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Pfeuffer S, Rolfes L, Wirth T, Steffen F, Pawlitzki M, Schulte-Mecklenbeck A, Gross CC, Brand M, Bittner S, Ruck T, Klotz L, Wiendl H, Meuth SG. Immunoadsorption versus double-dose methylprednisolone in refractory multiple sclerosis relapses. J Neuroinflammation 2022; 19:220. [PMID: 36071461 PMCID: PMC9450381 DOI: 10.1186/s12974-022-02583-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/23/2022] [Indexed: 12/03/2022] Open
Abstract
Objective Intravenous methylprednisolone is the standard treatment for a multiple sclerosis relapse; however, this fails to improve symptoms in up to one quarter of patients. Immunoadsorption is an accepted treatment for refractory relapses, but prospective comparator-controlled studies are missing. Methods In this observational study, patients with steroid-refractory acute multiple sclerosis relapses receiving either six courses of tryptophan-immunoadsorption or double-dose methylprednisolone therapy were analysed. Outcomes were evaluated at discharge and three months later. Immune profiling of blood lymphocytes and proteomic analysis were performed by multi-parameter flow cytometry and Olink analysis, respectively (NCT04450030). Results 42 patients were enrolled (methylprednisolone: 26 patients; immunoadsorption: 16 patients). For determination of the primary outcome, treatment response was stratified according to relative function system score changes (“full/best” vs. “average” vs. “worse/none”). Upon discharge, the adjusted odds ratio for any treatment response (“full/best” + ”average” vs. “worse/none”) was 10.697 favouring immunoadsorption (p = 0.005 compared to methylprednisolone). At follow-up, the adjusted odds ratio for the best treatment response (“full/best” vs. “average” + ”worse/none”) was 103.236 favouring IA patients (p = 0.001 compared to methylprednisolone). Similar results were observed regarding evoked potentials and quality of life outcomes, as well as serum neurofilament light-chain levels. Flow cytometry revealed a profound reduction of B cell subsets following immunoadsorption, which was closely correlated to clinical outcomes, whereas methylprednisolone had a minimal effect on B cell populations. Immunoadsorption treatment skewed the blood cytokine network, reduced levels of B cell-related cytokines and reduced immunoglobulin levels as well as levels of certain coagulation factors. Interpretation Immunoadsorption demonstrated favourable outcomes compared to double-dose methylprednisolone. Outcome differences were significant at discharge and follow-up. Further analyses identified modulation of B cell function as a potential mechanism of action for immunoadsorption, as reduction of B cell subsets correlated with clinical improvement. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-022-02583-y.
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Affiliation(s)
- Steffen Pfeuffer
- Department of Neurology and Institute of Translational Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149, Muenster, Germany
| | - Leoni Rolfes
- Department of Neurology and Institute of Translational Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149, Muenster, Germany.,Department of Neurology, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Timo Wirth
- Department of Neurology and Institute of Translational Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149, Muenster, Germany
| | - Falk Steffen
- Department of Neurology, University Hospital Mainz, Mainz, Germany
| | - Marc Pawlitzki
- Department of Neurology and Institute of Translational Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149, Muenster, Germany.,Department of Neurology, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Andreas Schulte-Mecklenbeck
- Department of Neurology and Institute of Translational Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149, Muenster, Germany
| | - Catharina C Gross
- Department of Neurology and Institute of Translational Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149, Muenster, Germany
| | - Marcus Brand
- Medical Department D - Nephrology, University Hospital Muenster, Muenster, Germany
| | - Stefan Bittner
- Department of Neurology, University Hospital Mainz, Mainz, Germany
| | - Tobias Ruck
- Department of Neurology and Institute of Translational Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149, Muenster, Germany.,Department of Neurology, University Hospital Duesseldorf, Duesseldorf, Germany
| | - Luisa Klotz
- Department of Neurology and Institute of Translational Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149, Muenster, Germany
| | - Heinz Wiendl
- Department of Neurology and Institute of Translational Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149, Muenster, Germany.
| | - Sven G Meuth
- Department of Neurology and Institute of Translational Neurology, University Hospital Muenster, Albert-Schweitzer-Campus 1, 48149, Muenster, Germany. .,Department of Neurology, University Hospital Duesseldorf, Duesseldorf, Germany.
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Abdolmohammadi Khiav L, Zahmatkesh A. Major pathogenic Clostridia in human and progress toward the clostridial vaccines. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2022; 25:1059-1068. [PMID: 36246067 PMCID: PMC9526890 DOI: 10.22038/ijbms.2022.65518.14417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 07/20/2022] [Indexed: 12/02/2022]
Abstract
The Clostridium genus is composed of a large spectrum of heterogeneous bacteria. They are Gram-positive, mostly mesophilic, and anaerobic spore-forming strains. Clostridia are widely distributed in oxygen-free habitats. They are found principally in the soil and intestines of ruminants as normal flora, but also are the cause of several infections in humans. The infections produced by important species in humans include botulism, tetanus, pseudomembranous colitis, antibiotics-associated diarrhea, and gas gangrene. Immunization with toxoid or bacterin-toxoid or genetically modified or other vaccines is a protective way against clostridial infection. Several experimental or commercial vaccines have been developed worldwide. Although conventional vaccines including toxoid vaccines are very important, the new generation of vaccines is an effective alternative to conventional vaccines. Recent advances have made it possible for new vaccines to increase immunogenicity. This review discusses briefly the important species of clostridia in humans, their toxins structure, and vaccine development and usage throughout the world.
