Inhibition of human immunodeficiency virus (HIV) infection in vitro by anticarbohydrate monoclonal antibodies: peripheral glycosylation of HIV envelope glycoprotein gp120 may be a target for virus neutralization

J E Hansen, H Clausen, C Nielsen, L S Teglbjaerg, L L Hansen, C M Nielsen, E Dabelsteen, L Mathiesen, S I Hakomori, J O Nielsen
1990 Journal of Virology  
Carbohydrate structures are often involved in the initial adhesion of pathogens to target cells. In the present study, a panel of anticarbohydrate monoclonal antibodies (MAbs) was tested for their ability to inhibit in vitro human immunodeficiency virus infectivity. MAbs against three different N-and 0-linked carbohydrate epitopes (Ley, Al, and sialyl-Tn) were able to block infection by cell-free virus as well as inhibit syncytium formation. Inhibition of virus infectivity was independent of
more » ... s independent of virus strain (HTLV111B or patient isolate SSI-002), the cell line used for virus propagation (H9 or MT4), and the cell type used as the infection target (MT4, PMC, or selected T4 lymphocytes). Inhibition was observed when viruses were preincubated with MAbs but not when cells were preincubated with MAbs before inoculation, and the MAbs were shown to precipitate 1251-labeled gpl20. The MAbs therefore define carbohydrate structures expressed by the viral envelope glycoprotein gpl20, indicating that glycans of the viral envelope are possible targets for immunotherapy or vaccine development or both.
doi:10.1128/jvi.64.6.2833-2840.1990 fatcat:soix25lonneorexfaszhazpwfe