Transmission of Multiple HIV-1 Subtype C Transmitted/founder Viruses into the Same Recipients Was not Determined by Modest Phenotypic Differences.

Journal Article (Journal Article)

A severe bottleneck exists during HIV-1 mucosal transmission. However, viral properties that determine HIV-1 transmissibility are not fully elucidated. We identified multiple transmitted/founder (T/F) viruses in six HIV-1-infected subjects by analyzing whole genome sequences. Comparison of biological phenotypes of different T/F viruses from the same individual allowed us to more precisely identify critical determinants for viral transmissibility since they were transmitted under similar conditions. All T/F viruses used coreceptor CCR5, while no T/F viruses used CXCR4 or GPR15. However, the efficiency for different T/F viruses from the same individual to use CCR5 was significantly variable, and the differences were even more significant for usage of coreceptors FPRL1, CCR3 and APJ. Resistance to IFN-α was also different between T/F viruses in 2 of 3 individuals. The relative fitness between T/F viruses from the same subject was highly variable (2-6%). Importantly, the levels of coreceptor usage efficiency, resistance to IFN-α and viral fitness were not associated with proportions of T/F viruses in each individual during acute infection. Our results show that the modest but significant differences in coreceptor usage efficiency, IFN-α sensitivity and viral fitness each alone may not play a critical role in HIV-1 transmission.

Full Text

Duke Authors

Cited Authors

  • Song, H; Hora, B; Giorgi, EE; Kumar, A; Cai, F; Bhattacharya, T; Perelson, AS; Gao, F

Published Date

  • December 2, 2016

Published In

Volume / Issue

  • 6 /

Start / End Page

  • 38130 -

PubMed ID

  • 27909304

Pubmed Central ID

  • PMC5133561

Electronic International Standard Serial Number (EISSN)

  • 2045-2322

Digital Object Identifier (DOI)

  • 10.1038/srep38130


  • eng

Conference Location

  • England