Sialylated glycolipid antigens on human leukemic cell lines

S. L. Spitalnik, P. F. Spitalnik, C. I. Civin, E. D. Ball, J. F. Schwartz, V. Ginsburg

Research output: Contribution to journalArticle

Abstract

Many granulocyte-specific mouse monoclonal antibodies recognize the carbohydrate sequence 3-fucosyllactosamine, Ga1β1-4[Fucα1-3]GlcNAc, which occurs in cell-surface glycolipids and glycoproteins. In general, these antibodies bind to blast cells from most patients with acute myeloblastic leukemia, but not to those with acute lymphocytic leukemia. Neuraminidase treatment, however, increases exposure of this antigen on both myeloid and lymphoid cells. In the present study, the glycolipids from 13 lymphoid and nonlymphoid human cell lines were examined for the presence of unsialylated and sialylated 3-fucosyllactosamine sequences using a thin-layer chromatography immunostaining neurominidase treatment. None of the six B-cell and T-cell lines had detectable neutral or sialylated glycolipid antigen. In contrast, six out of seven and five out of seven nonlymphoid cell lines had neutral and sialylated glycolipid antigens, respectively. These results agreed, in general, with those found by indirect immunofluorescence. They also represent the first direct demonstration of these sialylated glycolipids on human leukemic cells. Thus, in some cases increased antibody binding to neuraminidase-treated cells can be explained by the presence of sialylated glycolipid antigen.

Original languageEnglish (US)
Pages (from-to)643-647
Number of pages5
JournalExperimental Hematology
Volume14
Issue number7
StatePublished - 1986
Externally publishedYes

ASJC Scopus subject areas

  • Cancer Research
  • Cell Biology
  • Genetics
  • Hematology
  • Oncology
  • Transplantation

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  • Cite this

    Spitalnik, S. L., Spitalnik, P. F., Civin, C. I., Ball, E. D., Schwartz, J. F., & Ginsburg, V. (1986). Sialylated glycolipid antigens on human leukemic cell lines. Experimental Hematology, 14(7), 643-647.