered immune privileged. Whether this is a peculiarity of exotic viruses remains unclear, since the impact of more common viral infections on neural compartments has not been examined, especially in immunocompetent hosts. Cytomegalovirus is a common, universally distributed pathogen, generally innocuous in healthy individuals. Whether in immunocompetent hosts cytomegalovirus can access the eye, and reside there indefinitely, was unknown. Using the well-established murine cytomegalovirus infection model, we show that systemic infection of immunocompetent hosts results in broad ocular infection, chronic inflammation and establishment of a latent viral pool in the eye. Infection leads to infiltration and accumulation of anti-viral CD8+ T cells in the eye, and to the development of tissue resident memory T cells that localize to the eye, including the retina. These findings identify the eye as an unexpected reservoir for cytomegalovirus, and suggest that common viruses may target this organ more frequently than appreciated. Notably, they also highlight that infection triggers sustained inflammatory responses in the eye, including the neural retina.
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Affiliation(s)
- Valentina Voigt
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Crawley, Western Australia, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Christopher E. Andoniou
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Crawley, Western Australia, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Iona S. Schuster
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Crawley, Western Australia, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Anna Oszmiana
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Crawley, Western Australia, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Monique L. Ong
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Crawley, Western Australia, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Peter Fleming
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Crawley, Western Australia, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - John V. Forrester
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Crawley, Western Australia, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
- University of Aberdeen, Division of Applied Medicine, Section of Immunology and Infection, Institute of Medical Sciences, Foresterhill, Aberdeen, Scotland, United Kingdom
| | - Mariapia A. Degli-Esposti
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Crawley, Western Australia, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
- * E-mail:
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10
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Hermelink K, Voigt V, Kaste J, Neufeld F, Wuerstlein R, Buhner M, Munzel K, Rjosk-Dendorfer D, Grandl S, Braun M, von Koch FE, Hartl K, Hasmuller S, Bauerfeind I, Debus G, Herschbach P, Harbeck N. Elucidating Pretreatment Cognitive Impairment in Breast Cancer Patients: The Impact of Cancer-related Post-traumatic Stress. J Natl Cancer Inst 2015; 107:djv099. [DOI: 10.1093/jnci/djv099] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 03/12/2015] [Indexed: 12/20/2022] Open
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11
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Robinson PC, Claushuis TAM, Cortes A, Martin TM, Evans DM, Leo P, Mukhopadhyay P, Bradbury LA, Cremin K, Harris J, Maksymowych WP, Inman RD, Rahman P, Haroon N, Gensler L, Powell JE, van der Horst-Bruinsma IE, Hewitt AW, Craig JE, Lim LL, Wakefield D, McCluskey P, Voigt V, Fleming P, Degli-Esposti M, Pointon JJ, Weisman MH, Wordsworth BP, Reveille JD, Rosenbaum JT, Brown MA. Genetic dissection of acute anterior uveitis reveals similarities and differences in associations observed with ankylosing spondylitis. Arthritis Rheumatol 2015; 67:140-51. [PMID: 25200001 DOI: 10.1002/art.38873] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 09/04/2014] [Indexed: 12/14/2022]
Abstract
OBJECTIVE To use high-density genotyping to investigate the genetic associations of acute anterior uveitis (AAU) in patients with and those without ankylosing spondylitis (AS). METHODS We genotyped samples from 1,711 patients with AAU (either primary or combined with AS), 2,339 AS patients without AAU, and 10,000 control subjects on an Illumina Immunochip Infinium microarray. We also used data for AS patients from previous genome-wide association studies to investigate the AS risk locus ANTXR2 for its putative effect in AAU. ANTXR2 expression in mouse eyes was investigated by real-time quantitative reverse transcription-polymerase chain reaction. RESULTS A comparison between all patients with AAU and healthy control subjects showed strong association over HLA-B, corresponding to the HLA-B27 tag single-nucleotide polymorphism rs116488202. The association of 3 non-major histocompatibility complex loci, IL23R, the intergenic region 2p15, and ERAP1, reached genome-wide significance (P < 5 × 10(-8)). Five loci harboring the immune-related genes IL10-IL19, IL18R1-IL1R1, IL6R, the chromosome 1q32 locus harboring KIF21B, as well as the eye-related gene EYS, were also associated, reaching a suggestive level of significance (P < 5 × 10(-6)). Several previously confirmed AS associations demonstrated significant differences in effect size between AS patients with AAU and AS patients without AAU. ANTXR2 expression varied across eye compartments. CONCLUSION These findings of both novel AAU-specific associations and associations shared with AS demonstrate overlapping but also distinct genetic susceptibility loci for AAU and AS. The associations in IL10 and IL18R1 are shared with inflammatory bowel disease, suggesting common etiologic pathways.
