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  • Title: Glycosphingolipids of normal bovine and enzootic bovine leukosis lymph node cells.
    Author: Watarai S, Yasuda T, Onuma M, Handa S.
    Journal: J Biochem; 1986 Oct; 100(4):1031-42. PubMed ID: 3029046.
    Abstract:
    We analyzed glycosphingolipids from normal lymph node cells of seven cattle and lymph node cells of eight cattle with enzootic bovine leukosis. The neutral glycosphingolipids and gangliosides were analyzed by thin-layer chromatography. Both normal and tumorous lymph node cells had GlcCer, LacCer, and GbOse3Cer as major neutral glycosphingolipids. In the ganglioside fraction, GM3 was the predominant component in both normal and tumorous lymph node cells, and another component, ganglioside Gx fraction, was also prominent in tumorous lymph node cells. The structure of this ganglioside Gx fraction was elucidated by thin-layer chromatography, sugar analysis, neuraminidase digestion, and permethylation studies. This ganglioside Gx fraction was found to be a mixture of four ganglioside species. The structures of individual gangliosides Gx (1 to 4) were characterized as follows. 1: GD3, NeuAc alpha 2-8NeuAc alpha 2-3Gal1-4Glc-Cer. 2: GD3, NeuAc alpha 2-8NeuGc alpha 2-3Gal1-4Glc-Cer. 3: GD3, NeuGc alpha 2-8NeuAc alpha 2-3Gal1-Glc-Cer. 4: GD3, NeuGc alpha 2-8NeuGc alpha 2-3Gal1-4Glc-Cer. These GD3 species may be formed as a result of the induced synthesis inassociation with malignant transformation.
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