Fusion of macrophages on an implant surface is associated with down-regulated expression of ligands for galectin-1 and -3 in the rat

Karel Smetana, Jan Slavík, Eva Vancová, János Fischer, Fu-Tong Liu, Maria Burchert, Xin Dong, Hans Joachim Gabius

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Galectins have a wide range of biological activities which are elicited by binding to appropriate glycoligands. Besides regulation of the expression of the galectins the extent of the presence of suitable binding sites will be relevant to infer the cellular responsiveness to this class of sugar receptors. Thus ligand presentation requires monitoring by the tissue lectin. We demonstrate the expression of galectin-3 by macrophages and foreign-body giant multinucleate cells colonizing a cellophane implant in the rat by the A1D6 monoclonal antibody. The extents of ligand presence are visualized in the same cells by biotinylated galectin-3 and also by galectin-1 which is produced by diverse mammalian cell types and widely distributed. Labeled mistletoe (VAA) and tomato (LEA) lectins are used as tools to assess the degree of similarity of the binding profile between endogenous and exogenous proteins. The presentation of α-galactosides is monitored with a natural immunoglobulin G subfraction obtained by two consecutive affinity chromatography steps. The binding of labeled galectins and plant lectins was significantly lower to foreign-body giant multinucleate cells than to mononuclear macrophages. The application of the α-galactoside-specific probe yielded no significant staining. The potential problem of epitope accessibility could be excluded by the concomitant positivity obtained with an IgG subfraction with selectivity to β-galactosides also obtained by affinity chromatography. These results provide no evidence for a role of α-galactosides for the binding of galectins in the rat macrophages colonizing the implant. The reduced level of expression of glycoligands for galectin-1 and -3 in foreign-body giant multinucleate cells in contrast with the mononuclear macrophages suggests an inhibitory influence of macrophage fusion on the expression of galectin-reactive molecules.

Original languageEnglish (US)
Pages (from-to)1799-1805
Number of pages7
JournalBiomaterials
Volume19
Issue number19
DOIs
StatePublished - Oct 1998

Keywords

  • Biocompatibility
  • Foreign-body reaction
  • Galectins
  • Granulomatous reaction
  • Lectins

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biomedical Engineering

Fingerprint Dive into the research topics of 'Fusion of macrophages on an implant surface is associated with down-regulated expression of ligands for galectin-1 and -3 in the rat'. Together they form a unique fingerprint.

  • Cite this

    Smetana, K., Slavík, J., Vancová, E., Fischer, J., Liu, F-T., Burchert, M., Dong, X., & Gabius, H. J. (1998). Fusion of macrophages on an implant surface is associated with down-regulated expression of ligands for galectin-1 and -3 in the rat. Biomaterials, 19(19), 1799-1805. https://doi.org/10.1016/S0142-9612(98)00092-1