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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1983 Feb;80(3):830–834. doi: 10.1073/pnas.80.3.830

Anti-idiotypic antibodies to anti-HLA receptors induced by pregnancy

N Suciu-Foca *, E Reed *, C Rohowsky *, P Kung *,, D W King *
PMCID: PMC393474  PMID: 6600840

Abstract

We have previously shown that lymphoblasts alloactivated in vitro acquire the capacity of stimulating the autologous mixed lymphocyte response. This response is anti-idiotypic in nature because lymphocytes so primed display accelerated memory responses only when restimulated by autologous lymphoblasts that have been alloactivated against the same HLA-DR antigen. Based on this observation we have postulated that the absence of HLA antibodies in alloimmunized human subjects may be due to the development of autoantibodies that react with the anti-HLA receptors expressed by primed lymphocytes or by anti-HLA antibodies or both. This hypothesis has been confirmed in the present investigations which show that sera from parous women react with autologous T lymphoblasts primed in 5-day mixed lymphocyte culture against their husband—i.e., with lymphoblasts expressing receptors for the immunizing donor. Anti-HLA receptors expressed by T and B lymphocytes seem to share serologic determinants because sera that bind to autologous alloactivated lymphoblasts are also capable of inhibiting the anti-HLA activity of autologous and homologous sera. Auto-anti-idiotypic antibodies inhibit the autologous mixed lymphocyte response to autologous alloactivated lymphoblasts, a phenomenon whose in vivo correlate may reside in autoinhibition of anti-HLA antibody formation and of allograft immunity. Because auto-anti-idiotypic antibodies were found in sera from all parous women tested, the hypothesis that nonresponsiveness to alloantigens exists as a state per se is not likely. The passive transfer of antireceptor (idiotype) immunity by use of antibodies from pregnant women's sera may provide a powerful tool for specific suppression of allograft rejection.

Keywords: T-cell receptors, allogeneic reactivity

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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