Abstract：
:Cancer cells commonly display aberrant surface glycans and related glycoconjugate scaffolds. Compared with their normal counterparts, cancer cell glycans are variably produced and often structurally distinct, serving as biomarkers of cancer progression or as functional entities to malignancy. The glycan signature of a cancer cell is created by the collaborative activities of glycosyltransferases, glycosidases, nucleotide-sugar transporters, sulfotransferases, and glycan-bearing protein/lipid scaffolds. In a coordinated fashion, these factors regulate the synthesis of cancer cell glycans and thus are considered correlates of cancer cell behavior. Functionally, cancer cell glycans can serve as binding targets for endogenous lectin effectors, such as C-type selectins and S-type galectins. There has been a recent surge of important observations of the role of glycosytransferases, specifically α2,6 sialyltransferases, in regulating the length and lectin-binding features of serine/threonine (O)-glycans found on cancer cells. The capping activity of O-glycan-specific α2,6 sialyltransferases, in particular, has been found to regulate cancer growth and metastasis in a galectin-dependent manner. These findings highlight the functional importance of cancer cell O-glycans and related galectin-binding features in the virulent activity of cancer and raise the prospect of targeting cancer cell glycans as effective anticancer therapeutics.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Dimitroff CJdoi
10.1158/0008-5472.CAN-15-0834subject
Has Abstractpub_date
2015-08-15 00:00:00pages
3195-202issue
16eissn
0008-5472issn
1538-7445pii
0008-5472.CAN-15-0834journal_volume
75pub_type
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