A chimpanzee adenoviral vector-based rabies vaccine protects beagle dogs from lethal rabies virus challenge

Virology
Xiang WangDongming Zhou

Abstract

Rabies continues to poses serious threats to the public health in many countries. The development of novel inexpensive, safe and effective vaccines has become a high priority for rabies control worldwide. We previously generated a novel recombinant rabies vaccine by cloning rabies virus glycoprotein into a chimpanzee adenoviral vector, termed ChAd68-Gp. The present study evaluated the immune responses and protection afforded by this vaccine in beagle dogs. The results demonstrated that intramuscular immunization with both low-dose and high-dose of ChAd68-Gp induced strong immune responses and provided complete protection in beagles even at low-dose. However, when administered orally, high-dose vaccination was protective while low-dose vaccination was ineffective. Further investigation indicated that the low-pH value of gastric juice in the stomach of beagles might decompose the adenovirus. Therefore, suitable formulation for adenovirus-based oral vaccine should be considered and developed. The chimpanzee adenovirus-vectored rabies vaccine ChAd68-Gp warrants extensive test for clinical application.

References

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Jun 27, 2006·Molecular Therapy : the Journal of the American Society of Gene Therapy·Dongming ZhouHildegund C J Ertl
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Jun 4, 2015·Emerging Microbes & Infections·Xiang WangDongming Zhou
Apr 23, 2016·Human Vaccines & Immunotherapeutics·Chao Zhang, Dongming Zhou
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Apr 5, 2017·Methods in Molecular Biology·Chao ZhangDongming Zhou
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Jan 5, 2018·Human Vaccines & Immunotherapeutics·Jingao GuoDongming Zhou
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