检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:马秀玲 李逸飞 孙圣 李海山 MA Xiuling;LI Yifei;SUN Sheng;LI Haishan(Chinese Academy of Surveillance and Testing(Tianjin)Co.,Ltd.,Tianjin 300309,China)
机构地区:[1]中检科健(天津)检验检测有限责任公司,天津300309
出 处:《发酵科技通讯》2022年第3期139-144,共6页Bulletin of Fermentation Science and Technology
基 金:天津市科技计划项目(18PTYJTG00030)。
摘 要:用小鼠淋巴瘤L5178Y细胞TK基因的致突变实验来评价二氢杨梅素的致突变性。在代谢活化和非代谢活化条件下,8种不同质量浓度的二氢杨梅素,作用在一定数量的含有小鼠淋巴瘤L5178Y细胞中,作用3 h后,离心将上清液弃去加入完全DMEM培养液,连续培养48 h后,分别铺PE_(2)平板效率和MF突变频率的平板于96孔板中,显微镜下观察MF中的突变细胞集落,计数各剂量组突变细胞的集落数,比较大小集落数与阴性对照组,进行数据统计分析。在代谢活化和非代谢活化条件下的二氢杨梅素均未引起该细胞突变率的改变。因此,当二氢杨梅素的终质量浓度为39.06~5000μg/mL时,未能引起小鼠淋巴瘤细胞TK基因位点的致突变性作用。To evaluate the L5178Y TK gene mutation in mouse lymphoma cells induced by dihydromyricetin,L5178Y cells were treated for 3 h with eight different concentrations of dihydromyricetin in the absence and presence of metabolic activation system.The supernatant was discarded,and the DMEM media was added to culture for 48 h.The PE_(2) plate efficiency and MF mutaion freequency were be pared in plate respectively.The mutant cell colonies in the MF were observed under a microscope;the number of mutant cell colonies in each dose group was counted;and the number of large and small colonies was compared with the negative control group for statistical analysis.The mutation rate of this cell wasn t changed by dihydromyricetin under metabolic.Therefore,the final concentration of dihydromyricetin from 39.06μg/mL to 5000μg/mL failed to cause the mutagenicity of TK gene locus in mouse lymphoma cells.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.200