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Lectin effects on HIV-1 infectivity
L Hammar1, I Hirsch, A Machado
1Department of Veterinary Virology, Biomedical Center, Uppsala, Sweden.
Annals of the New York Academy of Sciences
|June 6, 1994
Summary
Galanthus nivalis agglutinin (GNA) lectins neutralize HIV-1 by binding viral glycoproteins. This study shows GNA also blocks HIV-1 infection by acting on target cells.
Area of Science:
- Virology
- Immunology
- Biochemistry
Background:
- Lectins and antibodies targeting mannose residues are thought to inhibit HIV-1.
- These agents bind to viral glycoproteins, potentially neutralizing the virus.
Purpose of the Study:
- To investigate the mechanism of HIV-1 neutralization by Galanthus nivalis agglutinin (GNA).
- To determine if GNA affects HIV-1 infection at the target cell level.
Main Methods:
- Utilized GNA, a lectin specific for mannose residues.
- Assessed the impact of GNA on HIV-1 infection in target cells.
Main Results:
- GNA demonstrated neutralization of HIV-1.
- GNA was found to block HIV-1 infection at the target cell level, in addition to binding viral glycoproteins.
Conclusions:
- GNA possesses a dual mechanism for inhibiting HIV-1.
- GNA's action on target cells represents a novel pathway for HIV-1 neutralization.