國家衛生研究院 NHRI:Item 3990099045/11020

NHRI > National Institute of Infectious Diseases and Vaccinology > Min-Shi Lee > Periodical Articles > Item 3990099045/11020

Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/11020

Title:	Development of a high-growth enterovirus 71 vaccine candidate inducing cross-reactive neutralizing antibody responses
Authors:	Chia, MY;Chung, WY;Wang, CH;Chang, WH;Lee, MS
Contributors:	National Institute of Infectious Diseases and Vaccinology
Abstract:	Although Enterovirus 71 (EV71) has only one serotype based on serum neutralization tests using hyperimmune animal antisera, three major genogroups (A, B and C) including eleven genotypes (A, B1-B2, and C1-C5) can be well classified based on phylogenetic analysis. Since 1997, large-scale EV71 epidemics occurred cyclically with different genotypes in the Asia-Pacific region. Therefore, development of EV71 vaccines is a national priority in several Asian countries. Currently, five vaccine candidates have been evaluated in clinical trials in China (three C4 candidates), Singapore (one B2 candidate), and Taiwan (one B4 candidate). Overall, the peak viral titers of these 5 vaccine candidates could only reach about 10(7)TCID50/mL. Moreover, genotypes of these 5 candidates are different from the current predominant genotype B5 in Taiwan and South-Eastern Asia. We adapted a high-growth EV71 genotype B5 (HG-B5) virus after multiple passages and plaque selections in Vero cells and the HG-B5 virus could reach high titers (>10(8)TCID50/mL) in a microcarrier-based cell culture system. The viral particles were further purified and formulated with alum adjuvant. After two doses of intramuscular immunization in rabbits, the HG-B5 vaccine candidate could induce cross-reactive neutralizing antibodies against the three major EV71 genogroups. In conclusion, a high-growth EV71 virus was successfully adapted in Vero cells and could induce broad spectrum neutralizing antibody titers against three (A, B5, and C4) genotypes in rabbits.
Date:	2018-02-21
Relation:	Vaccine. 2018 Feb 21;36(9):1167-1173.
Link to:	http://dx.doi.org/10.1016/j.vaccine.2018.01.041
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0264-410X&DestApp=IC2JCR
Cited Times(WOS):	https://www.webofscience.com/wos/woscc/full-record/WOS:000426407800006
Cited Times(Scopus):	http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85041587419
Appears in Collections:	[Min-Shi Lee] Periodical Articles

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