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Affiliation(s)
- Lida Abdolmohammadi Khiav
- Department of Anaerobic Vaccine Research and Production, Specialized Clostridia Research Laboratory, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization, Karaj, Iran,Corresponding author: Lida Abdolmohammadi Khiav. Department of Anaerobic Vaccine Research and Production, Specialized Clostridia Research Laboratory, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization, Karaj, Iran. Tel: +98-2634570038; Fax: +98-2634552194;
| | - Azadeh Zahmatkesh
- Department of Anaerobic Vaccine Research and Production, Specialized Clostridia Research Laboratory, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization, Karaj, Iran
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Immunosuppression in Rheumatologic and Auto-immune Disease. Handb Exp Pharmacol 2021; 272:181-208. [PMID: 34734308 DOI: 10.1007/164_2021_551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Many rheumatologic diseases are thought to originate in dysregulation of the immune system; lupus nephritis, for example, involves humoral immunity, while autoinflammatory diseases such as familial Mediterranean fever are caused by defects in innate immunity. Of note, this dysregulation may involve both upregulation of immune system components and aspects of immunodeficiency. Treatment of rheumatologic diseases thus requires a familiarity with a variety of immunosuppressive medications and their effects on immune system function.In many rheumatologic conditions, due to an incompletely elucidated mechanism of disease, immunosuppression is relatively broad in contrast to agents used, for example, in treatment of transplant rejection. Multiple immunosuppressive drugs may also be used in succession or in combination. As such, an understanding of the mechanisms and targets of immunosuppressive drugs is essential to appreciating their utility and potential adverse effects. Because of the overlap between therapies used in rheumatologic as well as other inflammatory disorders, some of these medications are discussed in other disease processes (e.g., Immunosuppression for inflammatory bowel disease) or in greater detail in other chapters of this textbook (corticosteroids, mTOR inhibitors, antiproliferative agents).
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Koonpaew S, Kaewborisuth C, Srisutthisamphan K, Wanitchang A, Thaweerattanasinp T, Saenboonrueng J, Poonsuk S, Jengarn J, Viriyakitkosol R, Kramyu J, Jongkaewwattana A. A Single-Cycle Influenza A Virus-Based SARS-CoV-2 Vaccine Elicits Potent Immune Responses in a Mouse Model. Vaccines (Basel) 2021; 9:vaccines9080850. [PMID: 34451975 PMCID: PMC8402467 DOI: 10.3390/vaccines9080850] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/24/2021] [Accepted: 07/30/2021] [Indexed: 01/14/2023] Open
Abstract
The use of virus-vectored platforms has increasingly gained attention in vaccine development as a means for delivering antigenic genes of interest into target hosts. Here, we describe a single-cycle influenza virus-based SARS-CoV-2 vaccine designated as scPR8-RBD-M2. The vaccine utilizes the chimeric gene encoding 2A peptide-based bicistronic protein cassette of the SARS-CoV-2 receptor-binding domain (RBD) and influenza matrix 2 (M2) protein. The C-terminus of the RBD was designed to link with the cytoplasmic domain of the influenza virus hemagglutinin (HA) to anchor the RBD on the surface of producing cells and virus envelope. The chimeric RBD-M2 gene was incorporated in place of the HA open-reading frame (ORF) between the 3′ and 5′ UTR of HA gene for the virus rescue in MDCK cells stably expressing HA. The virus was also constructed with the disrupted M2 ORF in segment seven to ensure that M2 from the RBD-M2 was utilized. The chimeric gene was intact and strongly expressed in infected cells upon several passages, suggesting that the antigen was stably maintained in the vaccine candidate. Mice inoculated with scPR8-RBD-M2 via two alternative prime-boost regimens (intranasal-intranasal or intranasal-intramuscular routes) elicited robust mucosal and systemic humoral immune responses and cell-mediated immunity. Notably, we demonstrated that immunized mouse sera exhibited neutralizing activity against pseudotyped viruses bearing SARS-CoV-2 spikes from various variants, albeit with varying potency. Our study warrants further development of a replication-deficient influenza virus as a promising SARS-CoV-2 vaccine candidate.
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Affiliation(s)
- Surapong Koonpaew
- Virology and Cell Technology Research Team, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand; (S.K.); (C.K.); (K.S.); (A.W.); (T.T.); (J.S.); (S.P.); (J.J.); (J.K.)
| | - Challika Kaewborisuth
- Virology and Cell Technology Research Team, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand; (S.K.); (C.K.); (K.S.); (A.W.); (T.T.); (J.S.); (S.P.); (J.J.); (J.K.)
| | - Kanjana Srisutthisamphan
- Virology and Cell Technology Research Team, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand; (S.K.); (C.K.); (K.S.); (A.W.); (T.T.); (J.S.); (S.P.); (J.J.); (J.K.)
