Example 12
Nunc MaxiSorp® flat-bottom 96 well ELISA plates purchased from Thermo Fisher Scientific were coated with recombinant human FGFR4 (extracellular domain, Fc chimera; acquired from R&D Systems at a final concentration of 4 μg/well and processed according to manufacturer's instructions. Each well was incubated with 1.2 μg/ml of recombinant FGF-19 from R&D Systems, followed by treatment with indicated concentration of anti-FGFR4 antibody U4-3. After incubation and washes, bound FGF-19 was detected with 0.2 μg/ml of biotinylated anti-FGF19 antibody (R&D Systems) followed by incubation with alkaline-phosphatase conjugated Streptavidin. Enzymatic reaction was triggered by incubation with the AttoPhos® AP Fluorescent Substrate System (Promega and detected with the Fluostar Omega fluorescent plate reader from BMG Labtech. The data show that U4-3 is able to effectively compete the binding of FGF-19 to the receptor. The results are shown in