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Updated: Jul 11, 2025

A Simple and Efficient Approach to Construct Mutant Vaccinia Virus Vectors
Published on: October 30, 2016
A recombination-resistant genome for live attenuated and stable PEDV vaccines by engineering the transcriptional
Xiaoyu Niu1,2, Mingde Liu1,2, Shaomin Yang3
1Center for Food Animal Health, Department of Animal Sciences, College of Food, Agricultural and Environmental Sciences, The Ohio State University, Wooster, Ohio, USA.
Importance:
Coronaviruses are important pathogens of humans and animals, and vaccine developments against them are imperative. Due to the ability to induce broad and prolonged protective immunity and the convenient administration routes, live attenuated vaccines (LAVs) are promising arms for controlling the deadly coronavirus infections. However, potential recombination events between vaccine and field strains raise a safety concern for LAVs. The porcine epidemic diarrhea virus (PEDV) remodeled TRS (RMT) mutant generated in this study replicated efficiently in both cell culture and in pigs and retained protective immunogenicity against PEDV challenge in pigs. Furthermore, the RMT PEDV was resistant to recombination and genetically stable. Therefore, RMT PEDV can be further optimized as a backbone for the development of safe LAVs.
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