HKI 357

HKI-357 is an irreversible dual inhibitor of EGFR and ERBB2 with IC50s of 34 nM and 33 nM, respectively. HKI-357 suppresses EGFR autophosphorylation (at Y1068), and AKT and MAPK phosphorylation[1].

Research Areas >> Cancer

Signaling Pathways >> JAK/STAT Signaling >> EGFR

Signaling Pathways >> Protein Tyrosine Kinase/RTK >> EGFR

EGFR:34 nM (IC50)

ErbB2:33 nM (IC50)

HKI-357 (0.01-10 μM) is effective in suppressing ligand-induced EGFR autophosphorylation and its downstream signaling, as determined by AKT and MAPK phosphorylation in NCI-H1975 cells[1]. HKI-357 also is effective in suppressing EGFR autophosphorylation (measured at residue Y1068), and AKT and MAPK phosphorylation in parental NCI-H1650 cells harboring the delE746-A750 EGFR mutation[1]. Western Blot Analysis[1] Cell Line: NCI-H1975 bronchoalveolar cell line Concentration: 0.01, 0.01, 0.1, 1 and 10 μM Incubation Time: Result: Suppressed ligand-induced EGFR autophosphorylation and its downstream signaling AKT and MAPK phosphorylation.

[1]. Kwak EL, et al. Irreversible inhibitors of the EGF receptor may circumvent acquired resistance to gefitinib. Proc Natl Acad Sci U S A. 2005 May 24;102(21):7665-70.