Carbohydrate-specific monoclonal antibodies bind to human granulocytes and stimulate antibody-dependent cellular cytotoxicity

P. F. Spitalnik, S. L. Spitalnik, J. M. Danley, A. F. Lopez, M. A. Vadas, C. I. Civin, V. Ginsburg

Research output: Contribution to journalArticlepeer-review

Abstract

Mouse monoclonal antibodies which specifically recognize human granulocytes are used to study the classification, differentiation, and function of these cells. Mouse monoclonal antibody WEM-G1 specifically binds to human neutrophils and eosinophils. It also affects granulocyte function by stimulating granulocyte-mediated antibody-dependent cellular cytotoxicity. Biochemical studies presented here show that WEM-G1 recognizes the sugar sequence 3-fucosyllactosamine, Galβ1-4[Fucα1-3]GlcNAc. This sequence is present in granulocyte glycolipids and in glycoproteins of average approximate Mr 165,000 and 105,000. WEM-G1 is thus similar to other monoclonal antibodies that recognize this sequence on granulocytes and various other cells. Some of these 3-fucosyllactosamine-specific antibodies affect several other granulocyte functions. Knowledge of the biochemical structure of the WEM-G1 antigen suggested testing granulocyte function with other monoclonal antibodies of similar specificity. Antibodies recognizing both the identical oligosaccharide structure and a related sequence, Galβ1-4GlcNAc-R, were also found to stimulate granulocyte-mediated antibody-dependent cellular cytotoxicity.

Original languageEnglish (US)
Pages (from-to)168-176
Number of pages9
JournalArchives of Biochemistry and Biophysics
Volume271
Issue number1
DOIs
StatePublished - May 15 1989

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Molecular Biology

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