| | - Asawin Wanitchang
- Virology and Cell Technology Research Team, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand; (S.K.); (C.K.); (K.S.); (A.W.); (T.T.); (J.S.); (S.P.); (J.J.); (J.K.)
| | - Theeradej Thaweerattanasinp
- Virology and Cell Technology Research Team, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand; (S.K.); (C.K.); (K.S.); (A.W.); (T.T.); (J.S.); (S.P.); (J.J.); (J.K.)
| | - Janya Saenboonrueng
- Virology and Cell Technology Research Team, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand; (S.K.); (C.K.); (K.S.); (A.W.); (T.T.); (J.S.); (S.P.); (J.J.); (J.K.)
| | - Sukontip Poonsuk
- Virology and Cell Technology Research Team, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand; (S.K.); (C.K.); (K.S.); (A.W.); (T.T.); (J.S.); (S.P.); (J.J.); (J.K.)
| | - Juggragarn Jengarn
- Virology and Cell Technology Research Team, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand; (S.K.); (C.K.); (K.S.); (A.W.); (T.T.); (J.S.); (S.P.); (J.J.); (J.K.)
| | | | - Jarin Kramyu
- Virology and Cell Technology Research Team, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand; (S.K.); (C.K.); (K.S.); (A.W.); (T.T.); (J.S.); (S.P.); (J.J.); (J.K.)
| | - Anan Jongkaewwattana
- Virology and Cell Technology Research Team, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Pathumthani 12120, Thailand; (S.K.); (C.K.); (K.S.); (A.W.); (T.T.); (J.S.); (S.P.); (J.J.); (J.K.)
- Correspondence:
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5
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Lee DSW, Rojas OL, Gommerman JL. B cell depletion therapies in autoimmune disease: advances and mechanistic insights. Nat Rev Drug Discov 2021; 20:179-199. [PMID: 33324003 PMCID: PMC7737718 DOI: 10.1038/s41573-020-00092-2] [Citation(s) in RCA: 278] [Impact Index Per Article: 92.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/26/2020] [Indexed: 01/30/2023]
Abstract
In the past 15 years, B cells have been rediscovered to be not merely bystanders but rather active participants in autoimmune aetiology. This has been fuelled in part by the clinical success of B cell depletion therapies (BCDTs). Originally conceived as a method of eliminating cancerous B cells, BCDTs such as those targeting CD20, CD19 and BAFF are now used to treat autoimmune diseases, including systemic lupus erythematosus and multiple sclerosis. The use of BCDTs in autoimmune disease has led to some surprises. For example, although antibody-secreting plasma cells are thought to have a negative pathogenic role in autoimmune disease, BCDT, even when it controls the disease, has limited impact on these cells and on antibody levels. In this Review, we update our understanding of B cell biology, review the results of clinical trials using BCDT in autoimmune indications, discuss hypotheses for the mechanism of action of BCDT and speculate on evolving strategies for targeting B cells beyond depletion.
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Affiliation(s)
- Dennis S. W. Lee
- grid.17063.330000 0001 2157 2938Department of Immunology, University of Toronto, Toronto, ON Canada
| | - Olga L. Rojas
- grid.17063.330000 0001 2157 2938Department of Immunology, University of Toronto, Toronto, ON Canada
| | - Jennifer L. Gommerman
- grid.17063.330000 0001 2157 2938Department of Immunology, University of Toronto, Toronto, ON Canada
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Loes AN, Gentles LE, Greaney AJ, Crawford KHD, Bloom JD. Attenuated Influenza Virions Expressing the SARS-CoV-2 Receptor-Binding Domain Induce Neutralizing Antibodies in Mice. Viruses 2020; 12:E987. [PMID: 32899480 PMCID: PMC7552029 DOI: 10.3390/v12090987] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 08/28/2020] [Accepted: 09/03/2020] [Indexed: 12/20/2022] Open
Abstract
An effective vaccine is essential for controlling the spread of the SARS-CoV-2 virus. Here, we describe an influenza virus-based vaccine for SARS-CoV-2. We incorporated a membrane-anchored form of the SARS-CoV-2 spike receptor binding domain (RBD) in place of the neuraminidase (NA) coding sequence in an influenza virus also possessing a mutation that reduces the affinity of hemagglutinin for its sialic acid receptor. The resulting ΔNA(RBD)-Flu virus can be generated by reverse genetics and grown to high titers in cell culture. A single-dose intranasal inoculation of mice with ΔNA(RBD)-Flu elicits serum neutralizing antibody titers against SAR-CoV-2 comparable to those observed in humans following natural infection (~1:200). Furthermore, ΔNA(RBD)-Flu itself causes no apparent disease in mice. It might be possible to produce a vaccine similar to ΔNA(RBD)-Flu at scale by leveraging existing platforms for the production of influenza vaccines.
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Affiliation(s)
- Andrea N. Loes
- Division of Basic Sciences and Computational Biology Program, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; (A.N.L.); (L.E.G.); (A.J.G.); (K.H.D.C.)
- Howard Hughes Medical Institute, Seattle, WA 98103, USA
| | - Lauren E. Gentles
- Division of Basic Sciences and Computational Biology Program, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; (A.N.L.); (L.E.G.); (A.J.G.); (K.H.D.C.)
