Immunogenicity analysis following human immunodeficiency virus recombinant DNA and recombinant vaccinia virus Tian Tan prime-boost immunization  

作　　者：LIU CunXia DU ShouWen LI Chang WANG YuHang WANG MaoPeng LI Yi YIN RongLan LI Xiao REN DaYong QIN YanQing REN JingQiang JIN NingYi 

机构地区：[1]College of Animal Science and Veterinary Medicine,Jilin University [2]Key Laboratory of Jilin Province for Zoonosis Prevention and Control,Institute of Military Veterinary,AMMS [3]Academy of Animal Science and Veterinary Medicine in Jilin Province

出　　处：《Science China(Life Sciences)》2013年第6期531-540,共10页中国科学（生命科学英文版）

基　　金：supported by the National Natural Science Foundation of China (81001342);the National Basic Research Program of China (2011CB512110);the National Mega Project on Major Infectious Diseases Prevention (2012ZX10001005-006)

摘　　要：This study assessed and compared the immunogenicity of various immunization strategies in mice using combinations of re- combinant DNA （pCCMp24） and recombinant attenuated vaccinia virus Tian Tan （rddVTT_ccMpe4）. Intramuscular immuniza- tion was performed on days 0 （prime） and 21 （boost）. The immunogenicity of the vaccine schedules was determined by meas- uring human immunodeficiency virus （HIV）-specific binding antibody levels and cytokine （interleukin-2 and interleukin-4） concentrations in peripheral blood, analyzing lymphocyte proliferation capacity against HIV epitopes and CD4~/CD8＋cell ratio, and monitoring interferon-gamma levels at different times post-immunization. The results showed that pCCMp24, rddVTT.ccMp24 and their prime-boost immunization induced humoral and cellular immune responses. The pCCMp24/ rddVTT.ccMp24 immunization strategy increased CD8＋ T cells and induced more IFN-7-secreting cells compared with sin- gle-shot rDNA. The prime-boost immunization strategy also induced the generation of cellular immunological memory to HIV epitope peptides. These results demonstrated that prime-boost immunization with rDNA and rddVTT_ccMp24 had a tendency to induce greater cellular immune response than single-shot vaccinations, especially IFN-7 response, providing a basis for further studies.This study assessed and compared the immunogenicity of various immunization strategies in mice using combinations of recombinant DNA(pCCMp24) and recombinant attenuated vaccinia virus Tian Tan(rddVTT-CCMp24).Intramuscular immunization was performed on days 0(prime) and 21(boost).The immunogenicity of the vaccine schedules was determined by measuring human immunodeficiency virus(HIV)-specific binding antibody levels and cytokine(interleukin-2 and interleukin-4) concentrations in peripheral blood,analyzing lymphocyte proliferation capacity against HIV epitopes and CD4 + /CD8 + cell ratio,and monitoring interferon-gamma levels at different times post-immunization.The results showed that pCCMp24,rddVTT-CCMp24 and their prime-boost immunization induced humoral and cellular immune responses.The pCCMp24/rddVTT-CCMp24 immunization strategy increased CD8 + T cells and induced more IFN-γ-secreting cells compared with single-shot rDNA.The prime-boost immunization strategy also induced the generation of cellular immunological memory to HIV epitope peptides.These results demonstrated that prime-boost immunization with rDNA and rddVTT-CCMp24 had a tendency to induce greater cellular immune response than single-shot vaccinations,especially IFN-γ response,providing a basis for further studies.

关 键 词：vaccinia virus Tian Tan human immunodeficiency virus recombinant DNA PRIME-BOOST IMMUNOGENICITY 

分 类 号：R392[医药卫生—免疫学]