2. Signalwege
  3. Neuronal Signaling
    Protein Tyrosine Kinase/RTK
  4. Trk Receptor
  5. TrkA Isoform

TrkA

TrkA (tropomyosin receptor kinase A; encoded by NTRK1) is a high-affinity receptor tyrosine kinase for nerve growth factor (NGF) that regulates neuronal survival, differentiation, and sensory neuron function through ligand-induced receptor dimerization and autophosphorylation[1][2]. Mechanistically, NGF-TrkA signaling activates major downstream pathways including RAS/MAPK, PI3K/AKT, and PLCγ, thereby controlling transcriptional programs that support neuronal growth, maintenance, and synaptic function[1][2][3]. Through these signaling cascades, TrkA plays a central role in the development and maintenance of nociceptive neurons and contributes to neurotrophin-dependent cellular responses in the peripheral and central nervous systems[1][2]. In disease contexts, dysregulation of NGF/TrkA signaling has been implicated in chronic pain disorders and neurodegenerative conditions, including experimental models of Alzheimer's disease in which impaired TrkA signaling is associated with cholinergic neuronal dysfunction and synaptic deficits[3][4][5]. Compared with related neurotrophin receptors, TrkA is distinguished by its preferential activation by NGF, whereas TrkB primarily responds to BDNF and NT-4/5 and TrkC is activated predominantly by NT-3, enabling receptor-specific biological outcomes[6]. For experimental applications, both agonists and antagonists targeting the NGF-TrkA axis have been widely utilized to investigate neurotrophic signaling, neuronal survival mechanisms, and pain-related pathways, making TrkA an important molecular target in translational neuroscience research[4][5].

TrkA Verwandte Produkte (74):