- Department of Microbiology, University of Washington, Seattle, WA 98195-7735, USA
| | - Allison J. Greaney
- Division of Basic Sciences and Computational Biology Program, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; (A.N.L.); (L.E.G.); (A.J.G.); (K.H.D.C.)
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
- Medical Scientist Training Program, University of Washington, Seattle, WA 98195, USA
| | - Katharine H. D. Crawford
- Division of Basic Sciences and Computational Biology Program, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; (A.N.L.); (L.E.G.); (A.J.G.); (K.H.D.C.)
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
- Medical Scientist Training Program, University of Washington, Seattle, WA 98195, USA
| | - Jesse D. Bloom
- Division of Basic Sciences and Computational Biology Program, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA; (A.N.L.); (L.E.G.); (A.J.G.); (K.H.D.C.)
- Howard Hughes Medical Institute, Seattle, WA 98103, USA
- Department of Microbiology, University of Washington, Seattle, WA 98195-7735, USA
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
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Loes AN, Gentles LE, Greaney AJ, Crawford KHD, Bloom JD. Attenuated influenza virions expressing the SARS-CoV-2 receptor-binding domain induce neutralizing antibodies in mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2020:2020.08.12.248823. [PMID: 32817935 PMCID: PMC7430565 DOI: 10.1101/2020.08.12.248823] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
An effective vaccine is essential to controlling the spread of SARS-CoV-2 virus. Here, we describe an influenza-virus-based vaccine for SARS-CoV-2. We incorporated a membrane-anchored form of the SARS-CoV-2 Spike receptor binding domain (RBD) in place of the neuraminidase (NA) coding sequence in an influenza virus also possessing a mutation that reduces the affinity of hemagglutinin for its sialic acid receptor. The resulting ΔNA(RBD)-Flu virus can be generated by reverse genetics and grown to high titers in cell culture. A single-dose intranasal inoculation of mice with ΔNA(RBD)-Flu elicits serum neutralizing antibody titers against SAR-CoV-2 comparable to those observed in humans following natural infection (~1:200). Furthermore, ΔNA(RBD)-Flu itself causes no apparent disease in mice. It might be possible to produce a vaccine similar to ΔNA(RBD)-Flu at scale by leveraging existing platforms for production of influenza vaccines.
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Affiliation(s)
- Andrea N. Loes
- Division of Basic Sciences and Computational Biology Program, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
- Howard Hughes Medical Institute, Seattle, WA 98103, USA
| | - Lauren E. Gentles
- Division of Basic Sciences and Computational Biology Program, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
- Department of Microbiology, University of Washington, Seattle, WA 98195-7735, USA
| | - Allison J. Greaney
- Division of Basic Sciences and Computational Biology Program, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
- Medical Scientist Training Program, University of Washington, Seattle, WA 98195, USA
| | - Katharine H. D. Crawford
- Division of Basic Sciences and Computational Biology Program, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
- Medical Scientist Training Program, University of Washington, Seattle, WA 98195, USA
| | - Jesse D. Bloom
- Division of Basic Sciences and Computational Biology Program, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
- Howard Hughes Medical Institute, Seattle, WA 98103, USA
- Department of Microbiology, University of Washington, Seattle, WA 98195-7735, USA
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
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Nichols JM, Kummari E, Sherman J, Yang EJ, Dhital S, Gilfeather C, Yray G, Morgan T, Kaplan BLF. CBD Suppression of EAE Is Correlated with Early Inhibition of Splenic IFN-γ + CD8+ T Cells and Modest Inhibition of Neuroinflammation. J Neuroimmune Pharmacol 2020; 16:346-362. [PMID: 32440886 DOI: 10.1007/s11481-020-09917-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 04/03/2020] [Indexed: 01/08/2023]
Abstract
In this study cannabidiol (CBD) was administered orally to determine its effects and mechanisms in the experimental autoimmune encephalomyelitis (EAE) model of multiple sclerosis (MS). We hypothesized that 75 mg/kg of oral CBD given for 5 days after initiation of disease would reduce EAE severity through suppression of either the early peripheral immune or late neuroimmune response. EAE was induced in C57BL/6 mice at two different magnitudes, and peripheral inflammatory and neuroinflammatory responses were measured at days 3, 10, and 18. Th1, Th17, Tc1, Tc17, Tregs, and myeloid derived suppressor cells (MDSC) were identified from the lymph nodes and spleens of each mouse to determine if CBD altered the suppressor cell or inflammatory cell populations in secondary lymphoid tissues. Additionally, neuroinflammation was identified in brain and spinal cord tissues using various immunohistochemical techniques and flow cytometry. Early treatment of EAE with oral CBD reduced clinical disease at the day 18 timepoint which correlated with a significant decrease in the percentage of MOG35-55 specific IFN-γ producing CD8+ T cells in the spleen at day 10. Analysis of both T cell infiltration and lesion size within the spinal cord also showed a moderate reduction in neuroinflammation within the central nervous system (CNS). These results provide evidence that oral CBD suppressed the peripheral immune response that precedes neuroinflammation; however, analysis of the neuroinflammatory endpoints also suggest that the modest reduction in neuroinflammation was only partially responsible for CBD's neuroprotective capability. Graphical Abstract CBD was administered orally for the first 5 days following initiation of EAE. CBD attenuated clinical disease, and we found that CBD suppressed IFN-γ producing CD8+ T cells in the spleen at day 10. There was also modest suppression of neuroinflammation. Together these data demonstrate that early, oral administration of CBD protected mice from disease, but the modest effects on neuroinflammation suggest other mechanisms participate in CBD's neuroprotective effect in EAE.
