Summary
Synthesis and expression of cell surface carbohydrates appear to be involved in recognition events associated with tumor invasion and metastasis. Thus, the potential of murine sarcoma L-1 cells to form experimental lung metastases after i.v. injection was assessed after inhibiting tumor cell protein glycosylation with tunicamycin, swainsonine, bromoconduritol, or 1-desoxynojirimycin. Incubation of sarcoma L-1 cells with 0.5 μg (or above) of these substances/ml medium for 20–24 h significantly inhibited lung colonization. Cytotoxic side effects or additional organ manifestations could not be found. Gas liquid chromatographic examinations of carbohydrates from treated L-1 cells indicated that sugar synthesis was evidently inhibited. These results suggest that specific glycan structures on tumor cells are required for expression of the metastatic phenotype.
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Pulverer, G., Beuth, J., Ko, H.L. et al. Glycoprotein modifications of sarcoma L-1 tumor cells by tunicamycin, swainsonine, bromoconduritol or 1-desoxynojirimycin treatment inhibits their metastatic lung colonization in Balb/c-mice. J Cancer Res Clin Oncol 114, 217–220 (1988). https://doi.org/10.1007/BF00417842
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DOI: https://doi.org/10.1007/BF00417842