Abstract

Glycosylation of proteins is an essential process in all eukaryotes. Mucin-type O-linked glycosylation is an evolutionarily conserved protein modification as a kind of glycosylation of proteins. The role of O-glycosylation was well documented in multiple cancers. While in breast cancer, the enzymes that catalyzed the initiation of O-glycosylation remained elusive. In this review, we briefly introduced the process of the initiation of O-glycosylation and summarized the roles of enzymes that catalyzed the initiation step of O-glycosylation in the breast cancer carcinogenesis, development, and progression. Finally, we summarized some attempts exploring the therapy against aberrant O-glycosylation.

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