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Construction of a bivalent vaccine candidate against HAdV4/HAdV7 based on capsid-display strategy via Red-homologous recombination and counter-selection methodology

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Biosafety and Health 2024年第2期6卷 70-79页

作者： Peng Wang Yunting Shao Xichun Yang Wenning Zhang Jianguang Zhou Fang Huang Shuang Liu Jiping Zheng Chengjun Wu Shanhu Li Department of Cell Engineering Beijing Institute of BiotechnologyBeijing 100850China School of Basic Medical Sciences Faculty of MedicineDalian University of TechnologyDalian 116024China Lab of Microbiological Engineering School of Life and Health SciencesHainan UniversityHaikou 570228China

Human adenoviruses(HAdvs)are major respiratory ***,human adenovirus type 4(HAdV4)and human adenovirus type 7(HAdV7)are known for causing fever and pneumonia,with docu-mented cases of fatalities among the *** recent years,HAdV4/HAdv7 has been implicated in caus-ing substantial outbreaks,leading to increased morbidity in multiple *** HAdV4 and HAdV7 infections have been reported in North America,Asia,Europe,Africa,South America,Oceania,and the Middle *** fatalities occurred in North America(the United States)and Asia(China and Singapore).Engineered recombinant adenoviruses have played a crucial role as vaccine *** this study,we con-structed a recombinant adenovirus,Ad4ITRmut-Ad7E3,and evaluated it in vitro and in *** observed that the replication rate of Ad4ITRmut-Ad7E3 was lower than that of the RI-67 strain,indicating that the mutation of inverted terminal repeats(ITRs)weakened the replication ability of *** of BALB/c mice with the bivalent Ad4ITRmut-Ad7E3 vaccine strain,administered by intraperitoneal injection and oral gavage,resulted in the elicitation of neutralizing antibodies targeting HAdV4 and *** finding not only pro-vides a novel method and technique for the efficient construction of a polyvalent recombinant adenovirus vac-cine candidate against HAdV4 and HAdv7 but also against other prevalent adenovirus serotypes such as HAdV3,HAdV11,HAdV14,and HAdv55,from various regions.

关键词： bivalent adenovirus vaccine Capsid-display strategy ITRs modification Hexon epitope replacement

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