A subset of lupus anti-DNA antibodies cross-reacts with the NR2 glutamate receptor in systemic lupus erythematosus.
Nat Med
; 7(11): 1189-93, 2001 Nov.
Article
em En
| MEDLINE
| ID: mdl-11689882
ABSTRACT
In systemic lupus erythematosus, antibodies against double-stranded DNA are a major contributor to renal disease. We have previously demonstrated that the pentapeptide Asp/Glu-Trp-Asp/Glu-Tyr-Ser/Gly is a molecular mimic of double-stranded DNA. This sequence is also present in the extracellular domain of murine and human NMDA (N-methyl-D-aspartate) receptor subunits NR2a and NR2b. Here we show that the NR2 receptor is recognized by both murine and human anti-DNA antibodies. Moreover, anti-DNA antibodies with this cross-reactivity mediate apoptotic death of neurons in vivo and in vitro. Finally, we show that the cerebrospinal fluid of a patient with systemic lupus erythematosus contains these antibodies and also mediates neuronal death via an apoptotic pathway. These observations indicate that lupus antibodies cross-react with DNA and NMDA receptors, gain access to cerebrospinal fluid and may mediate non-thrombotic and non-vasculitic abnormalities of the central nervous system.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Anticorpos Antinucleares
/
Receptores de N-Metil-D-Aspartato
/
Lúpus Eritematoso Sistêmico
Limite:
Animals
/
Humans
/
Male
Idioma:
En
Ano de publicação:
2001
Tipo de documento:
Article