Differential efficacy of vaccinia virus envelope proteins administered by DNA immunisation in protection of BALB/c mice from a lethal intranasal poxvirus challenge.

Abstract:

:DNA vaccines might offer an alternative to the live smallpox vaccine in providing protective efficacy in an orthopoxvirus (OPV) lethal respiratory challenge model. BALB/c mice were immunised with DNA vaccines coding for 10 different single vaccinia virus (VACV) membrane proteins. After an intranasal challenge with the VACV IHD strain, three gene candidates B5R, A33R and A27L produced > or =66% survival. The B5R DNA vaccine consistently produced 100% protection and exhibited greatest efficacy after three 50 microg intramuscular doses in this model. Sero-conversion to these vaccines was often inconsistent, implying that antibody itself was not a correlate of protection. The B5R DNA vaccine induced a strong and consistent gamma interferon (IFNgamma) response in BALB/c mice given a single DNA vaccine dose. Strong IFNgamma responses were also measured in pTB5R immunised C57BL6 mice deficient for MHC class I molecules, suggesting that the memory response was mediated by a CD4+ T cell population.

journal_name

Vaccine

journal_title

Vaccine

authors

Pulford DJ,Gates A,Bridge SH,Robinson JH,Ulaeto D

doi

10.1016/j.vaccine.2004.02.034

subject

Has Abstract

pub_date

2004-09-03 00:00:00

pages

3358-66

issue

25-26

eissn

0264-410X

issn

1873-2518

pii

S0264410X04002063

journal_volume

22

pub_type

杂志文章

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