clk1-in-3

CLK1-IN-3 是一种+具有选择性和高效的性 Clk1 抑制剂，其 IC50 为 5 nM，比对 Dyrk1A 的亲和力高300对倍。CLK1-IN-3 对 Clk2 和 Clk4 也显示出高效的抑制作用，IC50 值分别为 42 和 108 nM。CLK1-IN-3 在体外有效诱导自噬 (autophagy)，可用于预防和人治疗急性肝损伤 (ALI)。

DCLK1-IN-3 是一种有效且具选择性的双皮质素样激酶 1 (DCLK1) 抑制剂，IC50值为47 nM，可用于癌症研究。

CLK1/2-IN-3(Cpd-3) 是一种具有高效性和选择性的 CLK1 和 CLK2 抑制剂，抗增殖活性，抑制 CLK1、CLK2、SRPK1、SRPK2、SRPK3 的 的活性。CLK1/2-IN-3 可诱导核斑点扩大，可诱导S6K pre-mRNA选择性剪接和随后抑制多种癌细胞类型细胞生长。

CLK-IN-T3 是 CLK1、CLK2 和 CLK3 的抑制剂，IC50 为 0.67、15 和 110 nM。 CLK-IN-T3 具有抗癌活性。

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.