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Affiliation(s)
- James M Nichols
- Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, USA
| | - Evangel Kummari
- Center for Environmental Health Sciences, Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, USA
| | - Jessica Sherman
- Center for Environmental Health Sciences, Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, USA
| | - Eun-Ju Yang
- Center for Environmental Health Sciences, Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, USA
| | - Saphala Dhital
- Center for Environmental Health Sciences, Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, USA
| | - Christa Gilfeather
- Center for Environmental Health Sciences, Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, USA
| | - Gabriella Yray
- Center for Environmental Health Sciences, Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, USA
| | - Timothy Morgan
- Department of Pathobiology and Population Medicine, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, USA
| | - Barbara L F Kaplan
- Center for Environmental Health Sciences, Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, USA.
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Targeting immunometabolism as an anti-inflammatory strategy. Cell Res 2020; 30:300-314. [PMID: 32132672 PMCID: PMC7118080 DOI: 10.1038/s41422-020-0291-z] [Citation(s) in RCA: 266] [Impact Index Per Article: 66.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 02/02/2020] [Indexed: 12/14/2022] Open
Abstract
The growing field of immunometabolism has taught us how metabolic cellular reactions and processes not only provide a means to generate ATP and biosynthetic precursors, but are also a way of controlling immunity and inflammation. Metabolic reprogramming of immune cells is essential for both inflammatory as well as anti-inflammatory responses. Four anti-inflammatory therapies, DMF, Metformin, Methotrexate and Rapamycin all work by affecting metabolism and/or regulating or mimicking endogenous metabolites with anti-inflammatory effects. Evidence is emerging for the targeting of specific metabolic events as a strategy to limit inflammation in different contexts. Here we discuss these recent developments and speculate on the prospect of targeting immunometabolism in the effort to develop novel anti-inflammatory therapeutics. As accumulating evidence for roles of an intricate and elaborate network of metabolic processes, including lipid, amino acid and nucleotide metabolism provides key focal points for developing new therapies, we here turn our attention to glycolysis and the TCA cycle to provide examples of how metabolic intermediates and enzymes can provide potential novel therapeutic targets.
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10
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Van Kaer L, Postoak JL, Wang C, Yang G, Wu L. Innate, innate-like and adaptive lymphocytes in the pathogenesis of MS and EAE. Cell Mol Immunol 2019; 16:531-539. [PMID: 30874627 DOI: 10.1038/s41423-019-0221-5] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 02/22/2019] [Indexed: 12/11/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system (CNS) in which the immune system damages the protective insulation surrounding the nerve fibers that project from neurons. A hallmark of MS and its animal model, experimental autoimmune encephalomyelitis (EAE), is autoimmunity against proteins of the myelin sheath. Most studies in this field have focused on the roles of CD4+ T lymphocytes, which form part of the adaptive immune system as both mediators and regulators in disease pathogenesis. Consequently, the treatments for MS often target the inflammatory CD4+ T-cell responses. However, many other lymphocyte subsets contribute to the pathophysiology of MS and EAE, and these subsets include CD8+ T cells and B cells of the adaptive immune system, lymphocytes of the innate immune system such as natural killer cells, and subsets of innate-like T and B lymphocytes such as γδ T cells, natural killer T cells, and mucosal-associated invariant T cells. Several of these lymphocyte subsets can act as mediators of CNS inflammation, whereas others exhibit immunoregulatory functions in disease. Importantly, the efficacy of some MS treatments might be mediated in part by effects on lymphocytes other than CD4+ T cells. Here we review the contributions of distinct subsets of lymphocytes on the pathogenesis of MS and EAE, with an emphasis on lymphocytes other than CD4+ T cells. A better understanding of the distinct lymphocyte subsets that contribute to the pathophysiology of MS and its experimental models will inform the development of novel therapeutic approaches.
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Affiliation(s)
- Luc Van Kaer
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA.
