Influence of the mouse Bcg, Tbc-1 and xid genes on resistance and immune responses to tuberculosis infection and efficacy of bacille Calmette-Guérin (BCG) vaccination

We have studied the role of three mouse distinct non-H-2 genes (Bcg, Tbc-1, xid) in several phenomena of antituberculosis immunity and resistance. On the basis of median survival time (MST) of mice following infection with virulent Mycobacterium tuberculosis H37Rv, Bcg gene did not control resistanc...

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Published in:Clinical and experimental immunology 1996-04, Vol.104 (1), p.37-43
Main Authors: NIKONENKO, B. V, APT, A. S, MEZHLUMOVA, M. B, AVDIENKO, V. G, YEREMEEV, V. V, MOROZ, A. M
Format: Article
Language:English
Subjects:
Animals
BCG Vaccine - immunology
Genetic Linkage
Hypersensitivity, Delayed
Immunologic Deficiency Syndromes - genetics
Lymphocyte Activation
Mice
Mice, Inbred BALB C
Mice, Inbred CBA
Mice, Mutant Strains
Mycobacterium bovis - immunology
Mycobacterium tuberculosis
Original
Tuberculosis - immunology
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Summary:We have studied the role of three mouse distinct non-H-2 genes (Bcg, Tbc-1, xid) in several phenomena of antituberculosis immunity and resistance. On the basis of median survival time (MST) of mice following infection with virulent Mycobacterium tuberculosis H37Rv, Bcg gene did not control resistance to the lethal dose of H37Rv infection in non-vaccinated and Myco. bovis (BCG)-vaccinated mice. However, Bcgr allele, in comparison with Bcgs allele, determined more effective suppression of an early multiplication in spleens of H37Rv mycobacteria after a low dose (5x10(4) colony-forming units (CFU)) injection. CBA/N mice, which are not protected efficiently against tuberculous challenge by BCG vaccination, were characterized by a decreased in vitro proliferation of immune lymph node cells, both spontaneous and stimulated with mycobacterial antigens. The decreased proliferation was due to immunosuppression caused by interactions between responding T cells and CBA/N antigen-presenting cells (APC). We have confirmed that the defective response to BCG-vaccination in CBA/N mice is linked with the X-chromosome and thus is presumably determined by the xid gene itself. I/St mice (Tbc-1s), supersusceptible to H37Rv infection, were not able to restrict the growth of H37Rv mycobacteria in spleens, even following infection with a low dose (5x10(4)), but restricted the growth of Myco.bovis BCG more effectively than Bcgs mice.
ISSN:0009-9104
1365-2249
DOI:10.1046/j.1365-2249.1996.d01-643.x