Genetic analysis of culture-negative UNAIDS subtype C samples.

Abstract:

:To help in the vaccine development, WHO-UNAIDS launched a program for the isolation and characterization of subtype C viruses, the most prevalent HIV-1 subtype in the world. Isolates were obtained from Brazil, China, India, Israel, and South Africa, countries in which these strains are circulating. In this study we genetically characterized a set of samples displaying the culture-negative phenotype by sequencing the nucleotides of three genomic regions: the p17 region of the gag gene, the C2V3C3 fragment of the env gene, and the nef gene. The association of the culture-negative phenotype with the nef gene was studied, and we found a significant accumulation of gene alterations. Except for one B/C recombinant from India, the samples studied formed a monophylogenetic subtype C clade, although samples from Brazil formed a statistically significant, independent subcluster in two of the three genes analyzed.

authors

Sánchez-Merino V,Herrero CC,Amorin-Nink A,von Briesen H,López-Galíndez C,World Health Organization-UNAIDS Network for Isolation and Characterization.

doi

10.1089/08892220360473961

subject

Has Abstract

pub_date

2003-01-01 00:00:00

pages

49-55

issue

1

eissn

0889-2229

issn

1931-8405

journal_volume

19

pub_type

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