Key Points from the Article: The Major Murine Systemic Lupus Erythematosus Susceptibility Locus, Sle1

Overview

• Title: The major murine systemic lupus erythematosus susceptibility locus, Sle1, is a cluster of functionally related genes.
• Authors: L Morel et al.
• Published in: Proceedings of the National Academy of Sciences USA, February 13, 2001.
• DOI: 10.1073/pnas.98.4.1787
• PMID: 11172029

Abstract Summary

• Sle1 Locus: A major susceptibility locus for murine systemic lupus erythematosus (SLE), syntenic to human SLE susceptibility regions.
• Congenic Analyses Findings:
  • Sle1 triggers loss of tolerance to chromatin, crucial for disease induction.
  • The locus can be influenced by modifier loci to suppress disease onset.
• Fine Mapping Analysis:
  • Identified three independent loci: Sle1a, Sle1b, Sle1c.
  • Each locus affects tolerance to chromatin distinctly.
  • T cells are more affected by Sle1a and B cells by Sle1b.
• Epistatic Interactions:
  • Suggests an additional locus, Sle1d, contributing to severe nephritis.
  • Sle1 encompasses four susceptibility genes impacting the autoimmune phenotype.
• Genetic Complexity:
  • Reflects a broader trait of polymorphisms in linked gene clusters with similar functions.

Figures

• Figure 1: Genetic map showing Sle1a, Sle1b, and Sle1c loci, with specific microsatellite markers.
• Figure 2: Displays serological characteristics and IgG antibody production of Sle1 loci.
• Figure 3: Nephrogenicity associated with Sle1 on an NZW hemizygous background.

Similar Articles

• Studies on genetic interactions in murine lupus and the role of T cell help in loss of tolerance.
• Investigations into sex bias in tolerance loss and immune activation due to Sle1b.

Cited Research

• Discusses miRNA-mediated control of B cell responses in immunity and SLE.
• Investigates estrogen receptor alpha signaling's role in Sle1-induced immune cell activation.

References

1. Systemic Lupus Erythematosus. Edited by Lahita R G, 1992.
2. Current Opinion in Immunology by Wakeland E K et al., 1999.
3. Immunity research by Morel L et al., 1994.
4. Proceedings of the National Academy of Sciences by Kono D H et al., 1994.

Additional Resources

• Full text sources available through Atypon, Europe PubMed Central, and PubMed Central.
• Medical resources linked through MedlinePlus Health Information.
• Molecular biology databases include Mouse Genome Informatics (MGI).