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Fibroblast growth factor 17 (FGF17) is a member of the fibroblast growth factorfamily. FGF family members possess broad mitogenicand cell survival activities and are involved in a varietyof biological processes, including embryonicdevelopment cell growth, morphogenesis, tissue repair, tumor growth, andinvasion. Fibroblast Growth Factor Receptor 1 (FGFR1) is high affinity receptor for FGF17, thus a functional binding ELISA assay was conducted to detect the interaction of recombinant human FGF17 and recombinant human FGFR1. Briefly, biotin-linked FGF17 were diluted serially in PBS, with 0.01% BSA (pH 7.4). Duplicate samples of 100 ul were then transferred to FGFR1-coated microtiter wells and incubated for 1h at 37°C. Wells were washed with PBST 3 times and incubation with Streptavidin-HRP for 30min, then wells were aspirated and washed 5 times. With the addition of substrate solution, wells were incubated 15-25 minutes at 37°C. Finally, add 50 ul stop solution to the wells and read at 450 nm immediately. The binding activity of recombinant human FGF17 and human FGFR1 was shown, the EC50 for this effect is 0.52 ug/mL.

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