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Comparison of viral Env proteins from acute and chronic infections with subtype C human immunodeficiency virus type 1 identifies differences in glycosylation and CCR5 utilization and suggests a new strategy for immunogen design.

Publication ,  Journal Article
Ping, L-H; Joseph, SB; Anderson, JA; Abrahams, M-R; Salazar-Gonzalez, JF; Kincer, LP; Treurnicht, FK; Arney, L; Ojeda, S; Zhang, M; Keys, J ...
Published in: J Virol
July 2013

Understanding human immunodeficiency virus type 1 (HIV-1) transmission is central to developing effective prevention strategies, including a vaccine. We compared phenotypic and genetic variation in HIV-1 env genes from subjects in acute/early infection and subjects with chronic infections in the context of subtype C heterosexual transmission. We found that the transmitted viruses all used CCR5 and required high levels of CD4 to infect target cells, suggesting selection for replication in T cells and not macrophages after transmission. In addition, the transmitted viruses were more likely to use a maraviroc-sensitive conformation of CCR5, perhaps identifying a feature of the target T cell. We confirmed an earlier observation that the transmitted viruses were, on average, modestly underglycosylated relative to the viruses from chronically infected subjects. This difference was most pronounced in comparing the viruses in acutely infected men to those in chronically infected women. These features of the transmitted virus point to selective pressures during the transmission event. We did not observe a consistent difference either in heterologous neutralization sensitivity or in sensitivity to soluble CD4 between the two groups, suggesting similar conformations between viruses from acute and chronic infection. However, the presence or absence of glycosylation sites had differential effects on neutralization sensitivity for different antibodies. We suggest that the occasional absence of glycosylation sites encoded in the conserved regions of env, further reduced in transmitted viruses, could expose specific surface structures on the protein as antibody targets.

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Published In

J Virol

DOI

EISSN

1098-5514

Publication Date

July 2013

Volume

87

Issue

13

Start / End Page

7218 / 7233

Location

United States

Related Subject Headings

  • Virus Replication
  • Virology
  • Viral Envelope Proteins
  • T-Lymphocytes
  • South Africa
  • Sex Factors
  • Sequence Analysis, DNA
  • Sequence Alignment
  • Receptors, CCR5
  • Protein Conformation
 

Citation

APA
Chicago
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Ping, L.-H., Joseph, S. B., Anderson, J. A., Abrahams, M.-R., Salazar-Gonzalez, J. F., Kincer, L. P., … CAPRISA Acute Infection Study and the Center for HIV-AIDS Vaccine Immunology Consortium, . (2013). Comparison of viral Env proteins from acute and chronic infections with subtype C human immunodeficiency virus type 1 identifies differences in glycosylation and CCR5 utilization and suggests a new strategy for immunogen design. J Virol, 87(13), 7218–7233. https://doi.org/10.1128/JVI.03577-12
Ping, Li-Hua, Sarah B. Joseph, Jeffrey A. Anderson, Melissa-Rose Abrahams, Jesus F. Salazar-Gonzalez, Laura P. Kincer, Florette K. Treurnicht, et al. “Comparison of viral Env proteins from acute and chronic infections with subtype C human immunodeficiency virus type 1 identifies differences in glycosylation and CCR5 utilization and suggests a new strategy for immunogen design.J Virol 87, no. 13 (July 2013): 7218–33. https://doi.org/10.1128/JVI.03577-12.
Ping L-H, Joseph SB, Anderson JA, Abrahams M-R, Salazar-Gonzalez JF, Kincer LP, Treurnicht FK, Arney L, Ojeda S, Zhang M, Keys J, Potter EL, Chu H, Moore P, Salazar MG, Iyer S, Jabara C, Kirchherr J, Mapanje C, Ngandu N, Seoighe C, Hoffman I, Gao F, Tang Y, Labranche C, Lee B, Saville A, Vermeulen M, Fiscus S, Morris L, Karim SA, Haynes BF, Shaw GM, Korber BT, Hahn BH, Cohen MS, Montefiori D, Williamson C, Swanstrom R, CAPRISA Acute Infection Study and the Center for HIV-AIDS Vaccine Immunology Consortium. Comparison of viral Env proteins from acute and chronic infections with subtype C human immunodeficiency virus type 1 identifies differences in glycosylation and CCR5 utilization and suggests a new strategy for immunogen design. J Virol. 2013 Jul;87(13):7218–7233.

Published In

J Virol

DOI

EISSN

1098-5514

Publication Date

July 2013

Volume

87

Issue

13

Start / End Page

7218 / 7233

Location

United States

Related Subject Headings

  • Virus Replication
  • Virology
  • Viral Envelope Proteins
  • T-Lymphocytes
  • South Africa
  • Sex Factors
  • Sequence Analysis, DNA
  • Sequence Alignment
  • Receptors, CCR5
  • Protein Conformation