Studies on the binding and phagocytic inhibition properties of antimacrophage globulin (AMG)

A. J. Schroit, R. Gallily

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Ring fluorescence of mouse macrophages, seen following incubation at 4°C with rabbit anti macrophage globulin (AMG) and fluorescein conjugated goat anti rabbit globulin, was transformed into aggregate fluorescence after subsequent maintenance at 37°. Studies based on the saturation binding of radiolabelled AMG indicated that between 400,000 and 800,000 heterologous antigenic determinants are present on the macrophage surface. AMG and F(ab')2 and Fab but not Fc fragments, could both bind to macrophages and inhibit phagocytosis; attachment of bacteria was however, unaffected. Kinetic experiments based on the assumption that phagocytosis is analogous to carrier mediated membrane transport indicated that non competitive inhibition is responsible for AMG impairment of macrophage phagocytic capacity. (Journal received: 30 May 1974)

Original languageEnglish (US)
Pages (from-to)971-981
Number of pages11
JournalImmunology
Volume26
Issue number5
StatePublished - Dec 1 1974

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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