Vitamin K3 and vitamin C alone or in combination induced apoptosis in leukemia cells by a similar oxidative stress signalling mechanism.

Vitamin K3 and vitamin C alone or in combination induced apoptosis in leukemia cells by a similar oxidative stress signalling mechanism.
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DOI:
10.1186/1475-2867-11-19
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发表时间:
2011-06-10
影响因子:
5.8
通讯作者:
Velez-Pardo C
Velez-Pardo C
中科院分区:
医学2区
文献类型:
--
作者:
Bonilla-Porras AR;Jimenez-Del-Rio M;Velez-Pardo C

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继发性治疗相关的急性淋巴细胞白血病可能出现化疗和/或放疗后原发性恶性肿瘤。因此,应寻求其他替代方案来治疗白血病。研究表明,维生素K3或维生素C通过氧化应激机制诱导白血病细胞凋亡,所述氧化应激机制涉及超氧阴离子自由基和过氧化氢的产生、NF-κB、p53、c-Jun的活化、蛋白酶caspase-3的活化以及导致核碎裂的线粒体去极化。当Jurkat和K562细胞分别以1000:1(10 mM:10 μM)或100:1(300 μM:3 μM)的比例暴露于VC和VK 3时,细胞死亡更为显著。我们提供了第一次在体外的证据支持VK 3和VC诱导的Jurkat和K562细胞凋亡的多米诺骨牌机制中的氧化应激的致病作用。总之,这些数据表明,VK 3和VC应该是有用的白血病的治疗。
Secondary therapy-related acute lymphoblastic leukemia might emerge following chemotherapy and/or radiotherapy for primary malignancies. Therefore, other alternatives should be pursued to treat leukemia. It is shown that vitamin K3- or vitamin C- induced apoptosis in leukemia cells by oxidative stress mechanism involving superoxide anion radical and hydrogen peroxide generation, activation of NF-κB, p53, c-Jun, protease caspase-3 activation and mitochondria depolarization leading to nuclei fragmentation. Cell death was more prominent when Jurkat and K562 cells are exposed to VC and VK3 in a ratio 1000:1 (10 mM: 10 μM) or 100:1 (300 μM: 3 μM), respectively. We provide for the first time in vitro evidence supporting a causative role for oxidative stress in VK3- and VC-induced apoptosis in Jurkat and K562 cells in a domino-like mechanism. Altogether these data suggest that VK3 and VC should be useful in the treatment of leukemia.
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