Art. -Nr. Produktname Wirkung Reinheit
  • HY-112436
    PF-6683324
    		Inhibitor 99.41%
    PF-6683324 (Trk-IN-4) is a potent pan-Trk inhibitor in cell-based assays with IC50s of 1.9 nM, 2.6 nM and 1.1 nM for TrkA, TrkB and TrkC, respectively. Anti-hyperalgesic effect.
  • HY-122616
    PF-06273340
    		Inhibitor 98.8%
    PF-06273340 is a peripherally restricted pan-Trk inhibitor with IC50 values of 6, 4, 3 nM for TrkA, TrkB, and TrkC receptors. PF-06273340 binds in a DFG-out conformation, targeting less conserved kinase ligand binding domain regions outside the ATP binding pocket. PF-06273340 exhibits anti-hyperalgesic and analgesic effects. PF-06273340 can be used for the research of pain.
  • HY-151948
    TrkA-IN-3
    		Inhibitor 98.01%
    TrkA-IN-3 is a potent, subselective and allosteric TrkA inhibitor, with an IC50 of 22.4 nM. TrkA-IN-3 shows more than 8000-fold selectivity for TrkA over TrkB and TrkC. TrkA-IN-3 can be used for the research of pain.
  • HY-B0527AR
    Amitriptyline hydrochloride (Standard)
    		Agonist
    Amitriptyline hydrochloride (Standard) is the analytical standard of Amitriptyline hydrochloride (HY-B0527A). This product is intended for research and analytical applications. Amitriptyline hydrochloride is an orally active tricyclic antidepressant (TCA). Amitriptyline hydrochloride mainly exerts its antidepressant effect by blocking SERT (Ki = 3.45 nM) and NET (Ki = 13.3 nM), thereby increasing the concentrations of 5-hydroxytryptamine (5-HT) and norepinephrine (NE) in the synaptic cleft. Amitriptyline hydrochloride is also an agonist at α2A and TrkA/TrkB receptors, thereby exerting analgesic and neurotrophic activities (inhibiting cell apoptosis). Amitriptyline hydrochloride can reduce inflammation, angiogenesis and fibrosis. Amitriptyline hydrochloride binds to DAT (with Ki = 2.58 μM). Amitriptyline hydrochloride has high affinity for a series of receptors and can antagonize muscarinic cholinergic receptors (M1/M2/M3/M4/M5 receptors) (Ki = 11-24 nM), H1 receptors (Ki = 0.5-1.1 nM), adrenergic α1 receptors (Ki = 4.4 nM), etc., resulting in a series of side effects. Amitriptyline hydrochloride can block sodium channels and hERG potassium channel (IC50 = 4.78 μM) and it has cardiotoxicity.
  • HY-148811
    Zurletrectinib
    		Inhibitor 99.32%
    Zurletrectinib is a brain-penetrant, orally active TRK inhibitor (TRKA IC50 = 0.81 nM; TRKB IC50 = 0.145 nM; TRKC IC50 = 0.184 nM). Zurletrectinib exhibits stronger activity as a consequence of its augmented binding affinity for TRK kinases. Zurletrectinib exhibits higher activity against most TRK inhibitor resistance mutations (13 out of 18 mutations). Zurletrectinib can be used for the study of glioma.
  • HY-145587
    Paltimatrectinib
    		Inhibitor 99.95%
    Paltimatrectinib (compound I-147) is a potent tyrosine kinase inhibitor with an IC50 of <10 nM for tropomyosin kinases A (TrkA). Paltimatrectinib has the potential for cancer and inflammatory diseases.
  • HY-137465
    CG428
    		Degrader 98.26%
    CG428 is a potent and selective CRBN-dependent tropomyosin receptor kinase (TRK) PROTAC degrader that has anti-tumor activity. CG428 reduces levels of the tropomyosin 3 TPM3-TRKA fusion protein in KM12 colorectal carcinoma cells (DC50 = 0.36 nM) and inhibits downstream PLCγ1 phosphorylation (IC50 = 0.33 nM). CG428 has a higher binding affinity for TRKA than TRKB and TRKC (Kd = 1 nM, 28 nM and 4.2 nM, respectively). CG428 can be used for the research of colorectal carcinoma.
  • HY-151949
    TrkA-IN-4
    		Inhibitor 98.99%
    TrkA-IN-4, a potent, orally active and allosteric TrkA inhibitor, is a proagent of TrkA-IN-3 (IC50=22.4 nM, HY-151948). TrkA-IN-4 exhibits potent antinociceptive effects.
  • HY-112437
    PF-06737007
    		Inhibitor 99.90%
    PF-06737007 is a potent pan-Trk inhibitor in cell-based assays with IC50s of 7.7 nM, 15 nM and 3.9 nM for TrkA, TrkB and TrkC, respectively. Anti-hyperalgesic effect.
  • HY-114357A
    DS-1205b free base
    		Inhibitor 99.92%
    DS-1205b free base is a potent and selective inhibitor of AXL kinase, with an IC50 of 1.3 nM. DS-1205b free base also inhibits MER, MET, and TRKA, with IC50s of 63, 104, and 407 nM, respectively. DS-1205b free base can inhibit cell migration in vitro and tumor growth in vivo.
  • HY-109194
    Udonitrectag
    		Ligand 98.81%
    Udonitrectag (REC 0559) is a nerve growth factor peptide mimetic and a TrkA receptor binder. Udonitrectag binds to the TrkA receptor, thereby mimicking anti-Apoptotic activity and corneal trophic activity. Udonitrectag promotes the healing of corneal epithelium and stroma. Udonitrectag is applicable to research related to neurotrophic keratitis.
  • HY-129634
    TrkA-IN-1
    		Inhibitor
    TrkA-IN-1 is a potent and selective Tropomyosin-related kinase A (TrkA) inhibitor with an IC50 of 99 nM in a cell-based assay. TrkA-IN-1 has analgesic activity.
  • HY-112423
    CE-245677
    		Inhibitor 98.00%
    CE-245677 is a potent reversible inhibitor of Tie2 and TrkA/B kinases with a cellular IC50s of 4.7 and 1 nM.
  • HY-P991622
    MNAC13
    		Inhibitor
    MNAC13 is a kind of mouse IgG1 chimeric antibody, targeting to human TrkA. MNAC13 inhibits the NGF dependent signaling pathway by specifically binding to TrkA receptors. MNAC13 has good analgesic effect and long-lasting efficacy. MNAC13 can be used for researches on inflammatory and chronic pain.
  • HY-149912
    CZS-241
    		Inhibitor
    CZS-241 is an orally active and selective inhibitor of Polo-like Kinase (PLK) 4 (IC50=2.6 nM). CZS-241 inhibits TRKA with an IC50 value of 2.74 μM. CZS-241 induces apoptosis and arrests cell cycle at S/G2 phase. CZS-241 shows highly potent antiproliferative activity against leukemia cell lines, and exhibits safety against normal cell lines.
  • HY-16961A
    Sitravatinib malate
    		Inhibitor
    Sitravatinib malate (MGCD516 malate) is an orally bioavailable receptor tyrosine kinase (RTK) inhibitor with 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. Sitravatinib malate shows potent single-agent antitumor efficacy and enhances the activity of PD-1 blockade through promoting an antitumor immune microenvironment.
  • HY-132229
    LPM4870108
    		Inhibitor
    LPM4870108 is a potent and orally active pan-Trk (WT and MT) inhibitor, with IC50s of 0.2 nM, 2.4 nM, 3.5 nM and 2.3 nM for TrkC, TrkA, TrkAG595R and TrkAG667C, respectively. LPM4870108 shows selectivity for Trk over ALK (IC50=182 nM). LPM4870108 exhibits anti-tumor activity.
  • HY-146749
    FLT3/TrKA-IN-1
    		Inhibitor
    FLT3/TrKA-IN-1 is a potent FLT3/TrKA dual kinase inhibitor with the IC50s of 43.8 nM, 97.2 nM, 92.5 nM and 23.6 nM for FLT3, FLT3-ITD, FLT3-TKD and TrKA, respectively. FLT3/TrKA-IN-1 induces cell cycle arrest at the G0/G1 phase as well as apoptosis and shows antiproliferative activity in vitro. FLT3/TrKA-IN-1 has the potential for the research of Acute myeloid leukemia (AML).
  • HY-176942
    JYP0322
    		Inhibitor
    JYP0322 (ROS1-IN-3) is a potent orally active, selective, and CNS-penetrant ROS1 inhibitor. JYP0322 selectively inhibits human wild-type ROS1 and human ROS1G2032R with IC50s of 0.37 and 0.3 nM, respectively, showing 6-130-fold selectivity over TRKA, TRKB, and TRKC. JYP0322 inhibits proliferation of ROS1 fusion-expressing cells, and inhibits tumor growth in mouse xenograft models. JYP0322 can be used for the research of non-small cell lung cancer (NSCLC).
  • HY-112434
    PF-06733804
    		Inhibitor
    PF-06733804 is a potent pan-Trk inhibitor in cell-based assays with IC50s of 8.4 nM, 6.2 nM and 2.2 nM for TrkA, TrkB and TrkC, respectively. Anti-hyperalgesic effect.
Art. -Nr. Produktname / Synonyms Application Reactivity