syk-in-4

Syk-IN-4 is a potent, selective, and orally bioavailable inhibitor of SYK, demonstrating an IC50 of 0.31 nM. It targets SYK, which has been identified as a potential therapeutic target for autoimmunity and hematological cancers[1].

Glaucocalyxin A (Leukamenin F) 是来自日本黑纹病菌的一种对映型月桂基二萜，具有抗肿瘤作用。它通过调节PI3K Akt 信号通路抑制 GLI1 的核易位，诱导骨肉瘤凋亡。

TAS05567 is a potent, highly selective, and ATP-competitive Syk inhibitor (IC50: 0.37 nM). TAS05567 only shows >70% inhibition of Syk and 4 other kinases (FLT3, JAK2, KDR, and RET with IC50s of 10 nM, 4.8 nM, 600 nM, and 29 nM, respectively) in a panel of 192 kinases.

Streptochlorin is a bacterial metabolite originally isolated from Streptomyces sp. SF2583 that has diverse biological activities, including antiangiogenic, antiproliferative, and anti-allergic properties. It inhibits TNF-α-induced NF-κB transcriptional activity and decreases proliferation of human umbilical vein endothelial cells (HUVECs) when used at concentrations ranging from 5 to 20 μM. Streptochlorin (12 μg/ml) decreases viability of, as well as induces apoptosis and increases the production of reactive oxygen species (ROS) in, Hep3B human hepatocellular carcinoma cells. It does not induce cytotoxicity in RBL-2H3 mast cells at concentrations up to 100 μM. Streptochlorin prevents degranulation in antigen-stimulated mast cells, as well as inhibits Syk kinase and the Src family kinases LYN and Fyn and reduces the secretion of TNF-α and IL-4 induced by dinitrophenyl-human serum album (DNP-HSA) in RBL-2H3 mast cells. It also decreases swelling and reduces scratching behavior in a mouse model of allergic dermatitis induced by dinitrofluorobenzene (DNFB).

Gusacitinib, also known as ASN-002 and EN-3351, is a potent dual inhibitor of SYK JAK kinases. ASN002 showed strong antitumor activity in both hematological and solid tumor xenograft models. ASN002 strongly suppressed the SYK and JAK family kinase signaling pathways as measured in pLAT and pSTAT assays, respectively. When profiled in a panel of 178 cell lines, ASN002 showed strong anti-proliferative activity in many lymphoid leukemia cell lines, including SU-DHL-6, SU-DHL-4, OCI-LY10, H929 and Pfeiffer.