LT-540-717 (compound 32) is a potent FLT3 inhibitor (IC50=0.62 nM) with antiproliferative activity. LT-540-717 also inhibits several acquired FLT3 mutations, FLT3 (ITD, D835V), FLT3 (ITD, F691L), FLT3 (D835Y) and FLT3 (D835V). LT-540-717 has potential to be an anti-AML agent[1].
3-Hydroxy Midostaurin (CGP 52421), a metabolite of PKC412, effectively inhibits FMS-like tyrosine kinase-3 (FLT3) autophosphorylation with IC50s of approximately 132 nM and 9.8 μM in culture medium and plasma, respectively. 3-Hydroxy Midostaurin is less selective but more cytotoxic than PKC412[1].
c-Met-IN-14 (compound 26af) is a selective inhibitor of c-Met kinase from N-sulfonylamidine-based derivatives, with an IC50 value of 2.89 nM. c-Met-IN-14 shows anticancer activity by blocking phosphorylation of c-Met, and arrests cell cycle at G2/M phase. c-Met-IN-14 induces apoptosis of A549 cells in a dose-dependent manner[1].
PDGFRα/FLT3-ITD-IN-1 (Compound 12d) is a potent inhibitor of PDGFRα/FLT3 with IC50s of more than 0.036 and 0.003 μM, respectively. PDGFRα/FLT3-ITD-IN-1 has the potential for the research of acute myeloid leukemia or chronic eosinophilic leukemia[1].
ENMD-2076 is a multi-targeted kinase inhibitor with IC50s of 1.86, 14, 58.2, 15.9, 92.7, 70.8, 56.4 nM for Aurora A, Flt3, KDR/VEGFR2, Flt4/VEGFR3, FGFR1, FGFR2, Src, PDGFRα, respectively.
PDGFRα/FLT3-ITD-IN-2 (Compound 13d) is a potent inhibitor of PDGFRα/FLT3 with IC50s of more than 20 and 1.654 μM, respectively. PDGFRα/FLT3-ITD-IN-2 has the potential for the research of acute myeloid leukemia or chronic eosinophilic leukemia[1].
FLT3/ITD-IN-3 (Compound 19) is a potent FLT3 internal tandem duplications (FLT3-ITD) inhibitor with IC50 values of 0.3, 0.4 and 0.9 nM against FLT3D835Y, FLT3 and FLT3-ITD, respectively. FLT3/ITD-IN-3 potently inhibits the phosphorylation of FLT3 and displays excellent antiproliferative activities against acute myeloid leukemia cell lines[1].
Sitravatinib malate (MGCD516 malate) is an orally bioavailable receptor tyrosine kinase (RTK) inhibitor with IC50s of 1.5 nM, 2 nM, 2 nM, 5 nM, 6 nM, 6 nM, 8 nM, 0.5 nM, 29 nM, 5 nM, and 9 nM for Axl, MER, VEGFR3, VEGFR2, VEGFR1, KIT, FLT3, DDR2, DDR1, TRKA, TRKB, respectively[1]. Sitravatinib malate shows potent single-agent antitumor efficacy and enhances the activity of PD-1 blockade through promoting an antitumor immune microenvironment[2].
USP10 inhibitor Wu-5 (Wu-5) is a novel small molecule USP10 inhibitor inducing the degradation of FLT3-mutated protein, directly interacts and inactivates USP10, the deubiquitinase for FLT3-ITD in vitro (IC50=8.3 uM) and in FLT3-ITD-positive AML cells.Wu-5 selectively inhibited the viability of FLT3 inhibitor-sensitive (MV4-11, Molm13) and -resistant (MV4-11R) FLT3-ITD-positive AML cells with IC50 of 3.794, 5.056, and 8.386 uM, respectively.Wu-5 (1-10 μM) dose-dependently induced apoptosis of MV4-11, Molm13, and MV4-11R cells through the proteasome-mediated degradation of FLT3-ITD.Combined treatment of Wu-5 and crenolanib produced synergistic cell death in FLT3-ITD-positive cells via the reduction of both FLT3 and AMPKα proteins.
HP1328 is a potent inhibitor of FLT3 receptor tyrosine kinase (FLT3/ITD mutation). HP1328 is a benzoimidazole scaffold-based compound. HP1328 significantly reduces the leukemia burden and prolongs the survival of mice with FLT3/ITD leukemia[1].
JNJ-47117096 hydrochloride is potent and selective MELK inhibitor, with an IC50 of 23 nM, also effectively inhibits Flt3, with an IC50 of 18 nM.