Preparation of antibodies against a novel immunosuppressant, FTY720, and development of an enzyme immunoassay for FTY720

Bioorganic & Medicinal Chemistry
Norimasa MatsumotoTetsuro Fujita

Abstract

FTY720 (1) is a novel immunosuppressant (immunomodulator), derived from ISP-I (2: myriocin and thermozymocidin). To clarify the pharmacokinetic properties of 1, antibodies against 1 were prepared and a competitive enzyme immunoassay (EIA) was developed. Two kinds of haptens, 3 and 4, for 1 were synthesized and coupled to ovalbumin (OVA). Rabbits were immunized with 3-OVA or 4-OVA, and corresponding antibodies were obtained. Both antibodies recognized the 2-amino-2-(2-phenylethyl)propane-1,3-diol moiety in 1. Using the anti-3-OVA antibody, a competitive EIA for 1 was developed and evaluated. The range of quantification by the EIA was 0.06-10 ng/mL. The application of the EIA has enabled us to measure the FTY720 concentration in serum after oral administration of 1 (1mg/kg) to rats.

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Citations

Dec 14, 2011·BMC Musculoskeletal Disorders·Martin H StradnerWinfried B Graninger
Jan 26, 2007·ChemMedChem·Antonio DelgadoGemma Fabriás

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