@article{Stieh:2014:10.1186/s12977-014-0078-8,
author = {Stieh, D and King, DF and Klein, K and Liu, P and Shen, X and Hwang, KK and Ferrari, G and Montefiori, DC and Haynes, B and Pitisuttithum, P and Kaewkungwal, J and Nitayaphan, S and Rerks-Ngarm, S and Michael, NL and Robb, ML and Kim, JH and Denny, TN and Tomaras, GD and Shattock, RJ},
doi = {10.1186/s12977-014-0078-8},
journal = {Retrovirology},
title = {Aggregate complexes of HIV-1 induced by multimeric antibodies.},
url = {http://dx.doi.org/10.1186/s12977-014-0078-8},
volume = {11},
year = {2014}
}

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TY  - JOUR
AB  - BackgroundAntibody 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.ResultsThe 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.ConclusionsThese 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.
AU  - Stieh,D
AU  - King,DF
AU  - Klein,K
AU  - Liu,P
AU  - Shen,X
AU  - Hwang,KK
AU  - Ferrari,G
AU  - Montefiori,DC
AU  - Haynes,B
AU  - Pitisuttithum,P
AU  - Kaewkungwal,J
AU  - Nitayaphan,S
AU  - Rerks-Ngarm,S
AU  - Michael,NL
AU  - Robb,ML
AU  - Kim,JH
AU  - Denny,TN
AU  - Tomaras,GD
AU  - Shattock,RJ
DO  - 10.1186/s12977-014-0078-8
PY  - 2014///
SN  - 1742-4690
TI  - Aggregate complexes of HIV-1 induced by multimeric antibodies.
T2  - Retrovirology
UR  - http://dx.doi.org/10.1186/s12977-014-0078-8
UR  - http://hdl.handle.net/10044/1/18797
VL  - 11
ER  - 

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