trka/trkb

CG 428 is a potent tropomyosin receptor Kinase (TRK) Degrader (uSMITETM) with a DC50 of 0.36 nM. CG 428 comprises an analog of the pan-TRK inhibitor GNF-8625 joined by a linker to the cereblon E3 ligase ligand pomalidomide. CG 428 shows selectivity for TRKA over TRKC and TRKB with Kds of 1nM, 4.2 nM, and 28 nM. CG 428 inhibits the growth of KM12 colon cancer cells with an IC50 of 2.9 nM.

Amitriptyline hydrochloride (Annoyltin) is the hydrochloride salt of the tricyclic dibenzocycloheptadiene amitriptyline with antidepressant and antinociceptive activities.

IHMT-TRK-284 (Compound 34) is a potent, orally active type II TRK kinase inhibitor with IC50 values of 10.5 nM for TRKA, 0.7 nM for TRKB, and 2.6 nM for TRKC. The compound demonstrates good selectivity within the kinase group and exhibits significant anti-tumor efficacy in vivo.

Trk-IN-4 is an effective pan-Trk inhibitor in cell-based assays (IC50s: 1.9 nM, 2.6 nM, and 1.1 nM for TrkA, TrkB, and TrkC, respectively).

GNF-5837 is a specific, and orally bioavailable pan-TRK inhibitor for TrkA TrkB (IC50: 8 12 nM).

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

Entrectinib (RXDX-101) is a Trk, ROS1, and ALK inhibitor that inhibits TrkA, TrkB, TrkC, ROS1, and ALK (IC50=1 3 5 12 7 nM) with oral activity and blood-brain-barrier penetration. Entrectinib exhibits both antitumor and CNS activity.

Belizatinib (TSR-011) is an effective, oral and dual inhibitor of ALK (IC50: 0.7 nM, wild-type recombinant ALK) and TRKA, TRKB, and TRKC.

CE-245677 is a potent, reversible inhibitor of Tie2 and TrkA B kinases, with cellular IC50 values of 4.7 nM and 1 nM, respectively.

RIPK1-IN-7 is a potent and selective inhibitor of RIPK1 (Kd of 4 nM and enzymatic IC50 of 11 nM), exhibiting excellent antimetastasis activity in the experimental B16 melanoma lung metastasis model.

TrkA-IN-1 is a potent and selective inhibitor of Tropomyosin-related kinase A (TrkA) [IC50: 99 nM in a cell-based assay] with analgesic activity.

TRK II-IN-1 is a potent type II inhibitor of tropomyosin receptor kinases (TRK), with IC50 values of 3.3, 6.4, 4.3, and 9.4 nM against TRKA, TRKB, TRKC, and the mutant TRKA G667C, respectively. It also exhibits IC50 values of 1.3 nM against FLT3, 9.9 nM against RET, and 71.1 nM against VEGFR2. TRK II-IN-1 primarily serves as a research tool for studying TRK-driven cancers [1].

TRK-IN-28 (compound 30f) functions as a TRK inhibitor, displaying potencies with IC 50 values of 0.55 nM for TRK WT, 25.1 nM for TRK G595R, and 5.4 nM for TRK G667C. Another TRK inhibitor, TRK-IN-2, exhibits antiproliferative effects with IC 50 values against multiple cell lines: 9.5 nM for Ba F3-ETV6-TRKA WT, 3.7 nM for Ba F3-ETV6-TRKB WT, 205.0 nM for Ba F3-LMNA-TRK G595R, and 48.3 nM for Ba F3-LMNA-TRKA G667C [1].

IGF-1Rmodulator 1 (Example 5) is an IGF-1R modulator featuring an EC50 of 0.29 μM (FGFR1), 0.25 μM (IGF1R), 0.34 μM (TrkA), and 0.39 μM (TrkB). This compound is useful in research on diseases characterized by impaired signaling of neurotrophic and or other trophic factors, such as Alzheimer’s disease.

PF-06733804 is a potent inhibitor of pan-Trk in cell-based assays (IC50s: 8.4 nM, 6.2 nM, and 2.2 nM for TrkA, TrkB, and TrkC) with anti-hyperalgesic effect.

