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Related Experiment Videos

IL-10 regulates murine lupus.

Zhinan Yin1, Gul Bahtiyar, Na Zhang

  • 1Section of Rheumatology, Department of Medicine, Yale School of Medicine, New Haven, CT 06520, USA.

Journal of Immunology (Baltimore, Md. : 1950)
|August 8, 2002
PubMed
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Interleukin-10 (IL-10) deficiency exacerbates lupus in MRL-Fas(lpr) mice, increasing disease severity and mortality. IL-10 plays a protective role by inhibiting pro-inflammatory responses in this murine lupus model.

Area of Science:

  • Immunology
  • Autoimmune Diseases
  • Genetics

Background:

  • Murine lupus models, such as MRL/MpJ-Tnfrsf6(lpr) mice, closely mimic human systemic lupus erythematosus (SLE).
  • The role of interleukin-10 (IL-10) in regulating autoimmune disease pathogenesis requires further elucidation.

Purpose of the Study:

  • To investigate the regulatory role of IL-10 in the development and progression of murine lupus.
  • To determine the impact of IL-10 gene deficiency on the phenotype of MRL-Fas(lpr) mice.

Main Methods:

  • Generation of IL-10 gene-deficient (IL-10(-/-)) MRL-Fas(lpr) mice.
  • Comparison of disease phenotypes, including skin lesions, lymphadenopathy, glomerulonephritis, mortality, cytokine production (IFN-gamma), and autoantibody levels (IgG2a anti-dsDNA), between IL-10(-/-), IL-10(+/-), and IL-10(+/+) littermates.

Related Experiment Videos

  • Administration of recombinant IL-10 (rIL-10) to wild-type MRL-Fas(lpr) mice to assess its therapeutic effect.

    • Main Results:

    • IL-10(-/-) MRL-Fas(lpr) mice exhibited accelerated and more severe lupus phenotypes compared to IL-10-intact controls.
    • Increased severity was associated with enhanced IFN-gamma production by CD4(+) and CD8(+) T cells and higher IgG2a anti-dsDNA autoantibody levels.
    • rIL-10 administration reduced IgG2a anti-dsDNA autoantibody production in wild-type MRL-Fas(lpr) mice, confirming IL-10's protective effect.

    Conclusions:

    • IL-10 acts as a crucial down-modulator of murine lupus, primarily by inhibiting pathogenic T helper 1 (Th1) cytokine responses.
    • Modulating IL-10 levels holds potential therapeutic value for managing human lupus erythematosus.