SKI-II is a selective non-lipid inhibitor of sphingosine kinase (IC50 = 0.5 μM). nhibits acute myelogenous leukemia cell growth in vitro and in vivo. SKI-II was more efficient than two known SphK1 inhibitors SK1-I and FTY720 in inhibiting AML cells. Meanwhile, it induced dramatic apoptosis in above AML cells, and the cytotoxicity by SKI-II was almost reversed by the general caspase inhibitor z-VAD-fmk. SKI-II treatment inhibited SphK1 activation, and concomitantly increased level of sphingosine-1-phosphate (S1P) precursor ceramide in AML cells.
CAS Number: 312636-16-1
Molecular Weight: 302.78
Chemical Name: 4-[[4-(4-Chlorophenyl)-2-thiazolyl]amino]phenol
Appearance: Solid Power.
Purity: ≥98% (or refer to the Certificate of Analysis)
Solubility: Soluble in DMSO, not in water
Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis
Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.
Shelf Life: ≥360 days if stored properly.
Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.
Drug Formulation: To be determined.
HS Tariff Code: 382200
How to use
SKI II inhibits cell proliferation by suppressing the Wnt/β-catenin signaling pathway. SKI II promotes the degradation of β-catenin by enhancing Wnt5A. SKI II (1.25 μM, 48 h) in combination with DDP has a clear synergistic effect in human gastric carcinoma SGC7901/DDP cell line.
Chronic SKI II (50.0 mg/kg, 3-weekly i.p. for 16 weeks) administration leads to permanent reduction of S1P concentrations in plasma in mice. SKI II (50.0 mg/kg, IP; 100 mg/kg, PO) treatment reduces tumor growth in mice bearing solid tumor model.
- Yang L, Weng W, Sun ZX, Fu XJ, Ma J, Zhuang WF. SphK1 inhibitor II (SKI-II) inhibits acute myelogenous leukemia cell growth in vitro and in vivo. Biochem Biophys Res Commun. 2015 May 15;460(4):903-8. doi: 10.1016/j.bbrc.2015.03.114. Epub 2015 Mar 28. PubMed PMID: 25824043.
- Li PH, Wu JX, Zheng JN, Pei DS. A sphingosine kinase-1 inhibitor, SKI-II, induces growth inhibition and apoptosis in human gastric cancer cells. Asian Pac J Cancer Prev. 2014;15(23):10381-5. PubMed PMID: 25556479.
- Liu Y, Zhu Z, Cai H, Liu Q, Zhou H, Zhu Z. SKI-II reverses the chemoresistance of SGC7901/DDP gastric cancer cells. Oncol Lett. 2014 Jul;8(1):367-373. Epub 2014 Apr 25. PubMed PMID: 24959278; PubMed Central PMCID: PMC4063656.
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