Vaccination with the T Cell Antigen Mtb 8.4 Protects Against Challenge with Mycobacterium tuberculosis
| Autor: | Pamela J. Ovendale, Steven G. Reed, JoAnne L. Flynn, Rhea N. Coler, Natalya V. Serbina, Fiona H. Day, Mark R. Alderson, Liqing Zhu, Antonio Campos-Neto, Steven P. Fling |
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| Rok vydání: | 2001 |
| Předmět: |
DNA
Bacterial Injections Subcutaneous T cell Immunology Epitopes T-Lymphocyte chemical and pharmacologic phenomena Lymphocyte Activation Epitope Microbiology Mycobacterium tuberculosis Interferon-gamma Mice Bacterial Proteins Antigen T-Lymphocyte Subsets MHC class I Vaccines DNA medicine Animals Tuberculosis Immunology and Allergy Cells Cultured Antigens Bacterial Vaccines Synthetic Attenuated vaccine biology Macrophages Th1 Cells Cytotoxicity Tests Immunologic biology.organism_classification Antibodies Bacterial Mycobacterium bovis Virology Mice Inbred C57BL medicine.anatomical_structure Immunoglobulin G BCG Vaccine biology.protein CD8 T-Lymphocytes Cytotoxic Mycobacterium |
| Zdroj: | The Journal of Immunology. 166:6227-6235 |
| ISSN: | 1550-6606 0022-1767 |
| DOI: | 10.4049/jimmunol.166.10.6227 |
| Popis: | The development of an effective vaccine against Mycobacterium tuberculosis is a research area of intense interest. Mounting evidence suggests that protective immunity to M. tuberculosis relies on both MHC class II-restricted CD4+ T cells and MHC class I-restricted CD8+ T cells. By purifying polypeptides present in the culture filtrate of M. tuberculosis and evaluating these molecules for their ability to stimulate PBMC from purified protein derivative-positive healthy individuals, we previously identified a low-m.w. immunoreactive T cell Ag, Mtb 8.4, which elicited strong Th1 T cell responses in healthy purified protein derivative-positive human PBMC and in mice immunized with recombinant Mtb 8.4. Herein we report that Mtb 8.4-specific T cells can be detected in mice immunized with the current live attenuated vaccine, Mycobacterium bovis-bacillus Calmette-Guérin as well as in mice infected i.v. with M. tuberculosis. More importantly, immunization of mice with either plasmid DNA encoding Mtb 8.4 or Mtb 8.4 recombinant protein formulated with IFA elicited strong CD4+ T cell and CD8+ CTL responses and induced protection on challenge with virulent M. tuberculosis. Thus, these results suggest that Mtb 8.4 is a potential candidate for inclusion in a subunit vaccine against TB. |
| Databáze: | OpenAIRE |
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