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Singh B, Wasita B, Reviono R. Cytokines dynamics in a wistar rat model infected with Mycobacterium Tuberculosis strain H37Rv. Int J Mycobacteriol 2022; 11:299-302. [DOI: 10.4103/ijmy.ijmy_84_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Larsen SE, Reese VA, Pecor T, Berube BJ, Cooper SK, Brewer G, Ordway D, Henao-Tamayo M, Podell BK, Baldwin SL, Coler RN. Subunit vaccine protects against a clinical isolate of Mycobacterium avium in wild type and immunocompromised mouse models. Sci Rep 2021; 11:9040. [PMID: 33907221 PMCID: PMC8079704 DOI: 10.1038/s41598-021-88291-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 04/05/2021] [Indexed: 01/19/2023] Open
Abstract
The nontuberculous mycobacteria (NTM) Mycobacterium avium is a clinically significant pathogen that can cause a wide range of maladies, including tuberculosis-like pulmonary disease. An immunocompromised host status, either genetically or acutely acquired, presents a large risk for progressive NTM infections. Due to this quietly emerging health threat, we evaluated the ability of a recombinant fusion protein ID91 combined with GLA-SE [glucopyranosyl lipid adjuvant, a toll like receptor 4 agonist formulated in an oil-in-water stable nano-emulsion] to confer protection in both C57BL/6 (wild type) and Beige (immunocompromised) mouse models. We optimized an aerosol challenge model using a clinical NTM isolate: M. avium 2-151 smt, observed bacterial growth kinetics, colony morphology, drug sensitivity and histopathology, characterized the influx of pulmonary immune cells, and confirmed the immunogenicity of ID91 in both mouse models. To determine prophylactic vaccine efficacy against this M. avium isolate, mice were immunized with either ID91 + GLA-SE or bacillus Calmette-Guérin (BCG). Immunocompromised Beige mice displayed a delayed influx of innate and adaptive immune cells resulting in a sustained and increased bacterial burden in the lungs and spleen compared to C57BL/6 mice. Importantly, both ID91 + GLA-SE and BCG vaccines significantly reduced pulmonary bacterial burden in both mouse strains. This work is a proof-of-concept study of subunit vaccine-induced protection against NTM.
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Affiliation(s)
- Sasha E. Larsen
- grid.240741.40000 0000 9026 4165Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA USA
| | - Valerie A. Reese
- grid.240741.40000 0000 9026 4165Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA USA
| | - Tiffany Pecor
- grid.240741.40000 0000 9026 4165Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA USA
| | - Bryan J. Berube
- grid.240741.40000 0000 9026 4165Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA USA
| | - Sarah K. Cooper
- grid.47894.360000 0004 1936 8083Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO USA
| | - Guy Brewer
- Alternative Behavior Strategies Inc, Salt Lake City, UT USA
| | - Diane Ordway
- grid.47894.360000 0004 1936 8083Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO USA
| | - Marcela Henao-Tamayo
- grid.47894.360000 0004 1936 8083Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO USA
| | - Brendan K. Podell
- grid.47894.360000 0004 1936 8083Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO USA
| | - Susan L. Baldwin
- grid.240741.40000 0000 9026 4165Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA USA
| | - Rhea N. Coler
- grid.240741.40000 0000 9026 4165Center for Global Infectious Disease Research, Seattle Children’s Research Institute, Seattle, WA USA
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Martin E, Kamath AT, Briscoe H, Britton WJ. The combination of plasmid interleukin-12 with a single DNA vaccine is more effective than Mycobacterium bovis (bacille Calmette-Guèrin) in protecting against systemic Mycobacterim avium infection. Immunology 2003; 109:308-14. [PMID: 12757627 PMCID: PMC1782959 DOI: 10.1046/j.1365-2567.2003.01660.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Sub-unit vaccines utilizing purified mycobacterial proteins or DNA vaccines induce partial protection against mycobacterial infections. For example, immunization with DNA vaccines expressing the gene for the immunodominant 35000 MW protein, common to Mycobacterium avium and Mycobacterium leprae but absent from the Mycobacterium tuberculosis complex, conferred significant protection against infection with either virulent M. avium or M. leprae in mice. However, the level of protection was equivalent to that obtained with the viable, attenuated vaccine, Mycobacterium bovis, bacille Calmette-Guèrin (BCG). The cytokine, interleukin (IL)-12, is essential for priming naïve CD4+ T lymphocytes to differentiate into interferon-gamma (IFN-gamma)-secreting T cells. We have used a novel self-splicing vector expressing both chains of murine IL-12 to determine if plasmid IL-12 would increase the efficacy of a vaccine expressing the M. avium 35000 MW protein (DNA-Av35). Co-immunization with p2AIL-12 and DNA-Av35 led to a significant increase in the number of antigen-specific IFN-gamma secreting cells and total amount of IFN-gamma released, but a concomitant fall in the antibody response to the 35000 MW protein. This pattern of response was associated with enhanced clearance of M. avium from the liver and spleen of coimmunized mice, and was significantly more effective than BCG or DNA-Av35. alone. Following M. avium challenge there was significant increase in the expansion of the 35000 MW antigen-reactive T cells in the coimmunized mice. Therefore, plasmid-delivered IL-12 acts as an effective adjuvant to increase the protective efficacy of a single DNA vaccine against M. avium infection above that achieved by BCG, and this strategy may improve the efficacy of subunit vaccines against M. leprae and M. tuberculosis.
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Affiliation(s)
- Ela Martin
- Centenary Institute of Cancer Medicine and Cell Biology, Newtown, NSW, Australia
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Lounis N, Truffot-Pernot C, Veziris N, Jarlier V. Apport des modèles expérimentaux dans le traitement curatif de la tuberculose. Med Mal Infect 2003. [DOI: 10.1016/s0399-077x(03)00066-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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