| | - Joshua L Postoak
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA
| | - Chuan Wang
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA
| | - Guan Yang
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA
| | - Lan Wu
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA
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11
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Berkani N, Joly P, Golinski ML, Colliou N, Lim A, Larbi A, Riou G, Caillot F, Bernard P, Bedane C, Delaporte E, Chaby G, Dompmartin A, Hertl M, Calbo S, Musette P. B-cell depletion induces a shift in self antigen specific B-cell repertoire and cytokine pattern in patients with bullous pemphigoid. Sci Rep 2019; 9:3525. [PMID: 30837635 PMCID: PMC6401188 DOI: 10.1038/s41598-019-40203-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 02/04/2019] [Indexed: 11/08/2022] Open
Abstract
Bullous Pemphigoid is the most common auto-immune bullous skin disease. It is characterized by the production of auto-antibodies directed against 2 proteins of the hemi-desmosome (BP180 and BP230). We assessed the efficacy and mechanisms of action of rituximab, an anti-CD20 monoclonal antibody, in 17 patients with severe and relapsing type of bullous pemphigoid. The phenotype, cytokine gene expression, and rearrangement of BP180-specific B-cell receptor genes were performed over 2 years following treatment. At the end of the study, 5 patients had died, 3 had withdrawn from the study, and 9 patients were in complete remission. The one- and two-year relapse rates were 44.1% (95% Confidence Interval (CI): 21.0-76.0%) and 66.5%, (95% CI: 38.4-91.4%), respectively. Phenotypic analyses confirmed dramatic B-cell depletion, which lasted for 9 to 12 months. The ELISA values of serum anti-BP180 antibodies and the frequency of BP180-specific circulating B cells decreased dramatically following treatment, which paralleled the improvement of skin lesions. During B-cell reconstitution, a polyclonal IgM repertoire appeared and a shift in the rearrangement of the B-cell receptor genes of BP180-specific circulating B cells was observed. Concurrently, we observed a decrease of IL-15, IL-6 and TNFα expressing BP180-specific B cells, and the emergence of IL-10 and IL-1RA-expressing BP180-specific IgM+ B cells in patients in complete remission off therapy, suggesting the functional plasticity of BP180-specific auto-immune B cells after rituximab treatment.
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Affiliation(s)
| | - Pascal Joly
- Normandie University, UNIROUEN, INSERM U1234, Rouen, France
- Normandie University, UNIROUEN, Rouen University Hospital, Department of Dermatology, French reference center for autoimmune bullous diseases, F76000, Rouen, France
| | - Marie-Laure Golinski
- Normandie University, UNIROUEN, INSERM U1234, Rouen, France
- Normandie University, UNIROUEN, Rouen University Hospital, Department of Dermatology, French reference center for autoimmune bullous diseases, F76000, Rouen, France
| | | | - Annick Lim
- Immunoscope plateform, Pasteur Institute, Paris, France
| | - Anis Larbi
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Gaetan Riou
- Normandie University, UNIROUEN, INSERM U1234, Rouen, France
| | | | - Philippe Bernard
- Department of Dermatology, Reims University Hospital, Reims, France
| | - Christophe Bedane
- Department of Dermatology, Limoges University Hospital, Limoges, France
| | | | - Guillaume Chaby
- Department of Dermatology, Amiens University Hospital, Amiens, France
| | - Anne Dompmartin
- Department of Dermatology, Caen University Hospital, Caen, France
| | - Michael Hertl
- Department of Dermatology and Allergology, Philipps University, Marburg, Germany
| | | | - Philippe Musette
- Normandie University, UNIROUEN, Rouen University Hospital, Department of Dermatology, French reference center for autoimmune bullous diseases, F76000, Rouen, France.
- INSERM U976, Saint Louis Hospital, Paris, France.
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12
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B Cells Increase Myocardial Inflammation by Suppressing M2 Macrophage Polarization in Coxsackie Virus B3-Induced Acute Myocarditis. Inflammation 2019; 42:953-960. [DOI: 10.1007/s10753-018-0950-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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13
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Zheng Z, Diaz-Arévalo D, Guan H, Zeng M. Noninvasive vaccination against infectious diseases. Hum Vaccin Immunother 2018; 14:1717-1733. [PMID: 29624470 PMCID: PMC6067898 DOI: 10.1080/21645515.2018.1461296] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The development of a successful vaccine, which should elicit a combination of humoral and cellular responses to control or prevent infections, is the first step in protecting against infectious diseases. A vaccine may protect against bacterial, fungal, parasitic, or viral infections in animal models, but to be effective in humans there are some issues that should be considered, such as the adjuvant, the route of vaccination, and the antigen-carrier system. While almost all licensed vaccines are injected such that inoculation is by far the most commonly used method, injection has several potential disadvantages, including pain, cross contamination, needlestick injury, under- or overdosing, and increased cost. It is also problematic for patients from rural areas of developing countries, who must travel to a hospital for vaccine administration. Noninvasive immunizations, including oral, intranasal, and transcutaneous administration of vaccines, can reduce or eliminate pain, reduce the cost of vaccinations, and increase their safety. Several preclinical and clinical studies as well as experience with licensed vaccines have demonstrated that noninvasive vaccine immunization activates cellular and humoral immunity, which protect against pathogen infections. Here we review the development of noninvasive immunization with vaccines based on live attenuated virus, recombinant adenovirus, inactivated virus, viral subunits, virus-like particles, DNA, RNA, and antigen expression in rice in preclinical and clinical studies. We predict that noninvasive vaccine administration will be more widely applied in the clinic in the near future.
