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

Syk

Spleen tyrosine kinase

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 (64):

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-76474
    BAY 61-3606
    Inhibitor 98.21%
    BAY 61-3606 is an orally available, ATP-competitive, reversible and highly selective Syk inhibitor with a Ki of 7.5 nM and an IC50 of 10 nM. BAY 61-3606 reduces ERK1/2 and Akt phosphorylation in neuroblastoma cell. BAY 61-3606 induces a large decrease of Syk phosphorylation in K-rn cell lysates. Bay 61-3606 sensitizes TRAIL-induced apoptosis by downregulating Mcl-1 in breast cancer cells.
    BAY 61-3606
  • HY-100867
    Mivavotinib
    Inhibitor
    TAK-659 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 induces cell death in tumor cells but not in nontumor cells, and with potential for the treatment of chronic lymphocytic leukemia (CLL).
    Mivavotinib
  • HY-109091A
    Lanraplenib monosuccinate
    Inhibitor
    Lanraplenib monosuccinate (GS-9876 monosuccinate) is a highly selective and orally active SYK inhibitor (IC50=9.5 nM) in development for the treatment of inflammatory diseases. Lanraplenib monosuccinate (GS-9876 monosuccinate) inhibits SYK activity in platelets via the glycoprotein VI (GPVI) receptor without prolonging bleeding time (BT) in monkeys or humans.
    Lanraplenib monosuccinate
  • HY-130680
    Syk-IN-3
    Inhibitor
    Syk-IN-3, a potent spleen tyrosine kinase (Syk) inhibitor, extracted from patent WO2011075515A1, compound example 152, has an IC50 of 1 nM.
    Syk-IN-3
  • HY-103018A
    Gusacitinib hydrochloride
    Inhibitor
    Gusacitinib (ASN-002) hydrochloride 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 hydrochloride rapidly and significantly suppressed key inflammatory pathways implicated in atopic dermatitis pathogenesis. Gusacitinib hydrochloride can be used in the research of chronic hand eczema and cancers such as basal cell carcinoma.
    Gusacitinib hydrochloride
  • HY-P2504
    Syk Kinase Peptide Substrate, Biotin labeled
    Syk Kinase Peptide Substrate, Biotin labeled is a biotin-labled Syk kinase peptide substrate.
    Syk Kinase Peptide Substrate, Biotin labeled
  • HY-112319
    MK-8457
    Inhibitor
    MK-8457 is a dual SYK/ZAP70 inhibitor. MK-8457 can be used for research of rheumatoid arthritis.
    MK-8457
  • HY-N3702
    Dehydroabietinol
    Inhibitor
    Dehydroabietinol is an abietane diterpenoid. Dehydroabietinol has kinase inhibition activity for spleen tyrosine kinase (SYK) with an IC50 value of 46.4 μM. Dehydroabietinol can be used for the research of immune-mediated disease.
    Dehydroabietinol
  • HY-112390C
    Syk Inhibitor II hydrochloride
    Inhibitor
    Syk Inhibitor II hydrochloride is a potent, high selective and ATP-competitive Syk inhibitor with an IC50 of 41 nM. Syk Inhibitor II hydrochloride inhibits 5-HT release from RBL-cells with an IC50 of 460 nM. Syk Inhibitor II hydrochloride shows less potent against other kinases and has anti-allergic effect.
    Syk Inhibitor II hydrochloride
  • HY-12736
    GSK143
    Inhibitor
    GSK143 is an orally active and highly selective spleen tyrosine kinase (SYK) inhibitor with a pIC50 of 7.5. GSK143 inhibits phosphorylated Erk (pErk: pIC50=7.1). GSK143 reduces inflammation and prevents recruitment of immune cells in the intestinal muscularis in mice.
    GSK143
  • HY-P2505
    Syk Kinase Peptide Substrate
    Syk Kinase Peptide Substrate is a Syk kinase peptide substrate.
    Syk Kinase Peptide Substrate
  • HY-112390
    Syk Inhibitor II dihydrochloride
    Inhibitor
    Syk Inhibitor II dihydrochloride is a potent, high selective and ATP-competitive Syk inhibitor with an IC50 of 41 nM. Syk Inhibitor II dihydrochloride inhibits 5-HT release from RBL-cells with an IC50 of 460 nM. Syk Inhibitor II dihydrochloride shows less potent against other kinases and has anti-allergic effect.
    Syk Inhibitor II dihydrochloride
  • HY-120214
    TAS05567
    Inhibitor
    TAS05567 is a potent, highly selective, ATP-competitive and orally active Syk inhibitor with an IC50 of 0.37 nM. In a panel of 192 kinases, TAS05567 only shows >70% inhibition of Syk and 4 other kinases (FLT3, JAK2, VEGFR2/KDR/Flk-1 and RET with IC50s of 10 nM, 4.8 nM, 600 nM and 29 nM, respectively). TAS05567 can be used for humoral immune-mediated inflammatory conditions such as autoimmune and allergic diseases.
    TAS05567
  • HY-155513
    Syk-IN-8
    Inhibitor
    Syk-IN-8 (compound 19q) is a Syk inhibitor, with antiproliferative activity against multiple hematological tumour cells. Syk-IN-8 inhibits PLCγ2 phosphorylation, can be used for research in blood cancers.
    Syk-IN-8
  • HY-112390B
    Syk Inhibitor II dihydrochloride dihydrate
    Inhibitor
    Syk Inhibitor II dihydrochloride dihydrate is a potent, high selective and ATP-competitive Syk inhibitor with an IC50 of 41 nM. Syk Inhibitor II dihydrochloride dihydrate inhibits 5-HT release from RBL-cells with an IC50 of 460 nM. Syk Inhibitor II dihydrochloride dihydrate shows less potent against other kinases and has anti-allergic effect.
    Syk Inhibitor II dihydrochloride dihydrate
  • HY-145029
    SYK/JAK-IN-1
    Inhibitor
    SYK/JAK-IN-1 is dual SYK/JAK inhibitor with IC50s of <5 nM for SYK and JAK2, respectively.
    SYK/JAK-IN-1
  • HY-149895
    Syk-IN-7
    Inhibitor
    Syk-IN-7 (compound 17) is an inhibitor of spleen tyrosine kinase (SYK).
    Syk-IN-7
  • HY-162427
    NMS-0963
    Inhibitor
    NMS-0963 (compound 1) is an inhibitor of spleen tyrosine kinase (SYK) with an oral activity and IC50 value of 3 nM. NMS-0963 inhibits BaF3-TEL/SYK cell line proliferative at 27 nM.
    NMS-0963
  • HY-124146
    BI1002494
    Inhibitor
    BI1002494 is an orally active, potent, and selective spleen tyrosine kinase (SYK) inhibitor. BI 1002494 exhibits an IC50 of 115 nM in inhibiting high-affinity IgE receptor-mediated mast cell and basophil degranulation. BI1002494 can be utilized in immunology reesearch.
    BI1002494
  • HY-160930
    TOP1288
    Inhibitor
    TOP1288 is a narrow spectrum kinase inhibitor for P38α, Src and Syk kinase, with IC50 of 116nM, 24nM and 659nM, respectively. TOP1288 inhibits inflammatory cytokine release from inflamed biopsies and myofibroblasts.
    TOP1288