Biological Activity
FIIN-2 is an irreversible inhibitor of FGFR with an IC50 of 3.1, 4.3, 27, and 45 nM for FGFR1, FGFR2, FGFR3 and FGFR4, respectively.
In Vitro
FIIN-2 potently inhibits WT FGFRs (EC50s in the 1- to 93-nM range) and the gatekeeper mutant of FGFR2 (EC50 of 58 nM). FIIN-2 also moderately inhibits EGFR, with an IC50 of 204 nM. FIIN-2 inhibits proliferation of FGFR1-4 Ba/F3 cells with EC50s in the single- to double-digit nanomolar range and are especially potent against FGFR2, with EC50s in the 1-nM range. FIIN-2 shows good potency against gatekeeper mutant V564F[1].
In Vivo
Treatment of fish in the embryonic state with either FIIN-2 causes defects to the posterior mesoderm similar to the phenotypes reported following genetic knockdown of FGFR or treatment with other reported FGFR inhibitors. FIIN-2 causes mild or severe phenotypes to the tail morphogenesis in all treated embryonic zebrafish[1].
References & source
Published experimental findings depend on the model and assay conditions. They do not guarantee equivalent performance in every application. For laboratory research use only.
