Jin-Wook Kim, Yong-Woo Kim, Yuichi Inagaki, You-A Hwang, Susumu Mitsutake, Yeon-Woo Ryu, Won Koo Lee, Hyun-Joon Ha, Chang-Seo Park and Yasuyuki Igarashi

 

 

Sphingosine 1-phosphate (S1P), a product of sphingosine kinases (SphK), mediates diverse biological processes such as cell differentiation, proliferation, motility, and apoptosis. In an effort to search and identify specific inhibitors of human SphK, the inhibitory effects of synthetic sphingoid analogs on kinase activity were examined. Among the analogs tested, we found two, SG12 and SG14, that have specific inhibitory effects on hSphK2. N,N-Dimethylsphingosine (DMS), a well-known SphK inhibitor, displayed inhibitory effects for both SphK1 and SphK2, as well as protein kinase C. In contrast, SG12 and SG14 exhibited selective inhibitory effects on hSphK2. Furthermore, SG14 did not affect PKC. In isolated platelets, SG14 blocked the conversion of sphingosine into sphingosine 1-phosphate significantly. This is the first report on the identification of a hSphK2-specific inhibitor, which may provide a useful tool for studying the biological functions of hSphK2.

 

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List of Articles
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72 57. Preparation of enantiopure 2-acylazetidines and their reactions with chloroformates - Tetrahedron Lett. 2007 48 269-271 imagefile aziridine 2010-05-17 3880
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70 62. Molecular docking study of aminoacyl-tRNA synthetases with ligand molecules from four different scaffolds - Bull.Kor.Chem.Soc 2010, 606 imagefile aziridine 2010-05-29 3848
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68 46. Cyclo(Phe-Pro) Modulates the Expression of ompU in Vibrio spp. - Journal of Bacteriology 2006, 188, 6, 2214 imagefile aziridine 2010-05-12 3792
67 56. Selective reduction of C-C double bonds of 2-vinylaziridines:preparation of enantiomerically pure 2-alkylaziridines - Bull. Kor. Chem. Soc. 2009, 3123 imagefile aziridine 2010-05-12 3786
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