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T cell response to Mycobacterium tuberculosis

I M Orme1, P Andersen, W H Boom

  • 1Dept. of Microbiology, Colorado State University, Fort Collins 80523.

The Journal of Infectious Diseases
|June 1, 1993
PubMed
Summary
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The acquired immune response to Mycobacterium tuberculosis involves T cells and cytokines that direct macrophages to fight infection. Secreted M. tuberculosis proteins may be key antigens for developing immunity.

Area of Science:

  • Immunology
  • Microbiology
  • Infectious Diseases

Background:

  • T cell-mediated immunity is crucial for controlling Mycobacterium tuberculosis infection in humans and mice.
  • This immune response involves various T cell subsets and functions like protection, delayed-type hypersensitivity, and memory immunity.
  • Cytokines secreted by T cells guide monocyte/macrophage cells to combat the bacteria.

Purpose of the Study:

  • To review the evolution of understanding T cell-mediated immunity against Mycobacterium tuberculosis.
  • To examine the role of secreted or export proteins of M. tuberculosis as key protective antigens.

Main Methods:

  • Review of clinical observations and human studies.
  • Analysis of experimental research using animal models, particularly mice.

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  • Examination of emerging hypotheses regarding M. tuberculosis antigens.

    • Main Results:

    • The complex T cell response includes protection, delayed-type hypersensitivity, and memory immunity.
    • Cytokine signaling directs macrophages to contain and destroy Mycobacterium tuberculosis.
    • Evidence suggests M. tuberculosis secreted proteins are critical for initiating acquired resistance.

    Conclusions:

    • Understanding the T cell-mediated immune response is vital for combating tuberculosis.
    • Secreted M. tuberculosis proteins represent a promising area for vaccine development.
    • Further research into these antigens could lead to novel strategies for tuberculosis prevention and treatment.