Aberrant signaling in the TNFα/TNF receptor 1 pathway of the NZM2410 lupus-prone mouse

Kim R.M. Blenman, Frances R. Bahjat, Lyle L. Moldawer, Laurence Morel

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


The purpose of this study was to evaluate the ability to induce TNFα-dependent apoptosis in vivo in predisease lupus-prone NZM2410 and derived B6.NZM congenic mouse strains. An endotoxicosis model that utilizes LPS and D-galactosamine to induce mortality by TNFα/TNFR1-dependent hepatocyte apoptosis was used to assess TNFα production, apoptotic signaling, and effects on the production of IL-6 and IL-10. NZM2410 was found to be resistant to endotoxicosis and to produce significantly less TNFα-induced IL-6 and IL-10. At low doses of LPS, partial resistance was associated with the Tnfaw allele. At higher doses of LPS, partial resistance cosegregated with lupus-susceptibility loci and functionally mapped downstream of caspase 3. Additional partial resistance in NZM2410 was also found upstream of FADD. These results demonstrate the existence of multiple defects in the TNFα/TNFR1 signaling pathway in the NZM2410 mouse and their relevance to lupus pathogenesis is discussed.

Original languageEnglish (US)
Pages (from-to)124-133
Number of pages10
JournalClinical Immunology
Issue number2
StatePublished - Feb 2004
Externally publishedYes


  • (p55) TNF receptor 1
  • AST
  • Apoptosis
  • B6
  • C57BL/6J
  • Cytokine
  • Endotoxic shock
  • FADD
  • FAS-associated death domain
  • Lupus
  • QTL
  • Quantitative trait loci
  • Recombinant human TNFα
  • RhTNFα
  • Rodent
  • SLE
  • Systemic lupus erythematosus
  • TNFR1

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology


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