کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6133057 1593452 2015 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improved universal cloning of influenza A virus genes by LacZα-mediated blue/white selection
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ویروس شناسی
پیش نمایش صفحه اول مقاله
Improved universal cloning of influenza A virus genes by LacZα-mediated blue/white selection
چکیده انگلیسی
Reverse genetics of influenza A viruses facilitates both basic research and vaccine development. However, efficient cloning of virus gene segments was cumbersome in established systems due to the necessary cleavage of amplicons with outside cutter restriction enzymes followed by ligation. Occasionally, virus genes may contain cleavage sites for those enzymes. To circumvent that problem, we previously established target-primed plasmid amplification using the negative selection marker ccdB cloned into the plasmid pHW2000, flanked by the highly conserved gene segment termini. Here, we further introduced the LacZα fragment downstream of the ccdB region for additional ad-hoc selection of transformed bacteria by blue/white pre-screening. For comparison, we cloned three gene segments (PA, HA, and NS) from the influenza strain A/Swine/Belgium/1/1979 (H1N1) (SwBelg79) into plasmid vectors pHWSccdB and pHWSccdB-LacZα and observed same cloning efficiency. Furthermore, the plasmid pHWSccdB-LacZα allows easy elimination of bacterial colonies containing empty plasmid clones. Using this improved plasmid, we obtained the complete genomic set of eight functional plasmids for SwBelg79.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Virological Methods - Volume 225, 1 December 2015, Pages 87-89
نویسندگان
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