c Kit IN 1

c-Kit-IN-1 (DCC-2618) is an effective inhibitor of c-Met and c-Kit (IC50s<200 nM).

JNK-IN-8 (JNK Inhibitor XVI) is an irreversible JNK1/2/4 inhibitor (IC50: 4.7/18.7/1 nM) with over 10-fold selectivity compared to MNK2 and Fms, and no inhibition of Met, c-Kit, or PDGFRβ in the A375 cell line.

Famitinib (SHR1020) is a potent orally active multi-targeted kinase inhibitor that effectively inhibits the activity of c-kit, VEGFR-2, and PDGFRβ with IC50 values of 2.3 nM, 4.7 nM, and 6.6 nM, respectively [1]. It demonstrates remarkable antitumor properties in human gastric cancer cells and xenografts, inducing apoptosis [2].

Cediranib (AZD2171) (AZD2171) is a highly potent (IC50 < 1 nmol L) ATP-competitive inhibitor of recombinant KDR tyrosine kinase in vitro, also inhibits Flt1 4 (IC50: 5 nM ≤3 nM), similar activity against PDGFRβ and c-Kit, selective more for VEGFR than PDGFR-α (36-fold), CSF-1R (110-fold), and Flt3 (1000-fold) in HUVEC cells.

Sitravatinib (MGCD516) is an inhibitor targeting multiple RTKs involved in driving sarcoma cell growth, including c-Met, c-Kit, PDGFRα β, PDGFR, and Axl.

c-Fms-IN-6 is a potent inhibitor of c-FMS (IC50 ≤10 nM for unphosphorylated c-FMS) and weakly inhibits unphosphorylated c-KIT and PDGFR (IC50: >1 μM).

c-Kit-IN-2 is a c-KIT inhibitor (IC50: 82 nM) exhibiting superior antiproliferative activities against all three GIST cell lines, GIST430, GIST882, and GIST48 (GI50s: 1, 3, and 2 nM).

NAMPT inhibitor-linker 1, a drug-linker conjugate for ADC, integrates an NAMPT inhibitor (as a payload) with a linker. In the formulation of ADC-3, it pairs with an anti-c-Kit monoclonal antibody, demonstrating strong efficacy against c-Kit expressing cell lines, specifically GIST-T1 and NCI-H526, where it exhibits IC50 values of <3 pM and 9 pM, respectively.

C-Kit-IN-6 (Compound 101) is an inhibitor of c-Kit, demonstrating IC50 values ranging from 100 nM to 1 μM.

C-Kit-IN-8 (Compound 53) acts as an inhibitor of c-Kit kinase, hampering uKIT kinase activity with an IC50 greater than 1 μM. Additionally, it inhibits the proliferation of both wild-type and mutant GIST430 and BaF3 cancer cells, exhibiting an IC50 greater than 0.1 μM.

SKLB4771 (FLT3-IN-1) is a novel potent and selective Flt3 inhibitor.

c-Kit-IN-9 (Compound D9) is an inhibitor of c-Kit. It suppresses inflammation in J774A.1, RAW264.7, MPMs cells, and lung tissue by blocking LPS-induced NF-κB pathway activation. Additionally, c-Kit-IN-9 demonstrates effective anti-inflammatory activity in mouse models of acute lung injury and sepsis. It is useful for research on acute lung injury and related inflammatory diseases.

AMG-25 (c-Kit-IN-5-1) is a selective and potent c-Kit inhibitor that inhibits c-Kit, KDR, p38, Lck, and Src, and can be used in the study of mast cell-associated fibrosis.

OSI-930, an orally active inhibitor of c-Kit and the vascular endothelial growth factor receptor-2 (VEGFR-2), targets cancer cell proliferation and blood vessel growth (angiogenesis) in tumors.

PKC412(Midostaurin (PKC412); CGP41231; CGP41251) is a broad spectrum protein kinase inhibitor. Midostaurin inhibits protein kinase C alpha (PKCalpha), vascular endothelial growth factor receptor 2 (VEGFR2), c-kit, platelet-derived growth factor receptor (PDGFR) and FMS-like tyrosine kinase 3 (FLT3) tyrosine kinases, which may result in disruption of the cell cycle, inhibition of proliferation, apoptosis, and inhibition of angiogenesis in susceptible tumors.

