Helicobacter pylori is a human pathogen associated with the development of gastric and duodenal ulcers and gastric adenocarcinoma. To test the hypothesis that the human Lewisb blood group antigen (Leb) functions as a receptor for the bacteria's adhesins and mediates its attachment to gastric pit and surface mucous cells, a human α-1,3/4-fucosyltransferase was expressed in these cell lineages in FVB/N transgenic mice. The fucosyltransferase directed production of the Leb epitope without any apparent effect on the proliferation and differentiation programs of this lineage. Moreover, clinical isolates of H. pylori bound to these cells in transgenic mice but not in their normal littermates. Binding was blocked by pretreatment of the bacteria with soluble Leb. This mouse model could be useful for examining the molecular pathogenesis of diseases caused by H. pylori infection. Creating novel pathways for production of specific oligosaccharides in selected cell lineages of transgenic animals represents an approach for examining the role of complex carbohydrates in regulating cellular differentiation and host-microbe interactions.
|Number of pages||5|
|Journal||Proceedings of the National Academy of Sciences of the United States of America|
|State||Published - Feb 28 1995|