EfFect of manoalide on apoptosis induced by deprivation of growth factors in vascular endothelial celLs

研究ｍａｎｏａｌｉｄｅ对除去生长因子（ａＦＧＦ和血清）而诱导的血管内皮细胞凋亡的影响．方法：通过细胞形态观察，ＤＮＡ凝胶电泳及荧光显微术等方法确定ｍａｎｏａｌｉｄｅ对细胞凋亡的抑制或促进作用．结果：向去除ａＦＧＦ和血清的培养液中加低浓度的ｍａｎｏａｌｉｄｅ（１－４μｍｏｌ·Ｌ－１），培养细胞４８ｈ，细胞的脱壁和ＤＮＡ片断化受到抑制；ｍａｎｏａｌｉｄｅ浓度为７μｍｏｌ·Ｌ－１时，促进细胞脱壁和ＤＮＡ片断化．结论：低浓度的ｍａｎｏａｌｉｄｅ（２μｍｏｌ·Ｌ－１）抑制血管内皮细胞凋亡，而较高浓度的ｍａｎｏａｌｉｄｅ（７μｍｏｌ·Ｌ－１）促进该细胞凋亡．

AIM: To study effect of manoalide on apoptosis induced by deprivation of acidic fibroblast growth factor (aFGF) and serum in vascular endothelial cells (VEC). METHODS: Morphologic changes were observed by light microscopy. Viability was determined by counting the cells that attached to dishes after treatments. DNA fragmentation was analyzed by agarose gel electrophoresis and fluorescence microscopy. RESULTS: The cells deprived of aFGF and serum were exposed to manoalide 1-4 μmol·L -1 for 48 h, detachment and DNA fragmentation of these cells were suppressed. At 7 μmol·L -1 , manoalide promoted detachment and DNA fragmentation of VEC. CONCLUSION: manoalide 2 μmol·L -1 inhibited, but 7 μmol·L -1 promoted, apoptosis of VEC.