Immune cell signaling defects in lupus: activation, anergy and death

GC Tsokos, SNC Liossis - Immunology today, 1999 - cell.com
Immunology today, 1999cell.com
Recent studies have identified novel aberrations in antigen receptor-mediated signaling
events in lymphocytes from patients with systemic lupus erythematosus. Here, we propose
that in lupus lymphocytes, the receptor-mediated increase in protein tyrosine
phosphorylation and cytoplasmic free Ca 2+ responses, along with T-cell receptor ζ chain
deficiency, might explain the previously described diverse and conflicting immunoregulatory
defects in human lupus.
Abstract
Recent studies have identified novel aberrations in antigen receptor-mediated signaling events in lymphocytes from patients with systemic lupus erythematosus. Here, we propose that in lupus lymphocytes, the receptor-mediated increase in protein tyrosine phosphorylation and cytoplasmic free Ca2+ responses, along with T-cell receptor ζ chain deficiency, might explain the previously described diverse and conflicting immunoregulatory defects in human lupus.
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