Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

To investigate the viral features of long-term nonprogressive HIV-1 infection and the selection of viral genomes, we studied serial complete HIV-1 sequences obtained from a mother-child pair, both long-term nonprogressors. Analysis of four genomic sequences demonstrated that all viral genes were intact, lacking major deletions or premature stop codons to easily explain the slow disease progression. These data suggest that viral attenuation, if present, was caused by subtle sequence variations or virus-host interactions. Serial sequences from an HIV-1-infected mother-child pair afforded us the opportunity to examine the immune selection of HIV-1 sequences years after transmission between individuals. We demonstrated that the daughter's strains were most likely subjected to immunoselection or immunoediting according to the presence of novel MHC class I alleles that differed between mother and daughter. An analysis of nef-specific cytotoxic T-lymphocyte responses in the child, whose HIV-1 nef sequence differed from the maternal nef, supported this interpretation. This study highlights the potential of full genome analysis in the investigation of pathogenesis and immune selection during HIV-1 evolution.

Original publication

DOI

10.1089/aid.2006.0180

Type

Journal article

Journal

AIDS Res Hum Retroviruses

Publication Date

02/2007

Volume

23

Pages

309 - 315

Keywords

Adult, Child, Preschool, Disease Progression, Evolution, Molecular, Female, Gene Products, nef, Genes, MHC Class I, HIV Infections, HIV Long-Term Survivors, HIV-1, Humans, Infant, Newborn, Infectious Disease Transmission, Vertical, Molecular Sequence Data, Pregnancy, Retroviridae Proteins, Selection, Genetic, nef Gene Products, Human Immunodeficiency Virus