clk-1-in-1

CLK1-IN-1 is a potent and selective inhibitor of Cdc2-like kinase 1 (CLK1) with an IC50 of 2 nM.

CLK1 2-IN-3 (Cpd-3) is a potent and selective CLK1 and CLK2 inhibitor with antiproliferative activity and inhibits the activities of CLK1, CLK2, SRPK1, SRPK2, and SRPK3.CLK1 2-IN-3 induces nuclear speckle enlargement, which induces S6K pre-mRNA-selective splicing and subsequent inhibition of cell growth of multiple cancer cell types. cancer cell types cell growth.

CLK1 2-IN-1 is a CLK1 and CLK2 inhibitor and it also inhibits SRPK1 and SRPK2.

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.

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

Coenzyme Q8 (Ubiquinone 8) is an isoprenoid quinone isolated from the plasma membrane of wild-type or long-lived qm30 and qm51 clk-1 mutant strains of Cryptomeria cepacia that mediates electron transfer in the aerobic respiratory chain and reduces oxidative stress.