Ganglioside GM1is a monosialylated ganglioside and the prototypic ganglioside for those containing one sialic acid residue.1,2It is found in a large variety of cells, including immune cells and neurons, and is enriched in lipid rafts in the cell membrane.3It associates with growth factor receptors, including TrkA, TrkB, and the GDNF receptor complex containing Ret and GFRα, and is required for TrkA expression on the cell surface. Ganglioside GM1interacts with other proteins to increase calcium influx, affecting various calcium-dependent processes, including inducing neuronal outgrowth during differentiation. Ganglioside GM1acts as a receptor for cholera toxin, which binds to its oligosaccharide group, facilitating toxin cell entry into epithelial cells of the jejunum.4,5Similarly, it is bound by the heat-labile enterotoxin fromE. coliin the pathogenesis of traveler's diarrhea.6Ganglioside GM1gangliosidosis, characterized by a deficiency in GM1-β-galactosidase, the enzyme that degrades ganglioside GM1, leads to accumulation of the gangliosides GM1and GA1in neurons and can be fatal in infants.1Levels of ganglioside GM1are decreased in the substantia nigra pars compacta in postmortem brain from patients with Parkinson's disease.3Ganglioside GM1mixture contains a mixture of ovine ganglioside GM1molecular species with primarily C18:0 fatty acyl chain lengths, among various others. [Matreya, LLC. Catalog No. 1544] 1.Kolter, T.Ganglioside biochemistryISRN Biochem.506160(2012) 2.Mocchetti, I.Exogenous gangliosides, neuronal plasticity and repair, and the neurotrophinsCell Mol. Life Sci.62(19-20)2283-2294(2005) 3.Ledeen, R.W., and Wu, G.The multi-tasked life of GM1 ganglioside, a true factotum of natureTrends Biochem. Sci.40(7)407-418(2015) 4.Turnbull, W.B., Precious, B.L., and Homans, S.W.Dissecting the cholera toxin-ganglioside GM1 interaction by isothermal titration calorimetryJ. Am. Chem. Soc.126(4)1047-1054(2004) 5.Blank, N., Schiller, M., Krienke, S., et al.Cholera toxin binds to lipid rafts but has a limited specificity for ganglioside GM1Immunol. Cell Biol.85(5)378-382(2007) 6.Minke, W.E., Roach, C., Hol, W.G., et al.Structure-based exploration of the ganglioside GM1 binding sites of Escherichia coli heat-labile enterotoxin and cholera toxin for the discovery of receptor antagonistsBiochemistry38(18)5684-5692(1999)

CH7057288 is an effective and selective TRK inhibitor with an IC50 value of 1.1 nM, 7.8 nM and 5.1 nM for TRKA, TRKB and TRKC, respectively.

AZ-23 is an inhibitor of ATP-competitive and Trk kinase A B C. For TrkA, TrkB, FGFR1, Flt3, Ret, MuSk, Lck, the IC50s values are 2 nM, 8 nM, 24 nM, 52 nM, 55 nM, 84 nM, 99 nM, respectively.

Dual IGF-1R/InsR Inhibitor BMS-754807 is an oral small molecule inhibitor of insulin-like growth factor 1 receptor (IGF-1R) and insulin receptor (InsR) tyrosine kinases with potential antineoplastic activity.

Pan-Trk-IN-3 is a potent, broad-spectrum inhibitor of Trk and its drug-resistant mutants, acting on TrkA (IC50: 2 nM), TrkB (IC50: 3 nM), TrkC (IC50: 2 nM), TrkAG595R (IC50: 21 nM), TrkAG667C (IC50: 26 nM), TrkAG667S (IC50: 5 nM), TrkAF589L (IC50: 7 nM) and TrkCG623R (IC50: 6 nM), TrkAG667S (IC50: 5 nM), TrkAF589L (IC50: 7 nM) and TrkCG623R (IC50: 6 nM). Pan-Trk-IN-3 induces apoptosis and has significant anti-tumour effects.

PF-06737007 is an effective inhibitor of pan-Trk in cell-based assays (IC50s: 7.7 nM, 15 nM, and 3.9 nM for TrkA, TrkB, and TrkC, respectively).

Trk-IN-20 is a 3-vinylindazole derivative compound that effectively inhibits the functions of Trk kinases. It accomplishes this by suppressing the phosphorylation of TrkA, TrkB, and TrkC, with IC50 values of 1.6 nM, 2.9 nM, and 2.0 nM, respectively [1].

TrkA-IN-3 is a potent, subselective, and allosteric inhibitor of TrkA with an IC50 of 22.4 nM, demonstrating over 8000-fold selectivity towards TrkA compared to TrkB and TrkC, making it valuable for pain research.

Trk-IN-7 (compound I-6) is a highly potent TRK inhibitor, with IC50 values of 0.25-10 nM for TRKA, TRKB, and TRKC, respectively. It also shows significant inhibition of EML4-ALK (IC50 <15 nM) and ALK mutations G1202R, C1156Y, R1275Q, F1174L, L1197M, and G1269A (IC50 = 5-50 nM) [1].

Sitravatinib malate is an orally bioavailable receptor inhibitor of tyrosine kinase (RTK) (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.) , shows potent single-agent antitumor efficacy and enhances the activity of PD-1 blockade through promoting an antitumor immune microenvironment.

Taletrectinib (AB-106) is a new-generation selective inhibitor of ROS1/NTRK including ROS1,NTRK1,NTRK2 and NTRK3 with IC50 of 0.207 nM,0.622 nM,2.28 nM and 0.980 nM, respectively.