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12
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Fleming P, Kvansakul M, Voigt V, Kile BT, Kluck RM, Huang DCS, Degli-Esposti MA, Andoniou CE. MCMV-mediated inhibition of the pro-apoptotic Bak protein is required for optimal in vivo replication. PLoS Pathog 2013; 9:e1003192. [PMID: 23468630 PMCID: PMC3585157 DOI: 10.1371/journal.ppat.1003192] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 12/28/2012] [Indexed: 01/29/2023] Open
Abstract
Successful replication and transmission of large DNA viruses such as the cytomegaloviruses (CMV) family of viruses depends on the ability to interfere with multiple aspects of the host immune response. Apoptosis functions as a host innate defence mechanism against viral infection, and the capacity to interfere with this process is essential for the replication of many viruses. The Bcl-2 family of proteins are the principle regulators of apoptosis, with two pro-apoptotic members, Bax and Bak, essential for apoptosis to proceed. The m38.5 protein encoded by murine CMV (MCMV) has been identified as Bax-specific inhibitor of apoptosis. Recently, m41.1, a protein product encoded by the m41 open reading frame (ORF) of MCMV, has been shown to inhibit Bak activity in vitro. Here we show that m41.1 is critical for optimal MCMV replication in vivo. Growth of a m41.1 mutant was attenuated in multiple organs, a defect that was not apparent in Bak−/− mice. Thus, m41.1 promotes MCMV replication by inhibiting Bak-dependent apoptosis during in vivo infection. The results show that Bax and Bak mediate non-redundant functions during MCMV infection and that the virus produces distinct inhibitors for each protein to counter the activity of these proteins. The cytomegaloviruses (CMV) are a family of viruses that establish a latent infection that lasts for the life of the host, with the virus able to reactivate when the host is immunosuppressed. We have used murine CMV (MCMV) as a model to understand how CMV interferes with the anti-viral immune response. Apoptosis, or programmed cell death, is one of the defence mechanisms used by multicellular organisms to impair viral infection. In order for viral replication to proceed, many viruses have evolved mechanisms to prevent the apoptosis of infected host cells. Under most circumstances the activation of Bax, or the closely related protein Bak, is required for apoptosis to proceed. The m41.1 protein was recently identified as a candidate Bak inhibitor during in vitro infection. We have generated a mutant virus which is unable to produce the m41.1 protein and found that growth of this virus was attenuated in wild-type mice. Importantly, growth of the mutant virus was equivalent to that of the wild-type virus in mice lacking the Bak protein. These studies establish that m41.1 is an inhibitor of Bak and that the capacity to prevent apoptosis triggered by Bak is required for efficient replication of MCMV in vivo.