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Affiliation(s)
- Zhichao Zheng
- a Key Laboratory of Oral Medicine , Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University , Guangzhou , Guangdong , China.,b Center of Emphasis in Infectious Diseases , Department of Biomedical Sciences , Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso , El Paso , Texas , USA
| | - Diana Diaz-Arévalo
- c Grupo Funcional de Inmunología , Fundación Instituto de Inmunología de Colombia-FIDIC, Faculty of Agricultural Sciences, Universidad de Ciencias Aplicadas y Ambientales U.D.C.A, School of Medicine and Health Sciences, Universidad del Rosario , Bogotá , DC . Colombia
| | - Hongbing Guan
- a Key Laboratory of Oral Medicine , Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University , Guangzhou , Guangdong , China
| | - Mingtao Zeng
- a Key Laboratory of Oral Medicine , Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University , Guangzhou , Guangdong , China.,b Center of Emphasis in Infectious Diseases , Department of Biomedical Sciences , Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center El Paso , El Paso , Texas , USA
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14
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Touil H, Kobert A, Lebeurrier N, Rieger A, Saikali P, Lambert C, Fawaz L, Moore CS, Prat A, Gommerman J, Antel JP, Itoyama Y, Nakashima I, Bar-Or A. Human central nervous system astrocytes support survival and activation of B cells: implications for MS pathogenesis. J Neuroinflammation 2018; 15:114. [PMID: 29673365 PMCID: PMC5907187 DOI: 10.1186/s12974-018-1136-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 03/22/2018] [Indexed: 12/22/2022] Open
Abstract
Background The success of clinical trials of selective B cell depletion in patients with relapsing multiple sclerosis (MS) indicates B cells are important contributors to peripheral immune responses involved in the development of new relapses. Such B cell contribution to peripheral inflammation likely involves antibody-independent mechanisms. Of growing interest is the potential that B cells, within the MS central nervous system (CNS), may also contribute to the propagation of CNS-compartmentalized inflammation in progressive (non-relapsing) disease. B cells are known to persist in the inflamed MS CNS and are more recently described as concentrated in meningeal immune-cell aggregates, adjacent to the subpial cortical injury which has been associated with progressive disease. How B cells are fostered within the MS CNS and how they may contribute locally to the propagation of CNS-compartmentalized inflammation remain to be elucidated. Methods We considered whether activated human astrocytes might contribute to B cell survival and function through soluble factors. B cells from healthy controls (HC) and untreated MS patients were exposed to primary human astrocytes that were either maintained under basal culture conditions (non-activated) or pre-activated with standard inflammatory signals. B cell exposure to astrocytes included direct co-culture, co-culture in transwells, or exposure to astrocyte-conditioned medium. Following the different exposures, B cell survival and expression of T cell co-stimulatory molecules were assessed by flow cytometry, as was the ability of differentially exposed B cells to induce activation of allogeneic T cells. Results Secreted factors from both non-activated and activated human astrocytes robustly supported human B cell survival. Soluble products of pre-activated astrocytes also induced B cell upregulation of antigen-presenting cell machinery, and these B cells, in turn, were more efficient activators of T cells. Astrocyte-soluble factors could support survival and activation of B cell subsets implicated in MS, including memory B cells from patients with both relapsing and progressive forms of disease. Conclusions Our findings point to a potential mechanism whereby activated astrocytes in the inflamed MS CNS not only promote a B cell fostering environment, but also actively support the ability of B cells to contribute to the propagation of CNS-compartmentalized inflammation, now thought to play key roles in progressive disease. Electronic supplementary material The online version of this article (10.1186/s12974-018-1136-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hanane Touil
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, 3801 University Street, Room 111, Montréal , QC, H3A 2B3, Canada.,Department of Neurology and Center for NeuroInflammation and Experimental Therapeutics (CNET), Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Antonia Kobert
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, 3801 University Street, Room 111, Montréal , QC, H3A 2B3, Canada
| | - Nathalie Lebeurrier
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, 3801 University Street, Room 111, Montréal , QC, H3A 2B3, Canada
| | - Aja Rieger
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, 3801 University Street, Room 111, Montréal , QC, H3A 2B3, Canada
| | - Philippe Saikali
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, 3801 University Street, Room 111, Montréal , QC, H3A 2B3, Canada
| | - Caroline Lambert
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, 3801 University Street, Room 111, Montréal , QC, H3A 2B3, Canada
| | - Lama Fawaz
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, 3801 University Street, Room 111, Montréal , QC, H3A 2B3, Canada
| | - Craig S Moore
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, 3801 University Street, Room 111, Montréal , QC, H3A 2B3, Canada.,Division of BioMedical Sciences, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NF, Canada
| | - Alexandre Prat
- Université de Montréal Centre de Recherche du CHUM (CRCHUM) and Department of Neuroscience, Université de Montréal, 900 Saint Denis Street, Montreal, QC, H2X 0A9, Canada
| | - Jennifer Gommerman
