Parenteral immunization of mice with a genetically inactivated pertussis toxin DNA vaccine induces cell-mediated immunity and protection
Article
Article Title | Parenteral immunization of mice with a genetically inactivated pertussis toxin DNA vaccine induces cell-mediated immunity and protection |
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ERA Journal ID | 15126 |
Article Category | Article |
Authors | Fry, Scott R. (Author), Chen, Austen Y. (Author), Daggard, Grant (Author) and Mukkur, Trilochan K. S. (Author) |
Journal Title | Journal of Medical Microbiology |
Journal Citation | 57 (1), pp. 28-35 |
Number of Pages | 8 |
Year | 2008 |
Place of Publication | United Kingdom |
ISSN | 0022-2615 |
1473-5644 | |
Digital Object Identifier (DOI) | https://doi.org/10.1099/jmm.0.47527-0 |
Web Address (URL) | https://www.microbiologyresearch.org/content/journal/jmm/10.1099/jmm.0.47527-0 |
Abstract | The immunogenicity and protective efficacy of a DNA vaccine encoding a genetically inactivated S1 domain of pertussis toxin was evaluated using a murine respiratory challenge model of Bordetella pertussis infection. It was found that mice immunized via the intramuscular route elicited a purely cell-mediated immune response to the DNA vaccine, with high levels of gamma interferon (IFN-c) and interleukin (IL)-2 detected in the S1-stimulated splenocyte supernatants and no serum IgG. Despite the lack of an antibody response, the lungs of DNA-immunized mice were cleared of B. pertussis at a significantly faster rate compared with mock-immunized mice following an aerosol challenge. To gauge the true potential of this S1 DNA vaccine, the immune response and protective efficacy of the commercial diphtheria–tetanus–acellular pertussis (DTaP) vaccine were included as the gold standard. Immunization with DTaP elicited a typically strong T-helper (Th)2-polarized immune response with significantly higher titres of serum IgG than in the DNA vaccine group, but a relatively weak Th1 response with low levels of IFN-c and IL-2 detected in the supernatants of antigen-stimulated splenocytes. DTaP-immunized mice cleared the aerosol challenge more efficiently than DNA-immunized mice, with no detectable pathogen after day 7 post-challenge. |
Keywords | DNA vaccine; immunization; diptheria pertussis tetanus vaccine; cllular immunity; whooping cough |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 320402. Applied immunology (incl. antibody engineering, xenotransplantation and t-cell therapies) |
320701. Medical bacteriology | |
320603. Medical molecular engineering of nucleic acids and proteins | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Department of Biological and Physical Sciences |
https://research.usq.edu.au/item/9zwvx/parenteral-immunization-of-mice-with-a-genetically-inactivated-pertussis-toxin-dna-vaccine-induces-cell-mediated-immunity-and-protection
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