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Affiliation(s)
- Peter Fleming
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Nedlands, Western Australia, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Marc Kvansakul
- Department of Biochemistry, La Trobe University, Melbourne, Victoria, Australia
| | - Valentina Voigt
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Nedlands, Western Australia, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Benjamin T. Kile
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Ruth M. Kluck
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - David C. S. Huang
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Melbourne, Victoria, Australia
| | - Mariapia A. Degli-Esposti
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Nedlands, Western Australia, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
| | - Christopher E. Andoniou
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Nedlands, Western Australia, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Nedlands, Western Australia, Australia
- * E-mail:
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13
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Zinkernagel MS, Chinnery HR, Ong ML, Petitjean C, Voigt V, McLenachan S, McMenamin PG, Hill GR, Forrester JV, Wikstrom ME, Degli-Esposti MA. Interferon γ-dependent migration of microglial cells in the retina after systemic cytomegalovirus infection. Am J Pathol 2013; 182:875-85. [PMID: 23313136 DOI: 10.1016/j.ajpath.2012.11.031] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Revised: 11/19/2012] [Accepted: 11/26/2012] [Indexed: 02/06/2023]
Abstract
Microglial cells are the resident macrophages of the central nervous system and participate in both innate and adaptive immune responses but can also lead to exacerbation of neurodegenerative pathologies after viral infections. Microglia in the outer layers of the retina and the subretinal space are thought to be involved in retinal diseases where low-grade chronic inflammation and oxidative stress play a role. This study investigated the effect of systemic infection with murine cytomegalovirus on the distribution and dynamics of retinal microglia cells. Systemic infection with murine cytomegalovirus elicited a significant increase in the number of microglia in the subretinal space and an accumulation of iris macrophages, along with morphological signs of activation. Interferon γ (IFN-γ)-deficient mice failed to induce changes in microglia distribution. Bone marrow chimera experiments confirmed that microglial cells in the subretinal space were not recruited from the circulating monocyte pool, but rather represented an accumulation of resident microglial cells from within the retina. Our results demonstrate that a systemic viral infection can lead to IFN-γ-mediated accumulation of microglia into the outer retinal layers and offer proof of concept that systemic viral infections alter the ocular microenvironment and therefore, may influence the course of diseases such as macular degeneration, diabetic retinopathy, or autoimmune uveitis, where low-grade inflammation is implicated.
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Affiliation(s)
- Martin S Zinkernagel
- Ocular Immunology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Perth, Australia
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14
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Andrews DM, Estcourt MJ, Andoniou CE, Wikstrom ME, Khong A, Voigt V, Fleming P, Tabarias H, Hill GR, van der Most RG, Scalzo AA, Smyth MJ, Degli-Esposti MA. Innate immunity defines the capacity of antiviral T cells to limit persistent infection. ACTA ACUST UNITED AC 2010; 207:1333-43. [PMID: 20513749 PMCID: PMC2882831 DOI: 10.1084/jem.20091193] [Citation(s) in RCA: 174] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Effective immunity requires the coordinated activation of innate and adaptive immune responses. Natural killer (NK) cells are central innate immune effectors, but can also affect the generation of acquired immune responses to viruses and malignancies. How NK cells influence the efficacy of adaptive immunity, however, is poorly understood. Here, we show that NK cells negatively regulate the duration and effectiveness of virus-specific CD4+ and CD8+ T cell responses by limiting exposure of T cells to infected antigen-presenting cells. This impacts the quality of T cell responses and the ability to limit viral persistence. Our studies provide unexpected insights into novel interplays between innate and adaptive immune effectors, and define the critical requirements for efficient control of viral persistence.
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Affiliation(s)
- Daniel M Andrews
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, University Department of Medicine, University of Western Australia, Nedlands, Western Australia 6009, Australia
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15
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Gorman S, Harvey NL, Moro D, Lloyd ML, Voigt V, Smith LM, Lawson MA, Shellam GR. Mixed infection with multiple strains of murine cytomegalovirus occurs following simultaneous or sequential infection of immunocompetent mice. J Gen Virol 2006; 87:1123-1132. [PMID: 16603512 DOI: 10.1099/vir.0.81583-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [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: 01/21/2023] Open
Abstract
As with human cytomegalovirus (HCMV) infection of humans, murine CMV (MCMV) infection is widespread in its natural host, the house mouse Mus domesticus, and may consist of mixed infection with different CMV isolates. The incidence and mechanisms by which mixed infection occurs in free-living mice are unknown. This study used two approaches to determine whether mixed infection with MCMV could be established in laboratory mice. The first utilized two naturally occurring MCMV strains, N1 and G4, into which the lacZ gene was inserted by homologous recombination. The lacZ gene was used to track recombinant and parental viruses in simultaneously coinfected mice. In the second approach, a real-time quantitative PCR (qPCR) assay was used to detect viral immediate-early 1 (ie1) gene sequences in mice successively coinfected with G4 and then with the K181 MCMV strain. In both systems, mixed infection was detected in the salivary glands and lungs of experimentally infected mice. MCMV-specific antibody in sera and G4 IE1-specific cytotoxic lymphocyte responses in the spleens of twice-infected mice did not prevent reinfection. Finally, the prevalence of mixed infection in free-living mice trapped in four Australian locations was investigated using real-time qPCR to detect ie1 DNA sequences of N1, G4 and K181. Mixed infection with MCMVs containing the G4 and K181 ie1 sequences was detected in the salivary glands of 34·2 % of trapped mice. The observations that mixed infections are common in free-living M. domesticus and are acquired by immunocompetent mice through simultaneous or successive infections are important for vaccine development.
