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- W1997519170 abstract "Simian immunodeficiency virus (SIV) is a robust pathogen used in non-human primates to model HIV vaccines. SIV encodes a number of potential vaccine targets. By far the largest and most conserved protein target in SIV is gag-pol encodes many epitopes with potential to drive multivalent T cell responses. While it is an attractive antigen, pol is only translated after a frame shift from gag so that only 1 in 10 gag proteins include this larger antigen. The codon bias of native lentiviral genes are also mismatched with the abundance of tRNAs in mammalian cells resulting in poor expression of unmodified SIV genes. To provide a better SIV gag-pol immunogen for gene-based vaccination, we codon-optimized the full gag-pol sequence from SIVmac239. To increase pol expression, we artificially moved the pol sequence in frame to gag to bypass the need for a translational frame shift for its expression. Finally, we inserted four “self-cleaving” picornavirus sequences into gag p24, protease, reverse transcriptase, and into integrase to fragment the proteins for potentially better immune presentation. We demonstrate that these immunogens are well expressed in vitro and drive similar antibody and T cell responses with or without cleavage sequences." @default.
- W1997519170 created "2016-06-24" @default.
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- W1997519170 date "2015-12-01" @default.
- W1997519170 modified "2023-09-27" @default.
- W1997519170 title "A novel codon-optimized SIV gag-pol immunogen for gene-based vaccination" @default.
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- W1997519170 doi "https://doi.org/10.1016/j.virep.2015.03.002" @default.
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