國家衛生研究院 NHRI:Item 3990099045/8188

NHRI > National Institute of Infectious Diseases and Vaccinology > Min-Shi Lee > Periodical Articles > Item 3990099045/8188

Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/8188

Title:	Monitoring antigenic variations of enterovirus 71: Implications for virus surveillance and vaccine development
Authors:	Chia, MY;Chung, WY;Chiang, PS;Chien, YS;Ho, MS;Lee, MS
Contributors:	Division of Infectious Diseases
Abstract:	Enterovirus 71 (EV71) causes life-threatening epidemics in Asia and can be phylogenetically classified into three major genogroups (A~C) including 11 genotypes (A, B1~B5, and C1~C5). Recently, EV71 epidemics occurred cyclically in Taiwan with different genotypes. In recent years, human studies using post-infection sera obtained from children have detected antigenic variations among different EV71 strains. Therefore, surveillance of enterovirus 71 should include phylogenetic and antigenic analysis. Due to limitation of sera available from children with EV71 primary infection, suitable animal models should be developed to generate a panel of antisera for monitoring EV71 antigenic variations. Twelve reference strains representing the 11 EV71 genotypes were grown in rhabdomyosarcoma cells. Infectious EV71 particles were purified and collected to immunize rabbits. The rabbit antisera were then employed to measure neutralizing antibody titers against the 12 reference strains and 5 recent strains. Rabbits immunized with genogroup B and C viruses consistently have a lower neutralizing antibody titers against genogroup A (≧8-fold difference) and antigenic variations between genogroup B and C viruses can be detected but did not have a clear pattern, which are consistent with previous human studies. Comparison between human and rabbit neutralizing antibody profiles, the results showed that ≧8-fold difference in rabbit cross-reactive antibody ratios could be used to screen EV71 isolates for identifying potential antigenic variants. In conclusion, a rabbit model was developed to monitor antigenic variations of EV71, which are critical to select vaccine strains and predict epidemics.
Date:	2014-07-24
Relation:	PLoS Neglected Tropical Diseases. 2014 Jul 24;8(7):Article number e3044.
Link to:	http://dx.doi.org/10.1371/journal.pntd.0003044
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1935-2735&DestApp=IC2JCR
Cited Times(WOS):	https://www.webofscience.com/wos/woscc/full-record/WOS:000340551500068
Cited Times(Scopus):	http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84905484534
Appears in Collections:	[Min-Shi Lee] Periodical Articles

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