J Cell Sci 1977 Jan 01;27:227-43.

Lectin-mediated agglutination of amphibian embryonic cells.

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Dissociated blastula cells of Xenopus laevis are agglutinated with wheat germ agglutinin (WGA), Ricinus communis agglutinin (RCA), concanavalin A (Con A) and, to a lesser extent with soya bean agglutinin (SBA). They are not agglutinated with fucose-binding protein. Neuraminidase treatment of cells enhances their agglutinability with RCA and SBA, but has no effect on Con A- and WGA-mediated agglutinability. Treatment of cells with procaine, or xylocaine, has no effect on the cells' agglutinability or on the extrusion of lobopodia. Treatment with colchicine or cytochalasin B either separately or simultaneously has no effect on lectin-mediated agglutinability. Cells treated with cytochalasin B or colchicine and cytochalasin B simultaneously lack lobopodial extensions, while colchicine alone has no effect on these structures. Phenothiazine tranquillizers inhibit agglutination mediated by all of the above mentioned lectins. Lobopodial extensions are absent in cells treated with these compounds. Glutaraldehyde fixation inhibits RCA and WGA mediated agglutinability and reduces the Con A-mediated agglutinability. Results suggest that in this system microtubules and microfilaments are not involved in lectin-mediated agglutination.

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Species referenced: Xenopus laevis
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