Low affinity, antibody binding of an Escherichia coli-derived component
Författare
Summary, in English
This investigation describes the detection of a component in Escherichia coli capable of binding a large proportion of human antibody variable domains including otherwise highly monospecific antibodies induced by an in vivo antibody response. This interaction is of low affinity, but cross-linking of IgG molecules by, e.g. anti-immunoglobulin preparations, provides a sufficient degree of multivalency to promote a high avidity interaction. This binding which occurs both with K and h light chain-containing antibodies, appears to involve the variable region of human antibodies making it a superantigen-like activity. This is proposed based on the facts that: (i) different human antibodies of IgG1 isotype appear to bind to different extents suggesting that variable domain differences determine the binding activity; and (ii) addition of soluble antigen abrogates the interaction with the E. coli-derived molecule. Future studies of the nature and possible in vivo consequences of these interactions are warranted since any superantigen activity associated with this binding might affect the human immune response occurring as a consequence of E. coli infections.
Avdelning/ar
Publiceringsår
1996-02
Språk
Engelska
Sidor
161-168
Publikation/Tidskrift/Serie
FEMS Immunology and Medical Microbiology
Volym
13
Issue
2
Länkar
Dokumenttyp
Artikel i tidskrift
Förlag
Wiley-Blackwell
Nyckelord
- Antibody variable domain
- Antibody-binding molecule
- Escherichia coli
- Superantigen
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0928-8244