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抗单克隆抗孕酮抗体的抗独特型血清:在兔和大鼠中的制备及特异性鉴定

Anti-idiotypic sera against monoclonal anti-progesterone antibodies: production in rabbits and rats and characterization of specificity.

作者信息

Taussig M J, Brown N, Ellis S, Holliman A, Peat D, Richardson N, Heap R B, Feinstein A

出版信息

Immunology. 1986 Jul;58(3):445-52.

Abstract

Antisera were raised in rabbits and rats against three mouse monoclonal anti-progesterone IgG1 antibodies. Anti-idiotypic antibodies were isolated from rabbit sera by successive passage over immunoadsorbent columns of normal mouse Ig and the specific immunizing monoclonal, with elution from the latter. Radioimmunoassays for anti-idiotype and free idiotype were established, enabling detection of idiotype in sera of mice immunized with progesterone-BSA conjugate. Binding of rabbit anti-idiotype to anti-progesterone monoclonals was partially inhibitable by free progesterone-hemisuccinate or progesterone-ovalbumin conjugate. While showing considerable specificity for their respective inducing monoclonals, the anti-idiotypes also cross-reacted in varying degrees with the other anti-progesterone monoclonals, demonstrating the presence of IdI and IdX determinants. The patterns of cross-reactivity showed some correlation with the relative isoelectric points and combining-site specificities of the anti-progesterones. The specificities of rat and rabbit anti-idiotypes were similar, but not identical.

摘要

用兔和大鼠制备了针对三种小鼠抗孕酮IgG1单克隆抗体的抗血清。通过在正常小鼠Ig和特异性免疫单克隆抗体的免疫吸附柱上连续传代,从兔血清中分离出抗独特型抗体,并从后者进行洗脱。建立了抗独特型和游离独特型的放射免疫测定法,能够检测用孕酮-BSA缀合物免疫的小鼠血清中的独特型。游离孕酮半琥珀酸酯或孕酮-卵清蛋白缀合物可部分抑制兔抗独特型与抗孕酮单克隆抗体的结合。虽然抗独特型抗体对各自诱导的单克隆抗体表现出相当高的特异性,但它们也与其他抗孕酮单克隆抗体有不同程度的交叉反应,表明存在IdI和IdX决定簇。交叉反应模式与抗孕酮抗体的相对等电点和结合位点特异性有一定相关性。大鼠和兔抗独特型抗体的特异性相似,但不完全相同。

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