Work

Biological significance of carbohydrate chains on monoclonal antibodies.

Year: 1983

Type: article

Abstract: We have prepared monoclonal hapten-specific mouse IgG2b antibodies depleted of asparagine-linked carbohydrate chains by treating the hybridoma cells with tunicamycin. The carbohydrate-deficient antibodies behaved in an identical manner to the normal antibodies with regard to fine antigen-binding reactivity (a Fab fragment feature) and protein A binding capacity [a feature requiring integrity at the CH2 and CH3 domain-interaction regions in the constant region of the heavy chain (CH)]. However, they lost the ability to activate complement, to bind to Fc receptors on macrophages, and to induce antibody-dependent cellular cytotoxicity. Furthermore, antigen-antibody complexes produced from such carbohydrate-deficient antibodies failed to be eliminated rapidly from the circulation. We conclude that removal of carbohydrate chains from IgG molecules may have a profound and highly select impact on the biological activity to these antibodies.

Source: Proceedings of the National Academy of Sciences

DOI: 10.1073/pnas.80.21.6632

Authors: M Nose, H Wigzell

Institution: Karolinska Institutet

Language: English

Topic: Monoclonal and Polyclonal Antibodies Research

Subfield: Immunology

Field: Immunology and Microbiology

Domain: Life Sciences

SDG: Good health and well-being

Open Access status: green

Funder: Cancerfonden