2. Signaling Pathways
  3. Protein Tyrosine Kinase/RTK
  4. Syk

Syk

Spleen tyrosine kinase

Syk

Related Products

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Syk (Spleen tyrosine kinase) is a cytosolic non-receptor protein tyrosine kinase (PTK) that is expressed at high levels, both in hematopoietic cells (such as mast cells, B lymphocytes, T lymphocytes, neutrophils, dendritic cells, and macrophages) and in non-hematopoietic cells.

Syk mediates key signal transduction pathways following the activation of immune cell receptors. Syk associates with different receptors on the surface of various cells such as B cells, mast cells, monocytes, macrophages, and neutrophils, and even osteoclasts and breast cancer cells. Following the engagement of these receptors with their ligands, SYK is activated and orchestrates diverse cellular responses, including cytokine production (in T cells and monocytes) and phagocytosis (in macrophages).

Syk Related Products (89):

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-12067
    R406
    		Inhibitor
    R406 is an orally available and competitive Syk/FLT3 inhibitor for ATP binding with a Ki of 30 nM, potently inhibits Syk kinase activity in vitro with an IC50 of 41 nM, measured at an ATP concentration corresponding to its Km value. R406 reduces immune complex-mediated inflammation. R406 also inhibits Lyn (IC50=63 nM) and Lck (IC50=37 nM).
    R406
  • HY-13038A
    Fostamatinib
    		Inhibitor 99.70%
    Fostamatinib (R788) is the oral proagent of the active compound R406. R406 is an orally available and competitive Syk/FLT3 inhibitor with a Ki of 30 nM and an IC50 of 41 nM. R406 also inhibits Lyn (IC50=63 nM) and Lck (IC50=37 nM).
    Fostamatinib
  • HY-13518
    Piceatannol
    		Inhibitor 98.97%
    Piceatannol is a well-known Syk inhibitor and reduces the expression of iNOS induced by TNF. Piceatannol is an effective agent for research of acute lung injury (ALI). Piceatannol is a naturally occurring polyphenolic stilbene found in various fruits and vegetables and exhibits anticancer and anti-inflammatory properties. Piceatannol induces apoptosis in DLBCL cell lines. Piceatannol induces autophagy and apoptosis in MOLT-4 human leukemia cells.
    Piceatannol
  • HY-15968
    Entospletinib
    		Inhibitor 99.49%
    Entospletinib (GS-9973) is an orally bioavailable, selective Syk inhibitor with an IC50 of 7.7 nM.
    Entospletinib
  • HY-15322
    PRT062607
    		Inhibitor 99.38%
    PRT062607 (P505-15; PRT-2607) is an orally active ATP-competitive Syk inhibitor with an IC50 value of 1 nM, and exhibits at least 80-fold selectivity over other kinases. PRT062607 blocks B cell antigen receptor-mediated activation, Fcε receptor 1-mediated basophil degranulation and microglial phagocytosis, and induces caspase-dependent apoptosis and microglial death. PRT062607 inhibits tumor growth and peripheral nerve injury-induced mechanical allodynia, and prevents neuronal loss. PRT062607 can be used in research related to rheumatoid arthritis, chronic lymphocytic leukemia, non-Hodgkin's lymphoma, neurodegenerative diseases and neuropathic pain.
    PRT062607
  • HY-12974A
    PRT-060318 dihydrochloride
    		Inhibitor 98.98%
    PRT-060318 (PRT318) dihydrochloride is a potent, selective and orally active tyrosine kinase Syk inhibitor with an IC50 of 3 nM. PRT-060318 dihydrochloride suppresses chronic lymphocytic leukemia (CLL) B cell activation and migration, and induces apoptosis. PRT-060318 dihydrochloride prevents Heparin (HY-17567)-induced thrombocytopenia and thrombosis in a transgenic mouse model. PRT-060318 dihydrochloride can be used for CLL and thrombus research.
