clk3

CLK-IN-T3 is an inhibitor of CLK1, CLK2, and CLK3 with IC50s of 0.67, 15, and 110 nM. CLK-IN-T3 exhibits anti-cancer activity.

T025 is a pan CLK inhibitor with Kds of 4.8, 0.096, 6.5, 0.61, and 0.074 nM for CLK1-4, respectively. T025 displays anti-proliferative activities with IC50s of 30-300 nM in hematological and solid cancer cell lines. T025 can be used in studies about MYC-driven diseases.

PfCLK3-IN-1 (Compound 4) serves as a covalent inhibitor of the malaria parasite CLK3 (Pf CLK3) under alkaline conditions, with a pEC50 of 7.1. It inhibits the maturation of gametocytes during the sexual stage of the parasite, thereby hindering transmission. Additionally, PfCLK3-IN-1 effectively suppresses the Dd2-B2 clone of the malaria parasite, exhibiting an IC50 of 239.5 nM.

Ipivivint, a first-in-class, orally active and potent CDC-like kinase (CLK) inhibitor, inhibits CLK1 (IC50=1.4 μM), CLK2 (IC50=0.002 μM) and CLK3 (IC50=0.022 μM). Ipivivint reduces Wnt pathway signaling gene expression through inhibiting CLK activity and serine and arginine rich splicing factor (SRSF) phosphorylation and disrupting spliceosome activity. Ipivivint can be used for the research of cancer[1]. Ipivivint (SW480 cells; 0.01~10 μM; 1 hour) potently inhibits SRSF5/6 phosphorylation[1].Ipivivint (SW480 cells; 0.03 μM~3 μM; 48 hour) induced apoptosis[1]..Ipivivint (HEK-293T cells; 0.03 μM~3 μM; 1 hour) inhibits Wnt/β-catenin signaling induced by Wnt3a[1].Ipivivint (SW480 cells; 0.3~10 μM; 6 hour) increases nuclear speckle enlargement[1].Ipivivint (SW480 cells; 0.3~3μM; 24hours) significantly decreases expression of Wnt target genes (AXIN2, LEF1, MYC, and TCF7) and TCF7L2. SM08502 (SW480 cells; 0.03~3μM; 24hours) inhibits cytoplasmic or nuclear fractions protein expression. Ipivivint (NCI-N87 cells) inhibits proliferation[1].Ipivivint strongly inhibits Wnt pathway signaling activity (EC50 = 0.046 μM) in SW480 colon cancer cells[1]. Ipivivint (25 mg/kg; p.o.) potently inhibits tumor SRSF6 phosphorylation[1]. [1]. Tam BY, et al. The CLK inhibitor SM08502 induces anti-tumor activity and reduces Wnt pathway gene expression in gastrointestinal cancer models. Cancer Lett. 2020;473:186-197.

KH-CB20, an E Z mixture, is a potent and selective inhibitor of CLK1 and CLK4, with an IC50 of 16.5 nM for CLK1. KH-CB20 also inhibits DYRK1A (IC50 = 57.8 nM) and CLK3 (IC50 = 488 nM).

Leucettine L41 (LeucettineL41) is a selective DYRK1A inhibitor that inhibits DYRK2, CLK1, and CLK3, inducing autophagy linked to CLK inhibition. It is used to study Alzheimer's disease and memory deficits.

Potent and selective CLK inhibitor (IC50 values are 28, 88 and 510 nM for CLK4, 1 and 2, respectively). Exhibits no significant activity at CLK3, DYRK, CDK or GSK3 at a concentration of 10 μM. Inhibits growth of a range of cancer cell lines in vitro at subnanomolar concentrations. Walter et al (2018) Molecular structures of cdc2-like kinases in complex with a new inhibitor chemotype. PLoS One 13 e0196761 PMID:29723265

K 00546 is a potent inhibitor of cellular cyclin kinases (CDK1 and CDK2) and CDC2-like kinases (CLK1 and CLK3) used in the study of cancer and immune-related diseases.

ZJCK-6-46 (32) is a potential orally active DYRK1A inhibitor (IC50= 0.68 nM) with favorable CNC permeability. It downregulates tau phosphorylation and improves cognitive impairments by significantly reducing the expression of phosphorylated tau proteins and neuronal loss.

KH-CB19 is an effective and highly specific inhibitor of the CDC2-like kinase isoforms 1 and 4 (CLK1 CLK4).

Leucettinib-92 (compound 92) is a kinase inhibitor selective for the DYRK CLK families, with IC50 values of 147 nM for CLK1, 39 nM for CLK2, 5.2 nM for CLK4, 0.8 μM for CLK3, 124 nM for DYRK1A, 204 nM for DYRK1B, 0.16 μM for DYRK2, 1.0 μM for DYRK3, 0.52 μM for DYRK4, and 2.78 μM for GSK3 [1].