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  • 1.
    Teneberg, Susanne
    et al.
    Halmstad University, School of Information Technology. Institute of Medical Biochemistry, Göteborg University, P. O. Box 440, SE 405 30 Göteborg, Sweden.
    Leonardsson, I.
    Department of Clinical Microbiology and Immunology, Örebro Medical Centre Hospital, SE 701 85 Örebro, Sweden.
    Karlsson, H.
    Department of General Surgery, Örebro Medical Centre Hospital, SE 701 85 Örebro, Sweden.
    Jovall, P.-A.
    Department of Medical Microbiology, Dermatology, and Infection, University of Lund, SE 223 62 Lund, Sweden.
    Ångström, J.
    Institute of Medical Biochemistry, Göteborg University, P. O. Box 440, SE 405 30 Göteborg, Sweden.
    Danielsson, D.
    Institute of Medical Biochemistry, Göteborg University, P. O. Box 440, SE 405 30 Göteborg, Sweden.
    Näslund, I.
    Institute of Medical Biochemistry, Göteborg University, P. O. Box 440, SE 405 30 Göteborg, Sweden.
    Ljungh, A.
    Institute of Medical Biochemistry, Göteborg University, P. O. Box 440, SE 405 30 Göteborg, Sweden.
    Wadström, T.
    Institute of Medical Biochemistry, Göteborg University, P. O. Box 440, SE 405 30 Göteborg, Sweden.
    Karlsson, K.-A
    Institute of Medical Biochemistry, Göteborg University, P. O. Box 440, SE 405 30 Göteborg, Sweden.
    Lactotetraosylceramide, a novel glycosphingolipid receptor for Helicobacter pylori, present in human gastric epithelium2002In: Journal of Biological Chemistry, ISSN 0021-9258, E-ISSN 1083-351X, Vol. 277, no 22, p. 19709-19719Article in journal (Refereed)
    Abstract [en]

    The binding of Helicobacterpylori to glycosphingolipids was examined by binding of 35S-labeled bacteria to glycosphingolipids on thin-layer chromatograms. In addition to previously reported binding specificities, a selective binding to a non-acid tetraglycosylceramide of human meconium was found. This H. pylori binding glycosphingolipid was isolated and, on the basis of mass spectrometry, proton NMR spectroscopy, and degradation studies, were identified as Galβ3GlcNAcβ3-Galβ4Glcβ1Cer (lactotetraosylceramide). When using non-acid glycosphingolipid preparations from human gastric epithelial cells, an identical binding of H. pylori to the tetraglycosylceramide interval was obtained in one of seven samples. Evidence for the presence of lactotetraosylceramide in the binding-active interval was obtained by proton NMR spectroscopy of intact glycosphingolipids and by gas chromatography-electron ionization mass spectrometry of permethylated tetrasaccharides obtained by ceramide glycanase hydrolysis. The lactotetraosylceramide binding property was detected in 65 of 74 H. pylori isolates (88%) Binding of H. pylori to lactotetraosylceramide on thin-layer chromatograms was inhibited by preincubation with lactotetraose but not with lactose. Removal of the terminal galactose of lactotetraosylceramide by galactosidase hydrolysis abolished the binding as did hydrazinolysis of the acetamido group of the N-acetylglucosamine. Therefore, Galβ3GlcNAc is an essential part of the binding epitope.

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