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
Vaccinejournal_title
Vaccineauthors
Pulford DJ,Gates A,Bridge SH,Robinson JH,Ulaeto Ddoi
10.1016/j.vaccine.2004.02.034subject
Has Abstractpub_date
2004-09-03 00:00:00pages
3358-66issue
25-26eissn
0264-410Xissn
1873-2518pii
S0264410X04002063journal_volume
22pub_type
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