HL 60 leukaemia cells chemically induced to differentiate retain some surface glycan features of undifferentiated cells not found in normal leukocytes.
Human HL 60 myeloid leukaemia cells have the potential to differentiate into either macrophage-like cells or granulocyte-like cells under the stimulus of chemical treatments. Using glycotechnology procedures, the glycosylation patterns of differentiated and undifferentiated HL 60 cells were analysed and compared with those of normal human peripheral monocytes. Both in vitro differentiations result in significant morphologic and functional changes, but we observed that the glycosylation patterns of undifferentiated and differentiated HL 60 cells exhibit several common glycosidic features that are absent in normal peripheral monocytes: the presence of (i) bisecting beta-N-acetylglucosamine attached at the C-4 position of the beta-mannose of polyantennary complex-type carbohydrate chains and (ii) complex-type carbohydrate chains enriched with non-reducing terminal beta-N-acetylglucosamine residues. Moreover, the three populations of HL 60 cells express small amounts of biantennary complex-type structures (< 6%), whereas normal peripheral monocytes expressed > 20% of such structures. Thus, the cell glycosylation pattern could reflect the pathological state of the HL 60 cells.
Pasqualetto
V
V
Unité INSERM 180, UFR Biomédicale, Paris, France.
Néel
D
D
Feugeas
J P
JP
Aubery
M
M
Derappe
C
C
D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D002454:Cell Differentiation / Q000187:drug effects / Q000502:physiology*; D002460:Cell Line; D002846:Chromatography, Affinity; D002851:Chromatography, High Pressure Liquid; D002852:Chromatography, Ion Exchange; D006020:Glycopeptides / Q000737:chemistry / Q000302:isolation & purification; D006098:Granulocytes / Q000166:cytology / Q000187:drug effects; D006801:Humans; D015473:Leukemia, Promyelocytic, Acute; D007962:Leukocytes / Q000502:physiology*; D008264:Macrophages / Q000166:cytology / Q000187:drug effects; D008562:Membrane Glycoproteins / Q000737:chemistry* / Q000302:isolation & purification / Q000378:metabolism*; D008969:Molecular Sequence Data; D009844:Oligosaccharides / Q000737:chemistry* / Q000302:isolation & purification; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology; D014407:Tumor Cells, Cultured
D006020:Glycopeptides; D008562:Membrane Glycoproteins; D009844:Oligosaccharides; D013755:Tetradecanoylphorbol Acetate