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Effector CD8 T cell immunity in microsporidial infection: a lone defense mechanism

Magali M Moretto1, Danielle I Harrow, Imtiaz A Khan

  • 1Department of Microbiology, Immunology and Tropical Medicine, George Washington University, Washington, DC, 20037, USA, morettom@gwu.edu.

Seminars in Immunopathology
|April 11, 2015
PubMed

Insights

Microsporidia infections pose risks to immunocompromised individuals. This review explores CD8 T cell responses in the gut, crucial for immunity against these pathogens.

Area of Science:

  • Immunology
  • Infectious Diseases
  • Microbiology

Background:

  • Microsporidia are opportunistic pathogens, particularly dangerous for immunocompromised individuals like those with HIV.
  • Diagnostic challenges lead to underestimation of Microsporidia prevalence.
  • CD8 T cells are identified as key effector cells in host defense against Microsporidia infections.

Purpose of the Study:

  • To review the role of effector CD8 T cells in microsporidial infections.
  • To identify factors critical for protective immunity against Microsporidia.
  • To emphasize the importance of understanding CD8 T cell responses in the gut-associated lymphoid tissue (GALT).

Main Methods:

  • This is a review article, synthesizing existing research on Microsporidia and CD8 T cell immunology.
  • Focuses on data from mouse models of Microsporidia infection.
  • Analysis of immune responses within the gut compartment.

Main Results:

  • CD8 T cells are the primary defense against Microsporidia, especially in the gut.
  • A robust and polyfunctional CD8 T cell response is vital for host survival.
  • The gut-associated lymphoid tissue (GALT) is a critical site for generating these responses.

Conclusions:

  • Understanding CD8 T cell development in GALT is essential for combating Microsporidia.
  • Therapeutic strategies to restore CD8 T cell function in immunocompromised individuals are needed.
  • Further research is required to fully elucidate protective immunity against this pathogen.

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