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Studies with IL-10-/- mice: an overview

D M Rennick1, M M Fort, N J Davidson

  • 1DNAX Research Institute of Molecular and Cellular Biology Inc., Palo Alto, California 94304-1104, USA.

Journal of Leukocyte Biology
|April 1, 1997
PubMed
Summary

Interleukin 10-deficient mice develop chronic enterocolitis due to Th1 cell activation. Blocking interleukin-12 or interferon-gamma prevents this disease, highlighting their roles in immune regulation.

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Area of Science:

  • Immunology
  • Gastroenterology
  • T cell differentiation

Background:

  • Interleukin 10 (IL-10) plays a crucial role in immune homeostasis.
  • Dysregulation of IL-10 leads to inflammatory conditions like enterocolitis.
  • CD4+ T cells are key mediators in gastrointestinal immune responses.

Purpose of the Study:

  • To elucidate the mechanism of chronic enterocolitis in IL-10 deficient mice.
  • To investigate the role of T helper 1 (Th1) cells in this disease model.
  • To evaluate the therapeutic potential of blocking key cytokines.

Main Methods:

  • Induction of enterocolitis in IL-10-/- mice.
  • Adoptive transfer of IL-10-/- CD4+ T cells to RAG-2-/- mice.
  • Treatment with anti-IL-12 and anti-IFN-gamma monoclonal antibodies.
  • In vitro cytokine production analysis.

Main Results:

  • IL-10-/- mice spontaneously develop chronic enterocolitis mediated by CD4+ T cells.
  • These CD4+ T cells exhibit a Th1 phenotype, producing interferon-gamma (IFN-gamma).
  • Treatment with anti-IL-12 or anti-IFN-gamma antibodies prevented enterocolitis.
  • IL-12 and IFN-gamma were found to drive Th1 cell differentiation.

Conclusions:

  • Uncontrolled IL-12 and IFN-gamma production drives Th1 cell-mediated immunopathology in IL-10-/- mice.
  • IL-10 is essential for preventing excessive immune responses and maintaining gut homeostasis.
  • Targeting IL-12 and IFN-gamma pathways offers a potential therapeutic strategy for enterocolitis.

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