FLUORESCEIN-LABELED ESTRADIOL - PROBE FOR ANTI-ESTRADIOL ANTIBODY

  • 1 January 1977
    • journal article
    • research article
    • Vol. 18  (1) , 147-156
Abstract
A fluorescent estradiol derivative binds strongly to anti-estradiol antibody. [Bovine serum albumin was used to induce the antibody.] The binding, measured by fluorescence polarization, is inhibited by estradiol and by diethylstilbestrol. Tentatively characterized as N-(estradiol-6-iminooxyacetyl) fluorescein amine, the derivative was prepared from estradiol-6-iminooxyacetic acid, dicyclohexylcarbodiimide, and fluorescein amine, and isolated by TLC. It has a fluorescence emission similar to that of fluorescein and an absorption spectrum consistent with a fluorescein: estradiol molar ratio of 1:1.