An endogenous lectin, galectin-3 (ε{lunate}BP / Mac-2), potentiates IL-1 production by human monocytes

Kee Ching G Jeng, Luciano G. Frigeri, Fu-Tong Liu

Research output: Contribution to journalArticlepeer-review

103 Scopus citations


Galectin-3 is a member of a growing family of β-galactoside-binding animal lectins and previously designated as ε{lunate}BP (IgE-binding protein) by this laboratory and as Mac-2, CBP35, L-34 and L-29 by other researchers. While possible intracellular functions have been proposed for galectin-3, existing data also suggest an extracellular modulatory role of this lectin. For example, ε{lunate}BP/Mac-2 was found to be secreted by various cells and capable of activating mast cells, possibly through cross-linking of cell surface glycoproteins involved in cell activation. In this study, we showed that ε{lunate}BP bound to human monocytes via its lectin function. Furthermore, we found that ε{lunate}BP potentiated IL-1 production by monocytes in a manner that was inhibitable by the saccharide ligand of ε{lunate}BP. The results further support a role of this lectin in potentiating activities of inflammatory cells and thereby amplifying inflammatory responses.

Original languageEnglish (US)
Pages (from-to)113-116
Number of pages4
JournalImmunology Letters
Issue number3
StatePublished - 1994


  • Animal lectin
  • Galectin
  • IgE
  • Interleukin-1
  • Macrophage
  • Monocyte

ASJC Scopus subject areas

  • Immunology
  • Immunology and Allergy


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