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Affiliation(s)
- Shelley Gorman
- Discipline of Microbiology, School of Biomedical and Chemical Sciences, M502, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Nicole L Harvey
- Discipline of Microbiology, School of Biomedical and Chemical Sciences, M502, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Dorian Moro
- School of Natural Sciences, Edith Cowan University, Joondalup, WA 6027, Australia
| | - Megan L Lloyd
- Discipline of Microbiology, School of Biomedical and Chemical Sciences, M502, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Valentina Voigt
- Centre for Experimental Immunology, Lions Eye Institute, 2 Verdun Street, Nedlands, WA 6009, Australia
- Discipline of Microbiology, School of Biomedical and Chemical Sciences, M502, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Lee M Smith
- Discipline of Microbiology, School of Biomedical and Chemical Sciences, M502, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Malcolm A Lawson
- Discipline of Microbiology, School of Biomedical and Chemical Sciences, M502, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Geoffrey R Shellam
- Discipline of Microbiology, School of Biomedical and Chemical Sciences, M502, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
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16
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Thien CBF, Blystad FD, Zhan Y, Lew AM, Voigt V, Andoniou CE, Langdon WY. Loss of c-Cbl RING finger function results in high-intensity TCR signaling and thymic deletion. EMBO J 2005; 24:3807-19. [PMID: 16211006 PMCID: PMC1276723 DOI: 10.1038/sj.emboj.7600841] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2005] [Accepted: 09/19/2005] [Indexed: 01/15/2023] Open
Abstract
Signaling from the T-cell receptor (TCR) in thymocytes is negatively regulated by the RING finger-type ubiquitin ligase c-Cbl. To further investigate this regulation, we generated mice with a loss-of-function mutation in the c-Cbl RING finger domain. These mice exhibit complete thymic deletion by young adulthood, which is not caused by a developmental block, lack of progenitors or peripheral T-cell activation. Rather, this phenotype correlates with greatly increased expression of the CD5 and CD69 activation markers and increased sensitivity to anti-CD3-induced cell death. Thymic loss contrasts the normal fate of the c-Cbl-/- thymus, even though thymocytes from both mutant mice show equivalent enhancement in proximal TCR signaling, Erk activation and calcium mobilization. Remarkably, only the RING finger mutant thymocytes show prominent TCR-directed activation of Akt. We show that the mutant c-Cbl protein itself is essential for activating this pathway by recruiting the p85 regulatory subunit of PI 3-kinase. This study provides a unique model for analyzing high-intensity TCR signals that cause thymocyte deletion and highlights multiple roles of c-Cbl in regulating this process.
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MESH Headings
- Amino Acid Substitution
- Animals
- Antigens, CD/analysis
- Antigens, Differentiation, T-Lymphocyte/analysis
- Apoptosis
- CD3 Complex/analysis
- CD5 Antigens/analysis
- Extracellular Signal-Regulated MAP Kinases/analysis
- Lectins, C-Type
- Lymphocyte Specific Protein Tyrosine Kinase p56(lck)/analysis
- Mice
- Mice, Transgenic
- Mutation
- Phosphatidylinositol 3-Kinases/metabolism
- Protein Structure, Tertiary
- Proto-Oncogene Proteins c-cbl/chemistry
- Proto-Oncogene Proteins c-cbl/genetics
- Proto-Oncogene Proteins c-cbl/physiology
- Receptors, Antigen, T-Cell/immunology
- Receptors, Antigen, T-Cell/physiology
- Signal Transduction
- Thymus Gland/immunology
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Affiliation(s)
- Christine B F Thien
- School of Surgery and Pathology, University of Western Australia, Crawley, Australia
| | - Frøydis D Blystad
- School of Surgery and Pathology, University of Western Australia, Crawley, Australia
| | - Yifan Zhan
- The Walter and Eliza Hall Institute of Medical Research, Royal Parade, Melbourne, Australia
| | - Andrew M Lew
- The Walter and Eliza Hall Institute of Medical Research, Royal Parade, Melbourne, Australia
| | - Valentina Voigt
- Centre for Experimental Immunology, The Lions Eye Institute, Nedlands, Australia
| | | | - Wallace Y Langdon
- School of Surgery and Pathology, University of Western Australia, Crawley, Australia
