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Inhibition of cell division but not nuclear division by 1-O- octadecyl-2-O-methyl-Sn-glycero-3-phosphocholine.

机译:1-O-十八烷基-2-O-甲基-Sn-甘油-3-磷酸胆碱可抑制细胞分裂,但不能抑制核分裂。

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1-O-Octadecyl-2-O-methyl-glycero-3-phosphocholine (ET-18-OCH(3)) selectively inhibits the growth of cancer cells. Here we show that in some cell types ET-18-OCH(3)and liposome-associated ET-18-OCH(3)inhibit cell division without concurrent inhibition of nuclear division, leading to multinucleate cell formation, and cell death through apoptosis. Cell cycle analysis revealed that ET-18-OCH(3)-treated U-937 cells continued to move through the cell cycle, but many cells were not able to divide and instead accumulated as tetraploid cells or octaploid cells in the G0/G1 phase of the cell cycle. Inhibition of cytokinesis has been shown to be paralleled by activation of U-937 cells, including upregulation of some cell-surface markers, acquisition of phagocytic activity, and secretion of tumor necrosis factor (TNF)-alpha (Pushkareva et al., 2000). Furthermore, treatment of cells with ET-18-OCH(3)results in the accumulation of apoptotic cells in time- and dose-dependent manner. It is possible that inhibition of cytokinesis may be related to cytoskeletal effects. Copyright 1999 Academic Press.
机译:1-O-十八烷基-2-O-甲基-甘油-3-磷酸胆碱(ET-18-OCH(3))选择性抑制癌细胞的生长。在这里,我们显示在某些细胞类型ET-18-OCH(3)和脂质体相关的ET-18-OCH(3)抑制细胞分裂而没有同时抑制核分裂,从而导致多核细胞形成,以及通过凋亡导致细胞死亡。细胞周期分析显示,经ET-18-OCH(3)处理的U-937细胞继续在细胞周期中移动,但是许多细胞无法分裂,而是以G0 / G1期的四倍体细胞或八倍体细胞形式积累细胞周期。业已证明,胞质分裂的抑制与U-937细胞的激活同时发生,包括一些细胞表面标志物的上调,吞噬活性的获得以及肿瘤坏死因子(TNF)-α的分泌(Pushkareva等,2000)。 。此外,用ET-18-OCH(3)处理细胞会导致凋亡细胞以时间和剂量依赖的方式积累。胞质分裂的抑制可能与细胞骨架作用有关。版权所有1999,学术出版社。

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