IFA筛选经EMS诱导的沙眼衣原体突变株

Progress in Modern Biomedicine(2016)

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Abstract
目的:用甲基磺酸乙酯(Ethylmethylsulfone,EMS)诱导D型沙眼衣原体突变,利用间接免疫荧光法筛选出突变菌株,为研究不同衣原体基因的功能提供实验依据.方法:将D型沙眼衣原体标准株接种McCoy细胞,加入EMS诱导突变,收集存活菌株,利用空斑实验进行衣原体的分离和纯化,并用不同衣原体蛋白单克隆抗体做间接免疫荧光实验筛选突变株.结果:用间接免疫荧光筛选经EMS作用的沙眼衣原体,筛选出三株包涵体形态偏小的菌株(56#、58#、95#),一株圆形包涵体的突变株(61#)和一株D413N表达阴性的突变菌株(83#).结论:用EMS作为诱导剂诱导D型沙眼衣原体突变,并成功筛选出三种突变株.为寻找衣原体功能基因与衣原体表型之间的联系奠定了实验基础.
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Key words
EMS,Mutant strain,Plaque Assay,IFA
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