Pimicotinib is a CSF1R inhibitor with antitumor activity[1].
cFMS-IN-2 is a FMS kinase inhibitor with an IC50 of 0.024 μM.
Ki-20227 is a highly selective c-Fms tyrosine kinase(CSF1R) inhibitor with IC50 value of 2 nM; 6 fold and > 100 fold selectivity over VEGFR2(IC50=12 nM) and c-Kit/PDGFRβ(IC50=451/217 nM), respectively.IC50 value: Target: CSF1Rin vitro: Ki20227 did not inhibit other kinases tested, such as fms-like tyrosine kinase-3, epidermal growth factor receptor, or c-Src (c-src proto-oncogene product). Ki20227 was also found to inhibit the M-CSF-dependent growth of M-NFS-60 cells but not the M-CSF-independent growth of A375 human melanoma cells in vitro [1]. Ki20227 inhibited M-CSF-dependent reactions, such as lipopolysaccharide-induced tumor necrosis factor-alpha production, which were enhanced by M-CSF in vitro [2]. in vivo: Ki20227 decreased the number of tartrate-resistant acid phosphatase-positive osteoclast-like cells on bone surfaces in ovariectomized (ovx) rats [1]. In addition, the number of CD11b(+), Gr-1(+), and Ly-6G(+) cells in the spleen decreased in the Ki20227-treated mice, and the CII-induced cytokine production in splenocytes isolated from the Ki20227-treated arthritic mice was also reduced [2]. Ki20227 treatments inhibited the turn-over/expansion of myeloid cells provoked by the immunization and subsequent MOG-specific T cell responses in our EAE animal model [3].
PF 477736 is a potent, selective ATP-competitive inhibitor of Chk1, with a Ki of 0.49 nM, 100-fold selectivity versus Chk2 (Ki, 47 nM).
Plonmarlimab (TJ003234) is an anti-GM-CSF monoclonal antibody. Plonmarlimab can be used for research of rheumatoid arthritis and COVID-19[1][2].
Pexidartinib (PLX-3397) is a multi-targeted receptor tyrosine kinase inhibitor with IC50s of 13 nM, 27 nM, and 11 nM for CSF1R, c-Kit, and FLT3, respectively.
Mavrilimumab (CAM 3001) is a monoclonal antibody that binds to the α subunit of the granulocyte-macrophage colony stimulating factor (GM-CSF) receptor and blocks intracellular signalling downstream of GM-CSF. GM-CSF might be a mediator of the hyperactive inflammatory response associated with respiratory failure and death[1].
IHMT-TRK-284 (Compound 34) is a potent, orally active type II TRK kinase inhibitor with IC50 values of 10.5, 0.7, and 2.6 nM to TRKA, B, and C respectively. IHMT-TRK-284 displays great selectivity profile in the kinome and good in vivo antitumor efficacies[1].
CSF1R-IN-15 (compound 23) is an inhibitor targeting CSF1R. The colony-stimulating factor-1 receptor (CSF1R) is a tyrosine kinase embedded in the cell membrane of macrophages. The receptor is activated by colony-stimulating factor-1 (CSF-1) and interleukin-34, and signaling via CSF1R is crucial for the differentiation, proliferation, and survival of macrophages[1].
IACS-9439 is a potent, selective, and orally active CSF1R inhibitor with a Ki value of 1 nM inhibitor. IACS-9439 can be used for advanced solid tumors research[1].
Namilumab (AMG203) is a human IgG1 monoclonal antibody that binds with high affinity to the GM-CSF ligand, potently neutralizing GM-CSF. Namilumab can be used for the research of rheumatoid arthritis[1].
Cabiralizumab (FPA 008) is an anti-CSF1R monoclonal antibody (MAb). Cabiralizumab enhances T cell infiltration and antitumor T cell immune responses. Cabiralizumab inhibits the activation of osteoclasts and blocks bone destruction, and can be used in the research of rheumatoid arthritis (RA). Cabiralizumab can combine with Nivolumab (HY-P9903) for lung cancer research[1][2].
Eflapegrastim is a humanized IgG4 monoclonal antibody, is also a granulocyte colony-stimulating factor (G-CSF). Eflapegrastim targets to G-CSF receptor (c-Fms). Eflapegrastim stimulates proliferation and differentiation of neutrophil progenitor cells and maintains stable numbers of mature and functional neutrophils. Eflapegrastim also shortens the duration of neutropenia[1].
GW2580 is an orally bioavailable inhibitor of c-Fms kinase which completely inhibits human cFMS kinase in vitro at 0.06 μM.
CSF1R-IN-2 (compound 5) is an oral-active inhibitor of SRC, MET and c-FMS, with IC50 values of 0.12 nM, 0.14 nM and 0.76 nM for SRC, MET and c-FMS respectively[1].
c-Fms-IN-14 (Example 76) is a c-Fms inhibitor with an IC50 value of 4 nM. c-Fms-IN-14 can be used for research of cancer and autoimmune diseases[1].
