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Carl B

Carl Borrebaeck

Professor

Carl B

Real time analysis of antibody-antigen reaction kinetics.

Author

  • Ann-Christin Malmborg Hager
  • A. Michaëlsson
  • Mats Ohlin
  • B. Jansson
  • Carl Borrebaeck

Summary, in English

Surface plasmon resonance, i.e. detection of changes in refractive index on a surface, was used in a biosensor to evaluate the dissociation/association rate and affinity constants of human monoclonal IgG and IgM antibodies and Tab fragments. The results showed that an observed difference in affinity constants between intact and fragmented IgG anti-tetanus antibody was related to approximately 10-fold differences in dissociation rate constants, since the association rate constants were in the same range, i.e. 2–3×105 (m-1s-1). Affinity constants, as determined by conventional solid phase enzyme immunoassays, were substantially higher than the constants produced by the biosensor. Human monoclonal IgM anti-Tnα antibodies showed, furthermore, one order of magnitude higher association rate constants, as compared with the IgG antibodies, but since the dissociation rate constants were more than ten times higher, the resulting affinity constants of the anti-carbohydrate IgM antibodies were still somewhat lower than those of the IgG antibodies.

Department/s

  • Department of Immunotechnology

Publishing year

1992

Language

English

Pages

643-650

Publication/Series

Scandinavian Journal of Immunology

Volume

35

Issue

6

Document type

Journal article

Publisher

Wiley-Blackwell

Topic

  • Immunology in the medical area

Status

Published

ISBN/ISSN/Other

  • ISSN: 0300-9475