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原生动物柯立斯四膜虫(Tetrahymena corlissi)超高砷耐受性的分子机制研究
Authors
张晶
杨文涛
+4 more
缪炜
袁冬霞
陈瑛
韦薇
Publication date
1 January 2016
Publisher
Abstract
以原生动物柯立斯四膜虫(Tetrahymena corlissi)为实验对象,通过流式细胞仪测定细胞密度分析四膜虫相对生长率,得到砷暴露下T.corlissi 24 h的半数效应浓度(EC50)为110.7μg/m L,是梨形四膜虫(T.pyriformis)的3倍;在克隆到T.corlissi砷甲基转移酶(Ars M)基因的基础上,RT-PCR结果显示,该基因在砷暴露下表达;利用高效液相色谱-电感耦合等离子体质谱仪(HPLC-ICP-MS)联用方法对细胞内砷形态的检测显示,野生型T.corlissi具有比T.pyriformis强数倍的甲基化砷的能力,Ars M基因敲除的T.corlissi失去了甲基化砷的能力,从而推测T.corlissi的Ars M具有高效甲基化砷的能力,是其具有超高的砷耐受性的分子基础
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Institute of Hydrobiology, Chinese Academy Of Sciences
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oai:ir.ihb.ac.cn:342005/42157
Last time updated on 23/01/2021