Decreased sensitivity to tumour-necrosis factor but normal T-cell development in TNF receptor-2-deficient mice

SL Erickson, FJ De Sauvage, K Kikly, K Carver-Moore… - Nature, 1994 - nature.com
SL Erickson, FJ De Sauvage, K Kikly, K Carver-Moore, S Pitts-Meek, N Gillett, KCF Sheehan
Nature, 1994nature.com
TUMOUR necrosis factor (TNF) elicits multiple biological effects through two distinct cell
surface receptors, TNF-R1 (p55) and TNF-R2 (p75). Most TNF-mediated biological
responses, such as cell death, gene induction, antiviral activity and cytokine production,
have been attributed to TNF-R1 (refs 1–5). Gene targeting of this receptor confirms its role in
the lethality attributable to low doses of lipopolysaccharide after sensitization with D-
galactosamine6, 7; surprisingly, the toxicity of high doses of lipopolysaccharide was …
Abstract
TUMOUR necrosis factor (TNF) elicits multiple biological effects through two distinct cell surface receptors, TNF-R1 (p55) and TNF-R2 (p75). Most TNF-mediated biological responses, such as cell death, gene induction, antiviral activity and cytokine production, have been attributed to TNF-R1 (refs 1–5). Gene targeting of this receptor confirms its role in the lethality attributable to low doses of lipopolysaccharide after sensitization with D-galactosamine6,7; surprisingly, the toxicity of high doses of lipopolysaccharide was unaffected. The function of TNF-R2 is less well understood, although there are data supporting a role in T-cell development and the proliferation of cytotoxic T lymphocytes8,9. To clarify the physiological role of TNF-R2, we have generated mice deficient in this receptor by gene targeting. The TNF-R2−/− mice show normal T-cell development and activity, but we find that they have increased resistance to TNF-induced death. Additionally, such mice injected subcutaneously with TNF show a dramatic decrease in tissue necrosis, indicating that this receptor plays a role in the necrotic effects of TNF.
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