FLT3 Inhibitor

BSc5371 is a potent and irreversible FLT3 inhibitor, with K_ds of 1.3, 0.83, 1.5, 5.8 and 2.3 nM for mutant FLT3(D835H), FLT3(ITD, D835V), FLT3(ITD, F691L), FLT3-ITD and wild type FLT3wt, respectively. BSc5371 is cytotoxic to FLT3-dependent cell lines.

Quizartinib (AC220)-d₈ is deuterium labeled Quizartinib (HY-13001). Quizartinib is an orally active, potent and selective FLT3 inhibitor. Quizartinib inhibits kinase activity of mutant-FLT3, -PDGFRA and -KIT isoforms and inhibits autophosphorylation. Quizartinib inhibits cellular proliferation, induces apoptosis in cancer cells. Quizartinib can be used for the research of cancer.

MAX-40279 hemifumarate is a dual and orally active inhibitor of FLT3 kinase and FGFR kinase. MAX-40279 hemifumarate is also effective against the FLT3 mutants such as FLT3^D835Y, suggesting that it can overcome resistance to Quizartinib (HY-13001) and Sorafenib (HY-10201). MAX-40279 hemifumarate inhibits NDRG1 phosphorylation at Ser330 and suppresses endothelial-to-mesenchymal transition (EndMT). MAX-40279 hemifumarate can be used for the research of acute myelogenous leukemia (AML).

AT9283 lactic acid is a multi-targeted kinase inhibitor with potent activity against Aurora A/B, JAK2/3, Abl (T315I) and Flt3 (IC₅₀s ranging from 1 to 30 nM). AT9283 lactic acid inhibits growth and survival of multiple solid tumors in vitro and in vivo.

Tuspetinib (HM43239) hydrate is an orally active and selective FLT3 inhibitor with IC₅₀s of 1.1 nM, 1.8 nM and 1.0 nM for FLT3 WT, FLT3 internal tandem duplication (ITD) and FLT3 D835Y kinases, respectively. Tuspetinib hydrate inhibits the kinase activity of FLT3 as a reversible type I inhibitor and modulates p-STAT5, p-ERK, SYK, JAK1/2, and TAK1. Tuspetinib hydrate inhibits the proliferation and induces the apoptosis of leukemic cells.

Rebastinib tosylate (DCC-2036 tosylate) is an orally active, non-ATP-competitive Bcr-Abl inhibitor, with IC₅₀ values of 0.8 nM and 4 nM against Abl1^WT and Abl1^T315I, respectively. Rebastinib tosylate potently inhibits CYP2C8 (IC₅₀ = 0.0533 μM) and CYP2C9 (IC₅₀ = 2.54 μM). Rebastinib tosylate allosterically inhibits Tie2 with an IC₅₀ of 0.63 nM. Rebastinib tosylate inhibits the transcriptional activity of FoxO1. Rebastinib tosylate inhibits SRC family kinases, KDR and FLT3 kinases. Rebastinib tosylate induces Apoptosis. Rebastinib tosylate exerts anti-tumor activity in breast cancer. Rebastinib tosylate exerts anti-angiogenic effects. Rebastinib tosylate increases myotube diameter and improves reduced contractility. Rebastinib tosylate can be used in research related to triple-negative breast cancer, luminal breast cancer, pancreatic neuroendocrine tumors, muscle atrophy, cancer cachexia, chronic myeloid leukemia, and B-lymphocytic leukemia.

Pacritinib hydrochloride is a potent inhibitor of both wild-type JAK2 (IC₅₀=23 nM) and JAK2^V617F mutant (IC₅₀=19 nM). Pacritinib hydrochloride also inhibits FLT3 (IC₅₀=22 nM) and its mutant FLT3^D835Y (IC₅₀=6 nM). Pacritinib hydrochloride can be used for the research of acute myeloid leukemia (AML) and myelofibrosis (MF).

FLT3/HDAC-IN-1 is a dual inhibitor of FLT3/HDAC, with IC₅₀ values of 30.4, 52.4, and 14.7 nM for FLT3, HDAC1, and HDAC3, respectively. FLT3/HDAC-IN-1 can induce apoptosis in MV-4-11 cells and has anti-proliferative effects on FLT3 mutant-transformed BaF3 cells. FLT3/HDAC-IN-1 is being researched for its potential in treating hard-to-treat solid tumors and hematological malignancies.

