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International Journal of Cell Cloning, Vol 4, 464-471, Copyright © 1986 by AlphaMed Press

ORIGINAL ARTICLES

Expression of lectin receptors on the surface of granulocyte-macrophage progenitor cells (CFU-gm)

S Aizawa and M Tavassoli

It has been emphasized that specific bindings between membrane glycoproteins and membrane lectin-like substances are important in cell- to-cell interactions. We explored the surface of granulocyte-macrophage precursor cells (CFU-gm) by the differential agglutination technique. Enrichment of CFU-gm in the agglutinated fraction, containing the cells which have lectin receptors, from marrow treated with soybean agglutinin (SBA), peanut agglutinin (PNA) and concanavalin A (Con A), suggests the presence of reactive galactosyl and mannosyl residues on the surface of CFU-gm. On the other hand, wheat germ agglutinin (WGA), phytohemagglutinin (PHA) and ulex europaeus agglutinin (UEA), which bind to reactive N-acetylglucosamine, N-acetylgalactosamine and fucose, respectively, did not specifically agglutinate CFU-gm. Thus, reactive groups containing galactosyl and mannosyl structures on the surface of CFU-gm may possibly play a role in the process of cell-to-cell interactions between CFU-gm and marrow stromal cells.


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