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Dynamic antibody specificities and virion concentrations in circulating immune complexes in acute to chronic HIV-1 infection.

Publication ,  Journal Article
Liu, P; Overman, RG; Yates, NL; Alam, SM; Vandergrift, N; Chen, Y; Graw, F; Freel, SA; Kappes, JC; Ochsenbauer, C; Montefiori, DC; Gao, F ...
Published in: J Virol
November 2011

Understanding the interactions between human immunodeficiency virus type 1 (HIV-1) virions and antibodies (Ab) produced during acute HIV-1 infection (AHI) is critical for defining antibody antiviral capabilities. Antibodies that bind virions may prevent transmission by neutralization of virus or mechanically prevent HIV-1 migration through mucosal layers. In this study, we quantified circulating HIV-1 virion-immune complexes (ICs), present in approximately 90% of AHI subjects, and compared the levels and antibody specificity to those in chronic infection. Circulating HIV-1 virions coated with IgG (immune complexes) were in significantly lower levels relative to the viral load in acute infection than in chronic HIV-1 infection. The specificities of the antibodies in the immune complexes differed between acute and chronic infection (anti-gp41 Ab in acute infection and anti-gp120 in chronic infection), potentially suggesting different roles in immunopathogenesis for complexes arising at different stages of infection. We also determined the ability of circulating IgG from AHI to bind infectious versus noninfectious virions. Similar to a nonneutralizing anti-gp41 monoclonal antibody (MAb), purified plasma IgG from acute HIV-1 subjects bound both infectious and noninfectious virions. This was in contrast to the neutralizing antibody 2G12 MAb that bound predominantly infectious virions. Moreover, the initial antibody response captured acute HIV-1 virions without selection for different HIV-1 envelope sequences. In total, this study demonstrates that the composition of immune complexes are dynamic over the course of HIV-1 infection and are comprised initially of antibodies that nonselectively opsonize both infectious and noninfectious virions, likely contributing to the lack of efficacy of the antibody response during acute infection.

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Published In

J Virol

DOI

EISSN

1098-5514

Publication Date

November 2011

Volume

85

Issue

21

Start / End Page

11196 / 11207

Location

United States

Related Subject Headings

  • Virology
  • Virion
  • Immunoglobulin G
  • Humans
  • HIV-1
  • HIV Infections
  • HIV Envelope Protein gp41
  • HIV Envelope Protein gp120
  • HIV Antibodies
  • Chronic Disease
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Liu, P., Overman, R. G., Yates, N. L., Alam, S. M., Vandergrift, N., Chen, Y., … Tomaras, G. D. (2011). Dynamic antibody specificities and virion concentrations in circulating immune complexes in acute to chronic HIV-1 infection. J Virol, 85(21), 11196–11207. https://doi.org/10.1128/JVI.05601-11
Liu, Pinghuang, R Glenn Overman, Nicole L. Yates, S Munir Alam, Nathan Vandergrift, Yue Chen, Frederik Graw, et al. “Dynamic antibody specificities and virion concentrations in circulating immune complexes in acute to chronic HIV-1 infection.J Virol 85, no. 21 (November 2011): 11196–207. https://doi.org/10.1128/JVI.05601-11.
Liu P, Overman RG, Yates NL, Alam SM, Vandergrift N, Chen Y, et al. Dynamic antibody specificities and virion concentrations in circulating immune complexes in acute to chronic HIV-1 infection. J Virol. 2011 Nov;85(21):11196–207.
Liu, Pinghuang, et al. “Dynamic antibody specificities and virion concentrations in circulating immune complexes in acute to chronic HIV-1 infection.J Virol, vol. 85, no. 21, Nov. 2011, pp. 11196–207. Pubmed, doi:10.1128/JVI.05601-11.
Liu P, Overman RG, Yates NL, Alam SM, Vandergrift N, Chen Y, Graw F, Freel SA, Kappes JC, Ochsenbauer C, Montefiori DC, Gao F, Perelson AS, Cohen MS, Haynes BF, Tomaras GD. Dynamic antibody specificities and virion concentrations in circulating immune complexes in acute to chronic HIV-1 infection. J Virol. 2011 Nov;85(21):11196–11207.

Published In

J Virol

DOI

EISSN

1098-5514

Publication Date

November 2011

Volume

85

Issue

21

Start / End Page

11196 / 11207

Location

United States

Related Subject Headings

  • Virology
  • Virion
  • Immunoglobulin G
  • Humans
  • HIV-1
  • HIV Infections
  • HIV Envelope Protein gp41
  • HIV Envelope Protein gp120
  • HIV Antibodies
  • Chronic Disease