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. 1988 Apr;63(4):579–584.

Human and murine antibodies to rye grass pollen allergen LolpIV share a common idiotope.

R Bose 1, A K Ekramoddoullah 1, F T Kisil 1, A H Sehon 1
PMCID: PMC1454784  PMID: 2452788

Abstract

The possibility that a murine monoclonal antibody (mAb 12) to Rye grass pollen allergen LolpIV and LolpIV-specific antibodies in the sera of grass allergic individuals share a common idiotope (Id) was investigated. It was first established that mAb 12 and human IgE antibodies recognized the same (or similar) epitope(s) on LolpIV; i.e. mAb 12 could inhibit, to the extent of 35-60%, the binding of 125I-LolpIV to the human IgE antibodies present in the sera of grass pollen-allergic individuals. Subsequently, a rabbit anti-Id antiserum was produced against mAb 12 and rendered Id-specific by appropriate immune absorptions, and its IgG antibody fraction was isolated (Rb-aId). The specificity of Rb-aId was demonstrated by the fact that the antibodies bound only to mAb 12 and not to any other murine monoclonal antibody tested. Observations that Rb-aId inhibited the binding of 125I-LolpIV to mAb 12 indicated that the Id determinants recognized on mAb 12 were located at or near the antibody-combining sites. The Rb-aId also bound specifically to affinity-purified human anti-LolpIV antibodies isolated from human sera, but not to affinity-purified human anti-tetanus toxoid antibodies. This indicated that the human anti-LolpIV antibodies share a cross-reactive Id. The binding of Rb-aId to human anti-LolpIV antibody could also be inhibited by mAb 12. Therefore, it was concluded that the murine and human antibodies to LolpIV share a cross-reactive idiotope.

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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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