Abstract：
:The adhesion molecules E-selectin (ELAM-1) and P-selectin (GMP-140/CD62) recognize the carbohydrate motives sialyl-Le(x), sialyl-diLe(x), or sialyl-Lea, though with different affinity. We found that the melanoma cell line NKI-4 bound to E-selectin, but not to P-selectin. This melanoma cell line did not express sialyl-Le(x), but was positive for sialyl-diLe(x) and sialyl-Le(a). In contrast, 2 other melanoma cell lines, MeWo and SK-MEL-28, expressing either sialyl-diLe(x) or sialyl-Le(a) on the cell surface, bound neither E-selectin nor P-selectin. Transfection of the fucosyltransferases Fuc-TIII, Fuc-TIV, and Fuc-TV mediates cell surface expression of sialyl-Le(x) in many cell lines. We detected transcripts of the fucosyltransferases Fuc-TIII and Fuc-TV in 4 melanoma cell lines despite the absence of cell surface sialyl-Le(x). Our observations indicate that expression of fucosyltransferases (Fuc-TIII and -TV) and generation of cell-surface sialyl-diLe(x) are not sufficient to permit adherence to E-selectin or P-selectin. Furthermore, it seems possible that a yet undefined ligand different from sialyl-Le(x), sialyl-diLe(x), or sialyl-Le(a) enables melanoma cells to adhere to E-selectin.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Kunzendorf U,Krüger-Krasagakes S,Notter M,Hock H,Walz G,Diamantstein Tsubject
Has Abstractpub_date
1994-02-15 00:00:00pages
1109-12issue
4eissn
0008-5472issn
1538-7445journal_volume
54pub_type
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