    PRT-060318 dihydrochloride
  • HY-182702
    As48
    		Activator
    As48 is a selective TREM2 agonist with a KD value of 12.48 μM in TRIC binding assay. As48 binds near the TREM2 cleavage region, forms hydrogen bonds with Gly68, reduces conformational flexibility in regions 58-102, restricts protease accessibility to the cleavage site. As48 activates SYK phosphorylation, enhances microglial phagocytosis, and induces downstream calcium signaling in TREM2-expressing cells. As48 inhibits TREM2 ectodomain shedding without affecting ADAM10/17 protease activities. As48 can be used for the research of Alzheimer's disease.
    As48
  • HY-181546
    Ibt-DOX
    		Control
    Ibt-DOX is a BTK inhibitor with an IC50 of 2.89 nM. Ibt-DOX is also a targeted covalent activated chemotherapeutic agent composed of the targeting ligand Ibrutinib (HY-10997), Doxorubicin (DOX) (HY-15142A), α-MAA (HY-W017180), and a linker (HY-Y0892). Ibt-DOX specifically binds to BTK and releases DOX, synergistically achieving BTK inhibition and chemotherapeutic killing, significantly enhancing toxicity against B-cell lymphoma cells and greatly reducing the toxic side effects of DOX on BTK-negative cells. Ibt-DOX can be used in lymphoma-related research.
    Ibt-DOX
  • HY-15999
    Cerdulatinib
    		Inhibitor 99.06%
    Cerdulatinib (PRT062070) is a selective Tyk2 inhibitor with an IC50 of 0.5 nM. Cerdulatinib (PRT062070) also is a dual JAK and SYK inhibitor with IC50s of 12, 6, 8 and 32 for JAK1, 2, 3 and SYK, respectively.
    Cerdulatinib
  • HY-15323
    PRT062607 Hydrochloride
    		Inhibitor 98.07%
    PRT062607 (P505-15) Hydrochloride is an orally available Syk inhibitor (IC50: 1 nM) that inhibits inflammation and induction Apoptosis. PRT062607 Hydrochloride exerts potent antitumor activity in tumor xenograft mouse models.
    PRT062607 Hydrochloride
  • HY-11108
    R406 free base
    		Inhibitor 99.07%
    R406 free base is an orally available and competitive Syk/FLT3 inhibitor for ATP binding with a Ki of 30 nM, potently inhibits Syk kinase activity in vitro with an IC50 of 41 nM, measured at an ATP concentration corresponding to its Km value. R406 free base reduces immune complex-mediated inflammation. R406 free base also inhibits Lyn (IC50=63 nM) and Lck (IC50=37 nM).
    R406 free base
  • HY-14985
    BAY 61-3606 dihydrochloride
    		Inhibitor 99.45%
    BAY 61-3606 dihydrochloride is an orally available, ATP-competitive, reversible and highly selective Syk inhibitor with a Ki of 7.5 nM an IC50 of 10 nM. BAY 61-3606 dihydrochloride reduces ERK1/2 and Akt phosphorylation in neuroblastoma cell. BAY 61-3606 dihydrochloride induces a large decrease of Syk phosphorylation in K-rn cell lysates. Bay 61-3606 dihydrochloride sensitizes TRAIL-induced apoptosis by downregulating Mcl-1 in breast cancer cells.
    BAY 61-3606 dihydrochloride
  • HY-103018
    Gusacitinib
    		Inhibitor 99.63%
    Gusacitinib (ASN-002) is an orally active dual SYK/JAK kinase inhibitor with IC50 values of 5, 46, 4, 11 and 8 nM for SYK, JAK1, JAK2, JAK3 and TYK2, respectively. Gusacitinib rapidly and significantly suppressed key inflammatory pathways implicated in atopic dermatitis pathogenesis. Gusacitinib can be used in the research of chronic hand eczema and cancers such as basal cell carcinoma.
    Gusacitinib
  • HY-100867A
    Mivavotinib monohydrochloride