PLX647 is a highly specific dual FMS/KIT kinase inhibitor with IC50 of 28/16 nM respectively.IC50 value: 28/16 nM(FMS/KIT) [1]Target: FMS/KIT dual inhibitorin vitro: PLX647 was tested against a panel of 400 kinases at a concentration of 1 μM, 35-fold above its FMS enzymatic IC50 and 60-fold above its KIT enzymatic IC50. In addition to FMS and KIT, the activities of only nine kinases were inhibited by more than 50%. PLX647 potently inhibits the growth of FLT3–ITD-expressing MV4-11 cells (IC50 = 0.11 μM) but not OCI-AML5 (IC50 = 1.6 μM), which express wild-type FLT3. PLX647 displayed minimal inhibition of the proliferation of Ba/F3 cells expressing BCR–KDR (IC50 = 5 μM) [1]. in vivo: PLX647 (40 mg/kg) was dosed orally 4.25 h before LPS injection. Treatment with PLX647 reduced serum TNF-α levels by 85% compared with the vehicle control. In the same experiment, the positive control dexamethasone (0.5 mg/kg, PO) lowered the TNF-α levels by 96%. Treatment with 40 mg/kg PLX647 also resulted in significant inhibition of IL-6 release (75%), with similar potency to dexamethasone (70%) . In the UUO kidneys, treatment with PLX647 [40 mg/kg twice daily (BID)] resulted in reduction in the levels of F4/80+ macrophages by 77% compared with vehicle [1].
Sotuletinib (BLZ945) dihydrochloride is an orally active and blood-brain barrier-permeable CSF1-R-specific inhibitor (IC50=1 nM). Sotuletinib (BLZ945) dihydrochloride induces tumor cell apoptosis and effectively inhibits tumor growth in mouse models. Sotuletinib dihydrochloride can be used in cancer and amyotrophic lateral sclerosis (ALS) research[1].
c-Fms-IN-6 is a potent inhibitor of c-FMS, with an IC50 of ≤10 nM for unphosphorylated c-FMS, also weakly inhibits unphosphorylated c-KIT and PDGFR (IC50, > 1 μM). Used in the research of autoimmune diseases[1].
PLX5622 is a highly selective brain penetrant and oral active CSF1R inhibitor, for extended and specific microglial elimination, preceding and during pathology development. PLX5622 demonstrates desirable PK properties in varies animals[1].
c-FMS inhibitor is a novel c-Fms kinase inhibitor with a potential as anti-inflammatory agent and antirheumatic agent.IC50 value:Target: c-Fms
Pexidartinib hydrochloride (PLX-3397 hydrochloride) is a potent, selective and ATP-competitive CSF1R (cFMS) and c-Kit inhibitor, with IC50s of 20 and 10 nM, respectively. Pexidartinib exhibits 10- to 100-fold selectivity for c-Kit and CSF1R over other related kinases, such as FLT3, KDR (VEGFR2), LCK, FLT1 (VEGFR1) and NTRK3 (TRKC), with IC50s of 160, 350, 860, 880, and 890 nM, respectively[1].
c-Fms-IN-10 is the derivative of thieno [3,2-d] pyrimidine, an kinase inhibitor of FMS (Colony stimulating factor-1 receptor, CSF-1R) with IC50 of 2 nM.c-Fms-IN-10 has anti-tumor activity[1].
cFMS Receptor Inhibitor IV (Compound 42) is a potent cFMS inhibitor with an IC50 of 0.017 μM[1].
BLZ945 is a potent, selective and brain-penetrant CSF-1R inhibitor with an IC50 of 1 nM, showing more than 1,000-fold selectivity against its closest receptor tyrosine kinase homologs.
c-Fms-IN-12 is a c-Fms inhibitor extracted from patent WO2011079076A1, Compound Example 65, has an IC50 of 93.6-283.7 nM[1].
Anumigilimab (CSL-324) is an humanized IgG2a mAb against human granulocyte colony-stimulating factor (G-CSF) receptor. Anumigilimab can be used for increasing numbers of neutrophils at sites of inflammation[1][2].
CSF1R-IN-7 (Formula I) is a CSF-1R inhibitor. CSF1R-IN-7 can be used for Alzheimer’s disease research[1].
c-Fms-IN-1 is a FMS kinase inhibitor with an IC50 of 0.0008 μM[1].
OSI-930 is a potent inhibitor of Kit, KDR and CSF-1R with IC50 of 80 nM, 9 nM and 15 nM, respectively; also potent to Flt-1, c-Raf and Lck and low activity against PDGFRα/β, Flt-3 and Abl.IC50 value: 9 nM(VEGFR2); 15 nM(CSF1R); 80 nM (Kit activated) [1]Target: VEGFR2/Kit/CSF1Rin vitro: OSI-930 inhibits the cell proliferation in the HMC-1 cell line with IC50 of 14 nM without significant effect on growth of the COLO-205 cell line that does not express a constitutively active mutant receptor tyrosine kinase. Moreover, OSI-930 also induces apoptosis in HMC-1 cell line with EC50 of 34 nM [1]. A recent study shows that OSI-930 inactivates purified, recombinant cytochrome P450 (P450) 3A4 with a Ki of 24 μM in a time- and concentration-dependent mode [2].in vivo: OSI-930, administrated at the maximally efficacious dose of 200 mg/kg by oral gavage, exhibits potent antitumor activity in a broad range of preclinical xenograft models including HMC-1, NCI-SNU-5, COLO-205 and U251 xenograft models [1].