Both tumor necrosis factor receptor signaling pathways contribute to mortality but not to splenomegaly in generalized lymphoproliferative disorder

The phenotypical consequences of a combined deficiency of the Fas-Fas Ligand (FasL) and one or both Tumor Necrosis Factor (TNF) signaling pathways were investigated. Mice, which expressed a non-functional FasL suffered from a pathological accumulation of both B and T cells leading to splenomegaly and lymphadenopathy and, depending on the genetic background, pathogenic self-reactive antibodies (generalized lymphoproliferative disorder (gld)-phenotype). If mice additionally lacked TNF, they displayed a significantly ameliorated gld-phenotype while TNF Receptor-1-deficient gld mice (B6.gld.TNFR1−/−) displayed a more severe phenotype. To complement this combination, we also generated TNF Receptor-2-deficient gld mice (B6.gld.TNFR2−/−). Both double knockouts followed in their splenic structure the respective TNFR contribution to the phenotype. TNFR1−/− mice showed an absence of B cell follicles in the spleen while TNFR2−/− mice were comparable to WT mice. In general, we demonstrated a strong contribution of both TNFR signaling pathways to the symptoms of gld with the notable exception of splenomegaly where only TNFR1−/− played a role.

• Publication year

  2014

• Venue

  Antibodies

• Publication date

  2014-12-24

• Fields of study

  Biology, Medicine

• Identifiers
  DOI 10.3390/ANTIB4010001
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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