Antitumor agent-70 (compound 8b) is a highly potent multi-targeted kinase inhibitor, particularly targeting c-Kit. It demonstrates remarkable anti-tumor activity and induces cell apoptosis, with strong inhibition of multiple myeloma at an IC50 value of 0.12 μM. Therefore, Antitumor agent-70 holds great potential as an effective therapy for combating cancer, especially in cases involving c-Kit. [1]

Multi-kinase-IN-2 is an orally active inhibitor of angiokinases. multi-kinase-IN-2 significantly inhibits the activity of angiokinases such as VEGFR-1 2 3, PDGFRα β, FGFR-1, LYN and c-KIT kinases. -IN-2 significantly attenuates phosphorylation of AKT and ERK proteins, induces apoptosis and has anticancer effects.

Imatinib Impurity E is a specific impurity found in Imatinib, an orally available inhibitor of multiple tyrosine kinases, including BCR ABL, v-Abl, PDGFR, and c-kit. Imatinib (STI571) operates by semi-competitively inhibiting enzyme activity; it binds adjacent to the ATP binding site, inducing a closed or self-inhibited conformation [1] [2] [3] [4]. Additionally, Imatinib acts as an inhibitor against SARS-CoV and MERS-CoV [5].

Briquilimab (JSP-191) is a humanized, aglycosylated monoclonal antibody that directly inhibits the interaction between the stem cell factor (SCF) ligand and its receptor, KIT (CD117), leading to the blockade of the downstream KIT signaling pathway and ultimately inducing mast cell apoptosis; the SCF-KIT interaction is well-characterized as essential for mast cell survival, and its inhibition has been demonstrated to directly trigger mast cell apoptosis primarily through the Bim-mediated pathway, thereby removing the underlying cellular source of inflammation for many immunological and inflammatory diseases, including chronic urticaria and asthma.

Multi-kinase-IN-6 (compound 10e) is a multikinase inhibitor that impedes the activity of TrkA, ALK2, c-KIT, EGFR, PIM1, CK2α, CHK1, and CDK2. It exhibits antiproliferative effects on MCF7, HCT116, and EKVX cancer cell lines with IC50s of 3.36 μM, 1.40 μM, and 3.49 μM, respectively. Additionally, Multi-kinase-IN-6 induces cell cycle arrest at the G1 S and G1 phases in MCF7 and HCT116 cells, respectively, and effectively triggers apoptosis [1].

Compound 18, also known as FLT3 CHK-IN-1, is a dual inhibitor targeting FLT3 and CHK1, exhibiting over 1700-fold selectivity towards c-KIT and significantly diminishing hERG affinity, with an IC50 of 58.4 μM. It demonstrates efficacy in suppressing tumor growth in mouse xenotransplantation models implanted with MV-4-11 cells [1].

CYY292 is a chemical compound acting as an inhibitor of PDGFRα, PDGFRβ, FGFR1, -2, and -3, with respective IC50 values of 5.35, 4.6, 28, 28, and 78 nM. It exhibits selectivity over FGFR4 (IC50 > 1,000 nM) while also targeting c-Kit, VEGFR2, VEGFR1, and IGF-1R (IC50 values of 67, 33, 36, and 75 nM, respectively). Additionally, CYY292 inhibits EGFR, BTK, Cdk4/cyclin D3, and MET with IC50 values of 128, 198, 214, and 396 nM, respectively. This compound demonstrates efficacy in arresting the proliferation of various osteosarcoma cell lines—MG-63, U2OS, MNNG/HOS, and Saos-2—with IC50s ranging from 0.72 to 1.36 µM. Moreover, CYY292 at 0.3 and 0.5 µM concentrations inhibits migration and invasion in glioblastoma cells (U87MG and LN-229) and, at a dose of 30 mg/kg, decreases tumor volume and enhances survival in a U87MG orthotopic mouse xenograft model.

N-Desmethyl Regorafenib N-oxide, an active metabolite of the multi-kinase inhibitor regorafenib, originates through the action of the cytochrome P450 (CYP) isoform CYP3A4. This compound demonstrates efficacy in vitro by inhibiting key enzymes such as VEGFR2, Tie2, c-Kit, and B-RAF, and it exhibits tumor growth inhibition in HT-29 and MDA-MB-231 mouse xenograft models at a dosage of 1 mg/kg.

Apatinib-d8 is a deuterated compound of Apatinib. Apatinib has a CAS number of 811803-05-1. Apatinib is an orally bioavailable and specific VEGFR2 inhibitor (IC50: 1 nM). In addition, this agent mildly inhibits c-Kit and c-SRC tyrosine kinases.