PDGFR Inhibitor

Imatinib (STI571) is an orally bioavailable tyrosine kinases inhibitor that selectively inhibits BCR/ABL, v-Abl, PDGFR and c-kit kinase activity. Imatinib (STI571) works by binding close to the ATP binding site, locking it in a closed or self-inhibited conformation, therefore inhibiting the enzyme activity of the protein semicompetitively. Imatinib also is an inhibitor of SARS-CoV and MERS-CoV.

Avapritinib (BLU-285) is a highly potent, selective, and orally active KIT and PDGFRA activation loop mutant kinases inhibitor with IC₅₀s of 0.27 and 0.24 nM for KIT D816V and PDGFRA D842V, respectively. Avapritinib (BLU-285) binds the active conformation of the kinase and shows antitumor activity. Avapritinib (BLU-285) attenuates the transport function of both ABCB1 and ABCG2.

Imatinib Mesylate (STI571 Mesylate) is an orally active tyrosine kinases inhibitor that inhibits c-Kit, Bcr-Abl, and PDGFR (IC₅₀=100 nM) tyrosine kinases.

Masitinib (AB1010) is a potent, orally bioavailable, and selective inhibitor of c-Kit (IC₅₀=200 nM for human recombinant c-Kit). It also inhibits PDGFRα/β (IC₅₀s=540/800 nM), Lyn (IC₅₀= 510 nM for LynB), Lck, and, to a lesser extent, FGFR3 and FAK. Masitinib (AB1010) has anti-proliferative, pro-apoptotic activity and low toxicity.

CHIR-124 is a potent and selective Chk1 inhibitor with IC₅₀ of 0.3 nM, and also potently targets PDGFR and FLT3 with IC₅₀s of 6.6 nM and 5.8 nM.

Methylnissolin (Astrapterocarpan) is an osteoclast inhibitor with anti-inflammatory, neuroprotective and antioxidant activities. Methylnissolin downregulates the activation of the MAPK and PI3K/AKT pathways, inhibits the phosphorylation of MAPK1 and AKT1, and blocks PDGF-BB-induced phosphorylation of ERK1/2. Methylnissolin reduces the expression and secretion of proinflammatory mediators, decreases intracellular ROS levels, upregulates antioxidant enzymes, and downregulates osteoclastogenesis markers. Methylnissolin is applicable to research related to ischemic stroke, osteoporosis, cardiovascular diseases, skin aging, etc.

PP121 is a multi-targeted kinase inhibitor with IC₅₀s of 10, 60, 12, 14, 2 nM for mTOR, DNK-PK, VEGFR2, Src, PDGFR, respectively.

Vesencumab (MNRP-1685A) is IG1 antibody against neuropilin-1 (NRP-1). Vesencumab binds to NRP-1 and prevents the subsequent coupling of NRP-1 to VEGFR-2. Vesencumab has anti-angiogenic and anti-neoplastic activities. Vesencumab can be used in the research of metastatic solid tumors, including ovarian cancer.

Sennoside B is a potent and orally active platelet-derived growth factor (PDGF) inhibitor. Sennoside B inhibits cell proliferation and the expression of phosphorylation of PDGFR-β, STAT-5, AKT and ERK induced by PDGF-BB. Sennoside B shows gastroprotective activities. Sennoside B has the potential for the research of gastritis.

Olaratumab (IMC-3G3; LY3012207) is an anti-platelet-derived growth factor receptor alpha (PDGFRα) human monoclonal IgG1 antibody with antitumor activity.

Vorolanib (CM082) is an orally active, potent multikinase VEGFR/PDGFR inhibitor. Vorolanib is a potent ATP-binding cassette (ABC) transporter inhibitor. Vorolanib is an angiogenesis inhibitor and has antitumor activity combined with ZD1839 (HY-50895).

Flumatinib (HHGV678) is an orally available, selective inhibitor of Bcr-Abl. Flumatinib inhibits c-Abl, PDGFRβ and c-Kit with IC₅₀s of 1.2 nM, 307.6 nM and 665.5 nM, respectively.

Pimicotinib (ABSK021) is a selective and orally active CSF1R inhibitor with an IC₅₀ value of 19.48 nM (determined by inhibiting ADP production). Pimicotinib exhibits anti-tumor activity.

SU11652 is a potent receptor tyrosine kinase (RTK) inhibitor. SU11652 also inhibits several members of the split kinase family of RTKs, including VEGFR, FGFR, PDGFR, and Kit. SU11652 can be uesd for spontaneous cancers expressing Kit mutations research.

Ki20227 is an orally active and highly selective c-Fms tyrosine kinase (CSF1R) inhibitor with IC₅₀s of 2 nM, 12 nM, 451 and 217 nM for CSF1R, VEGFR2 (vascular endothelial growth factor receptor-2), c-Kit (stem cell factor receptor) and PDGFRβ (platelet-derived growth factor receptor β). Ki20227 suppresses osteoclast differentiation and osteolytic bone destruction.

Masitinib mesylate (AB-1010 mesylate) is a potent, orally bioavailable, and selective inhibitor of c-Kit (IC₅₀=200 nM for human recombinant c-Kit). It also inhibits PDGFRα/β (IC₅₀s=540/800 nM), Lyn (IC₅₀= 510 nM for LynB), Lck, and, to a lesser extent, FGFR3 and FAK. Masitinib mesylate (AB-1010 mesylate) has anti-proliferative, pro-apoptotic activity and low toxicity.

PD-161570 is a potent and ATP-competitive human FGF-1 receptor inhibitor with an IC₅₀ of 39.9 nM and a K_i of 42 nM. PD-161570 also inhibits the PDGFR, EGFR and c-Src tyrosine kinases with IC₅₀ values of 310 nM, 240 nM, and 44 nM, respectively. PD-161570 inhibits PDGF-stimulated autophosphorylation and FGF-1 receptor phosphorylation with IC₅₀s of 450 nM and 622 nM, respectively. PD-161570 is also a bone morphogenetic proteins (BMPs) and TGF-β signaling inhibitor.

AG 1295 is a selective platelet-derived growth factor receptor (PDGFR) tyrosine-kinase inhibitor. AG1295 abolishes autophosphorylation of the PDGFR whereas not affects the autophosphorylation of the EGF receptor.

SU4312 is the racemate of (Z)-SU4312 and (E)-SU4312. (Z)-SU4312 inhibits PDGFR and FLK-1 with IC₅₀s of 19.4 and 0.8 μM, respectively. (E)-SU4312 inhibits PDGFR, FLK-1, EGFR, HER-2, and IGF-1R with IC₅₀s of 24.2, 5.2, 18.5, 16.9 and 10.0 μM, respectively.

Tandutinib (MLN518) is a potent and selective inhibitor of the FLT3 with an IC₅₀ of 0.22 μM, and also inhibits c-Kit and PDGFR with IC₅₀s of 0.17 μM and 0.20 μM, respectively. Tandutinib can be used for acute myelogenous leukemia (AML). Tandutinib has the ability to cross the blood-brain barrier.