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Aggregate complexes of HIV-1 induced by multimeric antibodies.

Publication ,  Journal Article
Stieh, DJ; King, DF; Klein, K; Liu, P; Shen, X; Hwang, KK; Ferrari, G; Montefiori, DC; Haynes, B; Pitisuttithum, P; Kaewkungwal, J; Robb, ML ...
Published in: Retrovirology
October 2, 2014

BACKGROUND: Antibody mediated viral aggregation may impede viral transfer across mucosal surfaces by hindering viral movement in mucus, preventing transcytosis, or reducing inter-cellular penetration of epithelia thereby limiting access to susceptible mucosal CD4 T cells and dendritic cells. These functions may work together to provide effective immune exclusion of virus from mucosal tissue; however little is known about the antibody characteristics required to induce HIV aggregation. Such knowledge may be critical to the design of successful immunization strategies to facilitate viral immune exclusion at the mucosal portals of entry. RESULTS: The potential of neutralizing and non-neutralizing IgG and IgA monoclonals (mAbs) to induce HIV-1 aggregation was assessed by Dynamic light scattering (DLS). Although neutralizing and non-neutralizing IgG mAbs and polyclonal HIV-Ig efficiently aggregated soluble Env trimers, they were not capable of forming viral aggregates. In contrast, dimeric (but not monomeric) IgA mAbs induced stable viral aggregate populations that could be separated from uncomplexed virions. Epitope specificity influenced both the degree of aggregation and formation of higher order complexes by dIgA. IgA purified from serum of uninfected RV144 vaccine trial responders were able to efficiently opsonize viral particles in the absence of significant aggregation, reflective of monomeric IgA. CONCLUSIONS: These results collectively demonstrate that dIgA is capable of forming stable viral aggregates providing a plausible basis for testing the effectiveness of aggregation as a potential protection mechanism at the mucosal portals of viral entry.

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Published In

Retrovirology

DOI

EISSN

1742-4690

Publication Date

October 2, 2014

Volume

11

Start / End Page

78

Location

England

Related Subject Headings

  • Virology
  • Immunoglobulin G
  • Immunoglobulin A
  • Humans
  • HIV-1
  • HIV Antibodies
  • Antibodies, Monoclonal
  • 3107 Microbiology
  • 1103 Clinical Sciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Stieh, D. J., King, D. F., Klein, K., Liu, P., Shen, X., Hwang, K. K., … Shattock, R. J. (2014). Aggregate complexes of HIV-1 induced by multimeric antibodies. Retrovirology, 11, 78. https://doi.org/10.1186/s12977-014-0078-8
Stieh, Daniel J., Deborah F. King, Katja Klein, Pinghuang Liu, Xiaoying Shen, Kwan Ki Hwang, Guido Ferrari, et al. “Aggregate complexes of HIV-1 induced by multimeric antibodies.Retrovirology 11 (October 2, 2014): 78. https://doi.org/10.1186/s12977-014-0078-8.
Stieh DJ, King DF, Klein K, Liu P, Shen X, Hwang KK, et al. Aggregate complexes of HIV-1 induced by multimeric antibodies. Retrovirology. 2014 Oct 2;11:78.
Stieh, Daniel J., et al. “Aggregate complexes of HIV-1 induced by multimeric antibodies.Retrovirology, vol. 11, Oct. 2014, p. 78. Pubmed, doi:10.1186/s12977-014-0078-8.
Stieh DJ, King DF, Klein K, Liu P, Shen X, Hwang KK, Ferrari G, Montefiori DC, Haynes B, Pitisuttithum P, Kaewkungwal J, Nitayaphan S, Rerks-Ngarm S, Michael NL, Robb ML, Kim JH, Denny TN, Tomaras GD, Shattock RJ. Aggregate complexes of HIV-1 induced by multimeric antibodies. Retrovirology. 2014 Oct 2;11:78.
Journal cover image

Published In

Retrovirology

DOI

EISSN

1742-4690

Publication Date

October 2, 2014

Volume

11

Start / End Page

78

Location

England

Related Subject Headings

  • Virology
  • Immunoglobulin G
  • Immunoglobulin A
  • Humans
  • HIV-1
  • HIV Antibodies
  • Antibodies, Monoclonal
  • 3107 Microbiology
  • 1103 Clinical Sciences