HSK205 is a dual FLT3 and haspin inhibitor, with IC₅₀ of 0.187 nM for FLT3. HSK205 has antitumor activity.

FLT3-IN-35 (Compound 4K) is an orally active, covalent, irreversible FLT3 inhibitor. FLT3-IN-35 inhibits the phosphorylation of FLT3 and its downstream signaling factors, as well as induces cell cycle arrest and apoptosis. FLT3-IN-35 inhibits the phosphorylation of FLT3 and its downstream signaling factors, as well as induced cell cycle arrest and apoptosis. FLT3-IN-35 can be used for the study of acute myeloid leukemia (AML).

MZH29 is a potent and orally active FLT3 inhibitor. MZH29 shows inhibitory effects on wild-type and mutant FLT3, including the FLT3-ITD, FLT3-D835H/Y/V and FLT3-K663Q mutants. MZH29 retains its potent inhibitory effect against the FLT3-ITD/F691L mutation, a drug resistance mutation against the well-known FLT3 inhibitor, AC220 (HY-13001). MZH29 can be used for the research of cancer, such as acute myeloid leukemia (AML).

Multi-kinase inhibitor 3 (compound 12) is a potent and orally active multikinase inhibitor with IC₅₀ values of 1.59, 1.23, 1.19, 0.59, 0.22, 1.15 nM for FLT1/VEGFR1, KDR/VEGFR2, FLT4/VEGFR3, FLT3, PDGFRα, PDGFRβ, respectively. Multi-kinase inhibitor 3 shows antiproliferative activity. Multi-kinase inhibitor 3 shows anticancer activity.

PDGFRα/FLT3-ITD-IN-3 (Compound 18d) is a potent inhibitor of PDGFRα/FLT3 with IC₅₀s of 0.153 and 0.004 μM, respectively. PDGFRα/FLT3-ITD-IN-3 has the potential for the research of acute myeloid leukemia or chronic eosinophilic leukemia.

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 FLT3^D835Y, 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.

SB1578 (CT-1578) is a selective JAK2 and FLT3 inhibitor with an IC₅₀ of 46 nM and 60 nM, respectively. SB1578 exhibits high selectivity for other kinase targets. SB1578 can be used for the study of non-oncology indication rheumatoid arthritis.

FLT3/ITD-IN-1 (Compound 1) is a potent FLT3 internal tandem duplications (FLT3-ITD) inhibitor with IC₅₀ values of 38.2 nM and 144.1 nM against FLT3 and FLT3-ITD, respectively. FLT3/ITD-IN-1 displays excellent antiproliferative activities against acute myeloid leukemia cell lines.

Lomonitinib is a highly potent and selective pan-FLT3/IRAK4 inhibitor with antitumor activity. Lomonitinib is promising for research of myeloid leukemia.

Antiproliferative agent-30 (Compound 8g) inhibits tubulin assembly and inhibits FLT3 and Abl1. Antiproliferative agent-30 has vascular-disrupting activity. Antiproliferative agent-30 has broad antiproliferative activities against cancer cell lines (IC₅₀s: 0.054 nM, 0.008 nM, 0.144 nM for HCT-116, K562, MV-4-11 cells respectively). Antiproliferative agent-30 also has anticancer effect against AML with FLT3-ITD-TKD mutation.

KRC-108, an aminopyridine, is an orally active multiple kinase inhibitor with IC₅₀s of 80 nM, 23 nM, 3 nM, 70 nM, 30 nM, 39 nM for c-Met, c-Met M1250T, c-Met Y1230D, Ron, Flt3 and TrkA, respectively. KRC-108 induces cell cycle arrest, apoptotic cell death, and autophagy. KRC-108 exhibits anti-tumor activity in vivo in HT29 colorectal cancer, NCI-H441 lung cancer xenograft models in athymic BALB/c nu/nu mice.

Multi-kinase-IN-15 is an orally active multi-kinase inhibitor. Multi-kinase-IN-15 inhibits the kinase activity of MNK1, MNK2, ABL1, ABL1 T315I, FLT3, VEGFR2, RET, cKIT, FGFR2, PDGFRα, and PDGFRβ. Multi-kinase-IN-15 dose-dependently reduces phosphorylation of eIF4E and phosphorylated Crkl in tumor cells, and decreases phosphorylation of eIF4E in tumor tissues. Multi-kinase-IN-15 inhibits tumor growth. Multi-kinase-IN-15 can be used for research on chronic myeloid leukemia.