Abstract:
:West Nile virus (WNV), currently the cause of a serious U.S. epidemic, is a mosquito-borne flavivirus and member of the Japanese encephalitis (JE) serocomplex. There is currently no approved human WNV vaccine, and treatment options remain limited, resulting in significant mortality and morbidity from human infection. Given the availability of approved human JE vaccines, this study asked whether the JE-ADVAX vaccine, which contains an inactivated cell culture JE virus antigen formulated with Advax delta inulin adjuvant, could provide heterologous protection against WNV infection in wild-type and β2-microglobulin-deficient (β2m(-/-)) murine models. Mice immunized twice or even once with JE-ADVAX were protected against lethal WNV challenge even when mice had low or absent serum cross-neutralizing WNV titers prior to challenge. Similarly, β2m(-/-) mice immunized with JE-ADVAX were protected against lethal WNV challenge in the absence of CD8(+) T cells and prechallenge WNV antibody titers. Protection against WNV could be adoptively transferred to naive mice by memory B cells from JE-ADVAX-immunized animals. Hence, in addition to increasing serum cross-neutralizing antibody titers, JE-ADVAX induced a memory B-cell population able to provide heterologous protection against WNV challenge. Heterologous protection was reduced when JE vaccine antigen was administered alone without Advax, confirming the importance of the adjuvant to induction of cross-protective immunity. In the absence of an approved human WNV vaccine, JE-ADVAX could provide an alternative approach for control of a major human WNV epidemic.
journal_name
J Viroljournal_title
Journal of virologyauthors
Petrovsky N,Larena M,Siddharthan V,Prow NA,Hall RA,Lobigs M,Morrey Jdoi
10.1128/JVI.00480-13subject
Has Abstractpub_date
2013-09-01 00:00:00pages
10324-33issue
18eissn
0022-538Xissn
1098-5514pii
JVI.00480-13journal_volume
87pub_type
杂志文章abstract::Antigens detected by the complement-fixation (CF) test were prepared from BHK-21 cells infected with Pichinde virus. The preparations contained two antigens demonstrable by immunodiffusion. The antigen present in abundance was heat stable, Pronase resistant, and had a molecular weight of 20,000 to 30,000 as estimated ...
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.10.5959-5968.1995
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pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Journal of virology
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pub_type: 杂志文章,评审
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pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
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更新日期:1999-05-01 00:00:00
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pub_type: 杂志文章
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