Monoclonal antibodies that bind testosterone

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 16/26 (2006.01) A61K 39/395 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2300804

The present invention provides monoclonal antibodies and derivatives thereof suitable for use in immunodiagnostic assay of testosterone. In particular, such reagents are disclosed having affinity for testosterone of at least about 109 M-1 and exhibiting less than 0.05 % cross-reactivity with dehydroepiandrosterone sulphate (DHEAS), less than 10 % cross-reactivity with 5.alpha.-dihydrotestosterone (5.alpha.-DHT) and less than 5 % cross-reactivity with androstenedione determined on the basis of ED50 values.

La présente invention concerne des anticorps monoclonaux et leurs dérivés s'utilisant dans des méthodes diagnostiques immunologiques de testostérone. En particulier, on a découvert que ces réactifs présentaient une affinité avec le testostérone d'au moins 10?9¿ M?-1¿, une réactivité croisée avec le sulfate de déhydroépiandrostérone (DHEAS) inférieure à 0,05 %, une réactivité croisée avec 5.alpha.-dihydrotestostérone (5.alpha.-DHT) inférieure à 10 % et une réactivité croisée avec androstènedione inférieure à 5 %, sur la base de valeurs ED¿50?.

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