ST6GALNAC5 and breast cancer: A few years later, by stable transfection, MS and MS/MS analysis of the total glycosphingolipid content Vandermeersch et al. [168] have shown that ST6GalNAc5 expressing MDA-MB-231 epithelial-like breast cancer cell line, commonly used to model metastatic breast cancer, accumulate the GD1α ganglioside.