Abstract:
:Optimized DNA vectors were constructed comprising the proteome of SIV including the structural, enzymatic, regulatory, and accessory proteins. In addition to native antigens as produced by the virus, fusion proteins and modified antigens with altered secretion, cellular localization and stability characteristics were generated. The DNA vectors were tested for expression upon transfection in human cells. In addition, the vectors were tested either alone or in combinations in mice and macaques, which provided an opportunity to compare immune responses in two animal models. DNA only immunization using intramuscular injection in the absence or presence of in vivo electroporation did not alter the phenotype of the induced T cell responses in mice. Although several fusion proteins induced immune responses to all the components of a polyprotein, we noted fusion proteins that abrogated immune response to some of the components. Since the expression levels of such fusion proteins were not affected, these data suggest that the immune recognition of certain components was altered by the fusion. Testing different DNA vectors in mice and macaques revealed that a combination of DNAs producing different forms of the same antigen generated more balanced immune responses, a desirable feature for an optimal AIDS vaccine.
journal_name
Vaccinejournal_title
Vaccineauthors
Kulkarni V,Jalah R,Ganneru B,Bergamaschi C,Alicea C,von Gegerfelt A,Patel V,Zhang GM,Chowdhury B,Broderick KE,Sardesai NY,Valentin A,Rosati M,Felber BK,Pavlakis GNdoi
10.1016/j.vaccine.2010.12.056subject
Has Abstractpub_date
2011-09-09 00:00:00pages
6742-54issue
39eissn
0264-410Xissn
1873-2518pii
S0264-410X(10)01829-3journal_volume
29pub_type
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