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  • Title: Syngeneic anti-idiotypic antisera to murine anti-HLA class II monoclonal antibodies.
    Author: Perosa F, Ferrone S.
    Journal: J Immunol; 1987 Aug 15; 139(4):1232-9. PubMed ID: 3611788.
    Abstract:
    BALB/c mice have been immunized with six anti-HLA Class II monoclonal antibodies (MoAb); the latter included MoAb CR11-462, Q5/6, and Q5/13 to monomorphic determinants, the anti-HLA-DR1,4,w6,w8,w9 MoAb AC1.59, the anti-HLA-DRw9 MoAb AB7ae9, and the anti-HLA-DQw3 MoAb AC6G. The six monoclonal antibodies markedly differ in their ability to induce anti-idiotypic antibodies, because the latter were not detected in the sera from the mice immunized with the MoAb AB7ae9 and with the MoAb AC6G. The MoAb AC1.59 and CR11-462 elicited antibodies to private idiotypes, and the MoAb Q5/6 and Q5/13 elicited antibodies to private and public idiotypes. The titer of the latter in the anti-MoAb Q5/6 antiserum appears to be markedly lower than that of the former ones; no marked difference was detected in the titer of the two types of antibodies in the anti-MoAb Q5/13 antiserum. Blocking experiments with a panel of monoclonal antibodies showed that the MoAb Q5/13 shares idiotypes with the anti-HLA Class I MoAb Q5/6, 127, and 441 and with the anti-HLA Class I MoAb CR11-351, Q1/28, Q6/64, and 6/31, but does not share idiotypes with any of the nine anti-human melanoma-associated antigen MoAb tested. The spectrotypes of the anti-MoAb CR11-462 and anti-MoAb Q5/13 antisera comprise two major components in the pH 6.2 to 6.7 range, that of the anti-MoAb Q5/6 antiserum comprises two major components in the pH 6.5 to 6.8 range, and that of the anti-MoAb AC1.59 antiserum comprises a number of components in the pH 5.6 to 7.2 range.
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