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Effect of 5-fluoro-2'-deoxyuridine on toxin production and cell cycle regulation in marine dinoflagellate, Alexandrium tamarense

机译:5-氟-2'-脱氧尿苷对海洋鞭毛藻,塔玛亚历山大藻中毒素产生和细胞周期调控的影响

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摘要

The effect of metabolic inhibitor, 5-fluoro-2'-deoxyuridine (FUdR) on toxin production and the cell cycle of marine dinoflagellate, Alexandrium tamarense, was investigated. Compared to untreated cells, FUdR at 3 μM (p < 0.05) to 300 μM (p < 0.01) inhibited the cell proliferation and toxin production in a dose-dependent manner for A tamarense cultured in modified T_τ medium. FUdR at 203 μM resulted in cell cycle arrest at the S phase at day 4 and toxigenesis was inhibited after day 2. The toxin profiles of the FUdR-treated cultures were similar to those of the control culture. These results suggest that FUdR inhibits saxitoxin (STX) biosynthesis in the early stage of the pathway. This report is the first to demonstrate the inhibition of toxin production in A. tamarense by a nucleoside analog.
机译:研究了代谢抑制剂5-氟-2'-脱氧尿苷(FUdR)对海洋鞭毛鞭毛藻(Alexandraium tamarense)毒素产生和细胞周期的影响。与未经处理的细胞相比,对于在改良的T_τ培养基中培养的塔玛香ense,FUdR在3μM(p <0.05)至300μM(p <0.01)时以剂量依赖的方式抑制细胞增殖和毒素产生。 203μM的FUdR在第4天导致细胞周期停滞在S期,第2天后抑制了毒理作用。FUdR处理的培养物的毒素谱与对照培养物相似。这些结果表明,FUdR在该途径的早期抑制了毒素(STX)的生物合成。该报道是第一个证明核苷类似物抑制番茄红曲霉毒素产生的方法。

著录项

  • 来源
    《Harmful Algae》 |2014年第2期|64-72|共9页
  • 作者单位

    Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai 981-8555, Japan;

    Graduate School of Life Sciences, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai 981-8555, Japan;

    Graduate School of Agricultural Science, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai 981-8555, Japan;

    Graduate School of Life Sciences, Tohoku University, 1-1 Tsutsumidori-Amamiyamachi, Aoba-ku, Sendai 981-8555, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Alexandrium tamarense; 5-Fluoro-2'-deoxyuridine (FUdR); Paralytic shellfish toxins;

    机译:塔玛勒山亚历山大5-氟-2'-脱氧尿苷(FUdR);麻痹性贝类毒素;

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