Determination of HIV type 1 CRF01_AE gag p17 and env-V3 consensus sequences for HIV/AIDS vaccine design.
2004
A molecular epidemiological study of the gag p17 and env-V3 regions on HIV-infected drug users and blood donors was carried out in northern Thailand from 1998 through 2002 to determine the predominant subtype and consensus sequence (CS) for circulating HIV-1 strains. CRF01_AE was concluded to be a predominant strain and the nucleotide CSs in gag p17 and env-V3 showed only 1.26% and no difference from CS in the Los Alamos database, respectively. Our env-V3 CS was identical to the previously published CSs, suggesting that the CS was very conserved from 1990 through 2002 in Thailand. Gag p17 and env-V3 nucleotide sequences of seroconvertors in our subjects were quite similar to the CS and conserved for at least 9 and 6 years postinfection, respectively. These results suggest that the CS approach to the HIV-1 antigen design could overcome HIV diversity and help us develop an effective HIV/AIDS vaccine.
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