- School of Surgery and Pathology, University of Western Australia, Crawley, WA 6009, Australia. Tel.: +61 8 9346 2939; Fax: +61 8 9346 2891; E-mail:
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17
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Andoniou CE, van Dommelen SLH, Voigt V, Andrews DM, Brizard G, Asselin-Paturel C, Delale T, Stacey KJ, Trinchieri G, Degli-Esposti MA. Interaction between conventional dendritic cells and natural killer cells is integral to the activation of effective antiviral immunity. Nat Immunol 2005; 6:1011-9. [PMID: 16142239 DOI: 10.1038/ni1244] [Citation(s) in RCA: 227] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2005] [Accepted: 07/27/2005] [Indexed: 01/15/2023]
Abstract
Dendritic cells (DCs) regulate various aspects of innate immunity, including natural killer (NK) cell function. Here we define the mechanisms involved in DC-NK cell interactions during viral infection. NK cells were efficiently activated by murine cytomegalovirus (MCMV)-infected CD11b(+) DCs. NK cell cytotoxicity required interferon-alpha and interactions between the NKG2D activating receptor and NKG2D ligand, whereas the production of interferon-gamma by NK cells relied mainly on DC-derived interleukin 18. Although Toll-like receptor 9 contributes to antiviral immunity, we found that signaling pathways independent of Toll-like receptor 9 were important in generating immune responses to MCMV, including the production of interferon-alpha and the induction of NK cell cytotoxicity. Notably, adoptive transfer of MCMV-activated CD11b(+) DCs resulted in improved control of MCMV infection, indicating that these cells participate in controlling viral replication in vivo.
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Affiliation(s)
- Christopher E Andoniou
- Immunology and Virology Program, Centre for Ophthalmology and Visual Science, The University of Western Australia, Crowley 6009, Western Australia, Australia
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18
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Voigt V, Günzel T, Kretzschmar K, Wagner T, Brunner FX. [Frontal cephalgia in a 9 year old child]. HNO 2005; 54:112-5. [PMID: 16034632 DOI: 10.1007/s00106-005-1312-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- V Voigt
- Hals-Nasen-Ohren-Klinik, Klinikum Augsburg.
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19
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Lips DJ, van Reisen MT, Voigt V, Venekamp W. Diagnosis and treatment of levothyroxine pseudomalabsorption. Neth J Med 2004; 62:114-8. [PMID: 15255080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
Many causes of malabsorption of levothyroxine in patients with hypothyroidism have been thoroughly described in literature. Pseudomalabsorption, poor compliance of the patient with the therapy regime, is the most common cause of failure of levothyroxine therapy. Pseudomalabsorption is characterised by a deficient diagnostic process, patient denial and difficulties in treatment. The present article provides guidelines in diagnosing and treating pseudomalabsorption in hypothyroidism.
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Affiliation(s)
- D J Lips
- Atrium Medical Centre Brunssum, The Netherlands
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20
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Voigt V, Forbes CA, Tonkin JN, Degli-Esposti MA, Smith HRC, Yokoyama WM, Scalzo AA. Murine cytomegalovirus m157 mutation and variation leads to immune evasion of natural killer cells. Proc Natl Acad Sci U S A 2003; 100:13483-8. [PMID: 14597723 PMCID: PMC263840 DOI: 10.1073/pnas.2233572100] [Citation(s) in RCA: 160] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2003] [Indexed: 11/18/2022] Open
Abstract
Effective natural killer (NK) cell recognition of murine cytomegalovirus (MCMV)-infected cells depends on binding of the Ly49H NK cell activation receptor to the m157 viral glycoprotein. Here we addressed the immunological consequences of variation in m157 sequence and function. We found that most strains of MCMV possess forms of m157 that evade Ly49H-dependent NK cell activation. Importantly, repeated passage of MCMV through resistant Ly49H+ mice resulted in the rapid emergence of m157 mutants that elude Ly49H-dependent NK cell responses. These data provide the first molecular evidence that NK cells can exert sufficient immunological pressure on a DNA virus, such that it undergoes rapid and specific mutation in an NK cell ligand enabling it to evade efficient NK cell surveillance.
