Soluble F proteins exacerbate pulmonary histopathology after vaccination upon respiratory syncytial virus challenge but not when presented on virus-like particles

被引:22
作者
Lee, Youri [1 ,2 ]
Lee, Young-Tae [1 ]
Ko, Eun-Ju [1 ]
Kim, Ki-Hye [1 ]
Hwang, Hye Suk [1 ]
Park, Soojin [1 ]
Kwon, Young-Man [1 ]
Kang, Sang Moo [1 ,2 ]
机构
[1] Georgia State Univ, Inst Biomed Sci, Ctr Inflammat Immun & Infect, Atlanta, GA 30303 USA
[2] Georgia State Univ, Dept Biol, Inst Biomed Sci, Atlanta, GA USA
关键词
enhanced disease; F protein; respiratory syncytial virus; safety; virus-like particle; IMMUNE-RESPONSES; COTTON RATS; CPG OLIGODEOXYNUCLEOTIDE; CONFERS PROTECTION; FUSION PROTEIN; GLYCOPROTEIN; RSV; DISEASE; MICE; IMMUNIZATION;
D O I
10.1080/21645515.2017.1362514
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Respiratory syncytial virus (RSV) fusion (F) protein is suggested to be a protective vaccine target although its efficacy and safety concerns remain not well understood. We investigated immunogenicity, efficacy, and safety of F proteins in a soluble form or on virus-like particle (F-VLP). F VLP preferentially elicited IgG2a antibody and T helper type 1 (Th1) immune responses whereas F protein induced IgG1 isotype and Th2 responses. Despite lung viral clearance after prime or prime-boost and then RSV challenge, F protein immune mice displayed weight loss and lung histopathology and high mucus production and eosinophils. In contrast, prime or prime-boost vaccination of F VLP induced effective protection, prevented infiltration of eosinophils and vaccine- enhanced disease after challenge. This study provides insight into developing an effective and safe RSV vaccine candidate.
引用
收藏
页码:2594 / 2605
页数:12
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