E-viri
Recenzirano
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Yi, Jing; Zhang, Maifei; Zhu, Lin; Xu, Changzhi; Li, Binglin; Wu, Panpan; Wu, Hang; Zhang, Buchang
Biotechnology letters, 10/2023, Letnik: 45, Številka: 10Journal Article
Purpose Viruses, such as Ebola virus (EBOV), evolve rapidly and threaten the human health. There is a great demand to exploit efficient gene-editing techniques for the identification of virus to probe virulence mechanism for drug development. Methods Based on lambda Red recombination in Escherichia coli ( E. coli ), counter-selection, and in vitro annealing, a high-efficiency genetic method was utilized here for precisely engineering viruses. EBOV trVLPs assay and dual luciferase reporter assay were used to further test the effect of mutations on virus replication. Results Considering the significance of matrix protein VP24 in EBOV replication, the types of mutations within vp24 , including several single-base substitutions, one double-base substitution, two seamless deletions, and one targeted insertion, were generated on the multi-copy plasmid of E. coli . Further, the length of the homology arms for recombination and in vitro annealing, and the amount of DNA cassettes and linear plasmids were optimized to create a more elaborate and cost-efficient protocol than original approach. The effects of VP24 mutations on the expression of a reporter gene (luciferase) from the EBOV minigenome were determined, and results indicated that mutations of key sites within VP24 have significant impacts on EBOV replication. Conclusion This precise mutagenesis method will facilitate effective and simple editing of viral genes in E. coli .
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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