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Affiliation(s)
- Valentina Voigt
- Immunology and Virology Program, Centre for Opthalmology and Visual Science, University of Western Australia, Nedlands, WA 6009, Australia
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21
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Croker BA, Handman E, Hayball JD, Baldwin TM, Voigt V, Cluse LA, Yang FC, Williams DA, Roberts AW. Rac2-deficient mice display perturbed T-cell distribution and chemotaxis, but only minor abnormalities in T(H)1 responses. Immunol Cell Biol 2002; 80:231-40. [PMID: 12067410 DOI: 10.1046/j.1440-1711.2002.01077.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.2] [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: 11/20/2022]
Abstract
The haematopoietic-specific RhoGTPase, Rac2, has been indirectly implicated in T-lymphocyte development and function, and as a pivotal regulator of T Helper 1 (T(H)1) responses. In other haematopoietic cells it regulates cytoskeletal rearrangement downstream of extracellular signals. Here we demonstrate that Rac2 deficiency results in an abnormal distribution of T lymphocytes in vivo and defects in T-lymphocyte migration and filamentous actin generation in response to chemoattractants in vitro. To investigate the requirement for Rac2 in IFN-gamma production and TH1 responses in vivo, Rac2-deficient mice were challenged with Leishmania major and immunized with ovalbumin-expressing cytomegalovirus. Despite a minor skewing towards a T(H)2 phenotype, Rac2-deficient mice displayed no increased susceptibility to L. major infection. Cytotoxic T-lymphocyte responses to cytomegalovirus and ovalbumin were also normal. Although Rac2 is required for normal T-lymphocyte migration, its role in the generation of T(H)1 responses to infection in vivo is largely redundant.
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Affiliation(s)
- Ben A Croker
- Divisions of Cancer, Walter and Eliza Hall Institute of Medical Research, Royal Melbourne Hospital, Parkville, Victoria, South Australia
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22
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Kleppisch T, Voigt V, Allmann R, Offermanns S. G(alpha)q-deficient mice lack metabotropic glutamate receptor-dependent long-term depression but show normal long-term potentiation in the hippocampal CA1 region. J Neurosci 2001; 21:4943-8. [PMID: 11438569 PMCID: PMC6762865] [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: 02/20/2023] Open
Abstract
Long-term potentiation (LTP) and depression (LTD) are potential cellular mechanisms involved in learning and memory. Group I metabotropic glutamate receptors (mGluR), which are linked to heterotrimeric G-proteins of the G(q) family (G(q) and G(11)), have been reported to facilitate both hippocampal LTP and LTD. To evaluate their functional role in synaptic plasticity, we studied LTD and LTP in the CA1 region of the hippocampus from wild-type, Galpha(q)(-/-), and Galpha(11)(-/-) mice. Basic parameters of the synaptic transmission were not altered in Galpha(q)(-/-) and Galpha(11)(-/-) mice. Moreover, these mice showed normal LTP in response to a strong tetanus and to a weak tetanus. However, LTD induced either by a group I mGluRs agonist or by paired-pulse low-frequency stimulation (PP-LFS) was absent in Galpha(q)(-/-) mice. Moreover, PP-LFS caused potentiation of the synaptic transmission in these mice that was not affected by the NMDAR antagonist AP-5. These results show that G(q) plays a crucial role in the mGluR-dependent LTD, whereas hippocampal LTP is not affected by the lack of a single member of the G(q) family.
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Affiliation(s)
- T Kleppisch
- Institut für Pharmakologie und Toxikologie, Technische Universität München, 80802 München, Germany.