- Department of Immunology, Medical Sciences Building, University of Toronto, Toronto, ON, M5S 1A8, Canada
| | - Jack P Antel
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, 3801 University Street, Room 111, Montréal , QC, H3A 2B3, Canada
| | - Yasuto Itoyama
- Department of Neurology, School of Medicine, Tohoku University, 1-1 Seiryo-machi, Aoba-ku, Sendai, Japan
| | - Ichiro Nakashima
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, 3801 University Street, Room 111, Montréal , QC, H3A 2B3, Canada.,Department of Neurology, School of Medicine, Tohoku University, 1-1 Seiryo-machi, Aoba-ku, Sendai, Japan
| | - Amit Bar-Or
- Neuroimmunology Unit, Montreal Neurological Institute, McGill University, 3801 University Street, Room 111, Montréal , QC, H3A 2B3, Canada. .,Department of Neurology and Center for NeuroInflammation and Experimental Therapeutics (CNET), Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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15
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Przedpelski A, Tepp WH, Zuverink M, Johnson EA, Pellet S, Barbieri JT. Enhancing toxin-based vaccines against botulism. Vaccine 2018; 36:827-832. [PMID: 29307477 DOI: 10.1016/j.vaccine.2017.12.064] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/19/2017] [Accepted: 12/20/2017] [Indexed: 01/25/2023]
Abstract
Botulinum neurotoxins (BoNT) are the most toxic proteins for humans. BoNTs are single chain proteins with an N-terminal light chain (LC) and a C-terminal heavy chain (HC). HC comprises a translocation domain (HCN) and a receptor binding domain (HCC). Currently, there are no approved vaccines against botulism. This study tests a recombinant, full-length BoNT/A1 versus LCHCN/A1 and HCC/A1 as vaccine candidates against botulism. Recombinant, full-length BoNT/A1 was detoxified by engineering 3-amino acid mutations (E224A/R363A/Y366F) (M-BoNT/A1) into the LC to eliminate catalytic activity, which reduced toxicity in a mouse model of botulism by >106-fold relative to native BoNT/A1. As a second step to improve vaccine safety, an additional mutation (W1266A) was engineered in the ganglioside binding pocket, resulting in reduced receptor binding, to produce M-BoNT/A1W. M-BoNT/A1W vaccination protected against challenge by 106 LD50 Units of native BoNT/A1, while M-BoNT/A1 or M-BoNT/A1W vaccination equally protected against challenge by native BoNT/A2, a BoNT subtype. Mice vaccinated with M-BoNT/A1W surviving BoNT challenge had dominant antibody responses to the LCHCN domain, but varied antibody responses to HCC. Sera from mice vaccinated with M-BoNT/A1W also neutralized BoNT/A1 action on cultured neuronal cells. The cell- and mouse-based assays measured different BoNT-neutralizing antibodies, where M-BoNT/A1W elicited a strong neutralizing response in both assays. Overall, M-BoNT/A1W, with defects in multiple toxin functions, elicits a potent immune response to BoNT/A challenge as a vaccine strategy against botulism and other toxin-mediated diseases.
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Affiliation(s)
- Amanda Przedpelski
- Medical College of Wisconsin, 8701 W Watertown Plank Rd., Microbiology and Immunology, Milwaukee, WI 53226, United States
| | - William H Tepp
- University of Wisconsin-Madison, 6303 Microbial Sciences Building, 1550 Linden Dr., Madison, WI 53706, United States
| | - Madison Zuverink
- Medical College of Wisconsin, 8701 W Watertown Plank Rd., Microbiology and Immunology, Milwaukee, WI 53226, United States
| | - Eric A Johnson
- University of Wisconsin-Madison, 6303 Microbial Sciences Building, 1550 Linden Dr., Madison, WI 53706, United States
| | - Sabine Pellet
- University of Wisconsin-Madison, 6303 Microbial Sciences Building, 1550 Linden Dr., Madison, WI 53706, United States
| | - Joseph T Barbieri
- Medical College of Wisconsin, 8701 W Watertown Plank Rd., Microbiology and Immunology, Milwaukee, WI 53226, United States.
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16
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Vaccines against Botulism. Toxins (Basel) 2017; 9:toxins9090268. [PMID: 28869493 PMCID: PMC5618201 DOI: 10.3390/toxins9090268] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 08/30/2017] [Accepted: 08/30/2017] [Indexed: 12/16/2022] Open
Abstract
Botulinum neurotoxins (BoNT) cause the flaccid paralysis of botulism by inhibiting the release of acetylcholine from motor neurons. There are seven serotypes of BoNT (A-G), with limited therapies, and no FDA approved vaccine for botulism. An investigational formalin-inactivated penta-serotype-BoNT/A-E toxoid vaccine was used to vaccinate people who are at high risk of contracting botulism. However, this formalin-inactivated penta-serotype-BoNT/A-E toxoid vaccine was losing potency and was discontinued. This article reviews the different vaccines being developed to replace the discontinued toxoid vaccine. These vaccines include DNA-based, viral vector-based, and recombinant protein-based vaccines. DNA-based vaccines include plasmids or viral vectors containing the gene encoding one of the BoNT heavy chain receptor binding domains (HC). Viral vectors reviewed are adenovirus, influenza virus, rabies virus, Semliki Forest virus, and Venezuelan Equine Encephalitis virus. Among the potential recombinant protein vaccines reviewed are HC, light chain-heavy chain translocation domain, and chemically or genetically inactivated holotoxin.
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17
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Kumar A, Singh S. Editorial: Influenza Virus Vaccines and Immunotherapies. Front Immunol 2015; 6:599. [PMID: 26635813 PMCID: PMC4657188 DOI: 10.3389/fimmu.2015.00599] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 11/09/2015] [Indexed: 12/13/2022] Open
Affiliation(s)
- Arun Kumar
- GlaxoSmithKline Vaccines, Research Center , Siena , Italy
| | - Shakti Singh
- Department of Surgery, University of Alberta , Edmonton, AB , Canada
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