    		Inhibitor 99.91%
    TAK-659 hydrochloride is a highly potent, selective, reversible and orally available dual inhibitor of spleen tyrosine kinase (SYK) and fms related tyrosine kinase 3 (FLT3), with an IC50 of 3.2 nM and 4.6 nM for SYK and FLT3, respectively. TAK-659 hydrochloride induces cell death in tumor cells but not in nontumor cells, and with potential for the treatment of chronic lymphocytic leukemia (CLL).
    Mivavotinib monohydrochloride
  • HY-145598
    Sovleplenib
    		Inhibitor 99.94%
    Sovleplenib (HMPL-523) is a highly potent, orally available and selective SYK inhibitor with an IC50 of 25 nM. Anti-tumor activity. Sovleplenib can be used for the research of immune thrombocytopenia (ITP).
    Sovleplenib
  • HY-109091
    Lanraplenib
    		Inhibitor 99.13%
    Lanraplenib (GS-9876) is a highly selective and orally active SYK inhibitor (IC50=9.5 nM) in development for the treatment of inflammatory diseases. Lanraplenib (GS-9876) inhibits SYK activity in platelets via the glycoprotein VI (GPVI) receptor without prolonging bleeding time (BT) in monkeys or humans.
    Lanraplenib
  • HY-12974
    PRT-060318
    		Inhibitor 99.59%
    PRT-060318 (PRT318) s a potent, selective and orally active tyrosine kinase Syk inhibitor with an IC50 of 3 nM. PRT-060318 suppresses chronic lymphocytic leukemia (CLL) B cell activation and migration, and induces apoptosis. PRT-060318 prevents Heparin (HY-17567)-induced thrombocytopenia and thrombosis in a transgenic mouse model. PRT-060318 dihydrochloride can be used for CLL and thrombus research.
    PRT-060318
  • HY-N0805
    Alisol B 23-acetate
    		Inhibitor 99.65%
    Alisol B 23-acetate is an orally active prototerpane-type triterpenoid. Alisol B 23-acetate can be isolated from Alisma orientalis. Alisol B 23-acetate induces Apoptosis, promotes ROS generation, downregulates CDK4/6, MMP-2/9, upregulates cleaved PARP, activates FXR and inhibits Syk. Alisol B 23-acetate has anti-inflammatory and hepatoprotective activities. Alisol B 23-acetate protects the kidney from ischemia-reperfusion injury. Alisol B 23-acetate has anticancer activity against ovarian cancer, colon cancer, lung cancer, and gastric cancer. Alisol B 23-acetate can be used in the study of atherosclerosis and allergic asthma.
    Alisol B 23-acetate
  • HY-78263
    MNS
    		Inhibitor 99.55%
    MNS (NSC 170724), the beta-nitrostyrene derivative, is an orally active tyrosine kinase inhibitor, a broad-spectrum antiplatelet agent, and a PANoptosis inhibitor. MNS inhibits Src, Syk, and FAK with IC50 of 27.3, 2.8, and 97.6 μM, respectively. MNS inhibits NLRP3 inflammasome and β1 integrin. MNS completely inhibits U46619, ADP-, arachidonic acid-, collagen-, and thrombin-induced platelet aggregation with IC50 values of 2.1, 4.1, 5.8, 7.0, and 12.7 μM, respectively. MNS is cytotoxic to a variety of cells.
    MNS
  • HY-N7675
    Flavanomarein
    		Inhibitor 99.92%
    Flavanomarein is a substance with cytoprotective, anti-inflammatory and antioxidant activities, with a Ka of 3.064e-5 M against human Syk. Flavanomarein enhances the phosphorylation level of AKT, regulates the expression of PKC-δ, P85α, PKC-β1, Sirt1, Bcl-2 and ICAD, and inhibits the nuclear translocation of NF-κB p65. Flavanomarein regulates EMT marker proteins, promotes the proliferation of HK-2 cells, and protects neuronal cells from 6-OHDA-induced neurotoxic damage. Flavanomarein can be used in studies related to Parkinson's disease and diabetic nephropathy.
    Flavanomarein