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Abstract
Both cGMP-dependent and -independent mechanisms have been implicated in the regulation of vascular tone by NO. We analyzed acetylcholine (ACh)- and NO-induced relaxation in pressurized small arteries and aortic rings from wild-type (wt) and cGMP kinase I-deficient (cGKI(-/-)) mice. Low concentrations of NO and ACh decreased the spontaneous myogenic tone in wt but not in cGKI(-/-) arteries. However, contractions of cGKI(-/-) arteries and aortic rings were reduced by high concentrations (10 micromol/L) of 2-(N:, N-diethylamino)-diazenolate-2-oxide (DEA-NO). Iberiotoxin, a specific blocker of Ca(2+)-activated K(+) (BK(Ca)) channels, only partially prevented the relaxation induced by DEA-NO or ACh in pressurized vessels and aortic rings. DEA-NO increased the activity of BK(Ca) channels only in vascular smooth muscle cells isolated from wt cGKI(+/+) mice. These results suggest that low physiological concentrations of NO decrease vascular tone through activation of cGKI, whereas high concentrations of DEA-NO relax vascular smooth muscle independent of cGKI and BK(Ca). NO-stimulated, cGKI-independent relaxation was antagonized by the inhibition of soluble guanylyl cyclase or cAMP kinase (cAK). DEA-NO increased cGMP to levels that are sufficient to activate cAK. cAMP-dependent relaxation was unperturbed in cGKI(-/-) vessels. In conclusion, low concentrations of NO relax vessels by activation of cGKI, whereas in the absence of cGKI, NO can relax small and large vessels by cGMP-dependent activation of cAK.
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Affiliation(s)
- M Sausbier
- Institut für Pharmakologie und Toxikologie der TU München, München, Germany
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Abstract
Recombinant 26 kDa capsid (CA) proteins of bovine lentiviruses, bovine immunodeficiency virus (BIV) and Jembrana disease virus (JDV), were expressed in Escherichia coli and utilised as antigens for an enzyme-linked immunosorbent assay (ELISA) and a western immunoblot (WIB) procedure for the detection of antibody in dairy cattle in Western Australia. A total of 690 serum samples, 30 from each of 23 farms, were tested by ELISA with a JDV CA protein antigen, and antibody was detected in 3.8% (p<0.05) of the sera. Nine sera from each farm were also tested by WIB with JDV CA protein antigens and antibody was detected in 15.9% of these samples. All ELISA-positive results were also WIB-positive, and all sera antibody-positive by WIB with JDV CA protein antigens were also antibody-positive by the WIB using recombinant BIV CA antigens. This study showed that recombinant protein antigens can be used for serological tests to detect bovine lentivirus infection in Australia.
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Affiliation(s)
- E J Burkala
- Division of Veterinary and Biomedical Studies, Murdoch University, WA, Australia.
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Buonavoglia C, Tempesta M, Cavalli A, Voigt V, Buonavoglia D, Conserva A, Corrente M. Reactivation of caprine herpesvirus 1 in latently infected goats. Comp Immunol Microbiol Infect Dis 1996; 19:275-81. [PMID: 8894377 DOI: 10.1016/0147-9571(96)00014-8] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.9] [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: 02/02/2023]
Abstract
The authors report CapHV.1 reactivation in two latently infected adult goats treated with dexamethasone (DMS) (4.40 mg/kg BW) for 6 days. Virus was reisolated from vaginal swabs from the 3rd to the 12th day post-treatment with DMS and from nasal swabs for 2 days (6th and 7th day post-treatment). The animals also showed an increase of neutralizing antibody (SN) titer to CapHV.1 3 weeks after the end of treatment with DMS.
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Affiliation(s)
- C Buonavoglia
- Istituto di Malattie Infettive e Parassitarie Degli Animali, Facoltà di Medicina Veterinaria, Valenzano (BA), Italy
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Buonavoglia C, Cavalli A, Gravino E, Voigt V, Buonavoglia D, de Caprariis D. Intranasal vaccination of pups with maternally derived antibodies with a modified live canine parvovirus. Zentralbl Veterinarmed B 1994; 41:3-8. [PMID: 7941844 DOI: 10.1111/j.1439-0450.1994.tb00199.x] [Citation(s) in RCA: 8] [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: 01/28/2023]
Abstract
The modified live canine parvovirus (CPV) vaccine was used to vaccinate intranasally twenty-five pups with maternal antibody. The vaccine was able to overcome the interference of maternal immunity in rates of 100%, 72.7% and 17.6% in pups with haemagglutination inhibition antibody titre of 40, 80 and 160 respectively.
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Affiliation(s)
- C Buonavoglia
- Istituto di Malattie Infettive e Parassitarie degli Animali, Facoltà di Medicina Veterinaria, Università Bari, Italia
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