Immunogenicity of a DNA prime and recombinant adenovirus boost regime significantly varies between rhesus macaques of Chinese and Indian origins.
BACKGROUND
Due to an ever increasing shortage of rhesus macaques of Indian origin (InR) that have been generally used for preclinical AIDS vaccine trials in non-human primates, demand is rising for Chinese rhesus macaques (ChR). However, the immunogenicity of an AIDS vaccine candidate has not been compared in parallel in both rhesus macaque subspecies.


METHODS
ChR and InR were immunized with SIV/HIV DNA and adenovirus vaccine and their immune responses to SIV and HIV evaluated.


RESULTS
SIV Gag- and Env-specific T-cell responses and SIV-specific lymphoproliferative responses measured in ChR were significantly weaker than those in InR (P < 0.05). By contrast, antibody responses to SIV Env, Tat, and Nef in ChR were stronger than those in InR (P < 0.05).


CONCLUSIONS
Immunogenicity of an AIDS vaccine can vary significantly depending on the geographic origin implying genetic differences of macaques. This must be considered when describing and interpreting results of such vaccine studies.
Department of Virology and Immunology, German Primate Centre, Göttingen, Germany.
Christiane
C
Stahl-Hennig
You Suk
YS
Suh
Ki Seok
KS
Park
Ulrike
U
Sauermann
Kwang Soon
KS
Kim
Soshin
S
Ahn
Monika
M
Franz
Reiner
R
Schulte
Nicole
N
Stolte-Leeb
Gerhard
G
Hunsmann
Young Chul
YC
Sung
D000818:Animals; D000914:Antibodies, Viral / Q000097:blood; D019540:Area Under Curve; D049109:Cell Proliferation; D002681:China; D004195:Disease Models, Animal; D004797:Enzyme-Linked Immunosorbent Assay / Q000662:veterinary; D007114:Immunization / Q000379:methods / Q000662:veterinary*; D007194:India; D007371:Interferon-gamma / Q000032:analysis; D008253:Macaca mulatta; D009500:Neutralization Tests / Q000662:veterinary; D018449:SAIDS Vaccines / Q000276:immunology*; D016097:Simian Acquired Immunodeficiency Syndrome / Q000276:immunology* / Q000517:prevention & control / Q000821:virology; D015302:Simian Immunodeficiency Virus / Q000235:genetics / Q000276:immunology*; D018709:Statistics, Nonparametric; D013601:T-Lymphocytes / Q000276:immunology / Q000821:virology; D019444:Vaccines, DNA / Q000276:immunology*; D014614:Vaccines, Synthetic / Q000276:immunology
D000914:Antibodies, Viral; D018449:SAIDS Vaccines; D019444:Vaccines, DNA; D014614:Vaccines, Synthetic; D007371:Interferon-gamma