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  • Title: Acidic glycosphingolipids of human amnion.
    Author: Asano K, Suzuki M, Handa S, Oshima M.
    Journal: J Biochem; 1991 Jan; 109(1):106-12. PubMed ID: 2016260.
    Abstract:
    Six major acidic glycosphingolipids were isolated from human amnion using DEAE Sephadex A-25 and silica beads column chromatography. The structures of these glycosphingolipids were determined by methylation analysis, TLC immunostaining and/or negative ion FAB-MS, and were concluded to be II3 alpha NeuAcLacCer(GM3), IV3 alpha NeuAcnLc4-Cer (sialyl[alpha 2-3]paragloboside), IV6 alpha NeuAcnLc4Cer (sialyl[alpha 2-6]paragloboside), IV3 alpha NeuAcIII4 alpha FucLc4Cer (sialyl Lea), VI3 alpha NeuAcnLc6Cer (i-ganglioside) and II3 alpha (NeuAc alpha 2----8NeuAc)LacCer (GD3). In addition, several minor glycosphingolipids were detected with specific monoclonal antibodies, including glycolipids with NeuAc alpha 2-3Gal beta 1-4GlcNAc-beta 1- or NeuAc alpha 2-6Gal beta 1-4GlcNAc beta 1- determinant. Our results show that the glycosphingolipids of human amnion are characterized by having mainly type II chain analogues and onco-fetal antigens.
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