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Scientific article
English

Protection of murine lupus by the Ead transgene is MHC haplotype-dependent

Published inThe Journal of immunology, vol. 164, no. 1, p. 505-511
Publication date2000
Abstract

A high-level expression of a transgene, Ead, encoding the I-Ed alpha-chain is very effective in protection against murine lupus. To investigate the specific contribution of select H-2 haplotypes on the Ead transgene-mediated disease-suppressing effect, we generated H-2 congenic (NZB x BXSB)F1 hybrid mice bearing either H-2b/b, H-2d/b, or H-2d/d haplotype, and compared the transgene-mediated protective effect on the clinical development (autoantibody production and glomerulonephritis) of lupus in these F1 hybrids. The level of protection was most remarkable in mice bearing the I-E- H-2b/b haplotype but was only minimal in I-E+ H-2d/d F1 hybrids. Additional analysis demonstrated a marked suppression of lupus in I-E+ H-2k/k (MRL x BXSB)F1 hybrid mice, indicating that the transgene is able to suppress autoimmune responses even in mice already expressing I-E molecules at a homozygous level. Our results indicate that the level of the transgene-mediated protection is dependent on the host H-2 haplotype. This suggests that the autoimmune suppressive activity of the Ead transgene is likely to be determined through the interaction of the transgene product with the host MHC class II molecules, providing new insight into the role of MHC in lupus-like autoimmunity.

Keywords
  • Animals
  • Crosses, Genetic
  • Female
  • Genes, MHC Class II/ immunology
  • H-2 Antigens/ genetics/immunology
  • Haplotypes
  • Histocompatibility Antigens Class II/ genetics/immunology
  • Lupus Erythematosus, Systemic/etiology/ genetics/ immunology
  • Male
  • Mice
  • Mice, Inbred MRL lpr
  • Mice, Inbred NZB
  • Mice, Transgenic
  • Transgenes/ immunology
Affiliation Not a UNIGE publication
Citation (ISO format)
IBNOU-ZEKRI, Nabila et al. Protection of murine lupus by the Ead transgene is MHC haplotype-dependent. In: The Journal of immunology, 2000, vol. 164, n° 1, p. 505–511. doi: 10.4049/jimmunol.164.1.505
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ISSN of the journal0022-1767
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