The natural marine anhydrophytosphingosine, Jaspine B, induces apoptosis in melanoma cells by interfering with ceramide metabolism

被引:96
作者
Salma, Yahya [2 ,3 ]
Lafont, Elodie [2 ]
Therville, Nicole [2 ]
Carpentier, Stephane [2 ]
Bonnafe, Marie-Jose [4 ]
Levade, Thierry [2 ,4 ]
Genisson, Yves [3 ]
Andrieu-Abadie, Nathalie [1 ,2 ]
机构
[1] INSERM, U858, Inst Med Mol Rangueil, F-31432 Toulouse 4, France
[2] Univ Toulouse 3, Inst Med Mol Rangueil, IFR31, F-31062 Toulouse, France
[3] Univ Toulouse 3, LSPCMIB, UMR 5068, F-31062 Toulouse, France
[4] CHU Toulouse, Lab Biochim Metab, Toulouse, France
关键词
Jaspine B; Ceramide; Sphingomyelin; Melanoma; Apoptosis; CYTOTOXIC ANHYDROPHYTOSPHINGOSINE; CANCER-CELLS; GLUCOSYLCERAMIDE SYNTHASE; STEREOSELECTIVE-SYNTHESIS; SPHINGOMYELIN SYNTHASE-1; KAPPA-B; PACHASTRISSAMINE; PHYTOSPHINGOSINE; DEATH; COMBINATION;
D O I
10.1016/j.bcp.2009.05.002
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
Marine environment has frequently afforded a variety of biologically active compounds with strong anticancer and cytotoxic properties. In the present study, the mechanism of action of Jaspine B, an anhydrophytosphingosine derivative isolated from the marine sponge Jaspis sp., was investigated. Jaspine B was able to dose- and time-dependently decrease the viability Of murine B16 and human SK-Me128 melanoma cells. On these cells, Jaspine B treatment triggered cell death by typical apoptosis as illustrated by phosphatidylserine externalization, the release of cytochrome c and caspase processing. These effects were associated with increased intracellular ceramide levels owing to perturbed ceramide metabolism. Indeed, Jaspine B exposure strongly inhibited the activity of sphingomyelin synthase (SMS), an enzyme that converts de novo ceramide into the membrane lipid sphingomyelin. Moreover, whereas Jaspine B-induced cell death was enhanced in SMS1-depleted cells, it was strongly inhibited in cells that stably overexpress human SMS1. Finally, the cytotoxic effects of Jaspine B truncated analogs were also shown to be dependent on SMS activity. Altogether, Jaspine B is able to kill melanoma cells by acting on SMS activity and consequently on ceramide formation, and may represent a new class of cytotoxic compounds with potential applications in anticancer melanoma therapy. (C) 2009 Elsevier Inc. All rights reserved.
引用
收藏
页码:477 / 485
页数:9
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