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Helicobacter pylori-antigen-binding fragments expressed on the filamentous M13 phage prevent bacterial growth
Linköping University, Faculty of Health Sciences. Linköping University, Department of Biomedicine and Surgery, Cell biology.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Biomedicine and Surgery, Cell biology.
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2000 (English)In: Biochimica et Biophysica Acta - General Subjects, ISSN 0304-4165, Vol. 1474, no 1, 107-113 p.Article in journal (Refereed) Published
Abstract [en]

Colonization of the human stomach by Helicobacter pylori is associated with the development of gastritis, duodenal ulcer, mucosa-associated lymphoid tissue (MALT) lymphoma, and gastric cancer. H. pylori-antigen-binding single-chain variable fragments (ScFv) were derived from murine hybridomas producing monoclonal antibodies and expressed as a g3p-fusion protein on a filamentous M13 phage. The recombinant ScFv-phage reacted specifically with a 30-kDa monomeric protein of a H. pylori surface antigen preparation and by means of immunofluorescence microscopy the phage was shown to bind to both the spiral and coccoid forms of the bacterium. In vitro, the recombinant phage exhibited a bacteriocidal effect and inhibited specifically the growth of all the six strains of H. pylori tested. When H. pylori was pretreated with the phage 10 min before oral inoculation of mice, the colonization of the mouse stomachs by the bacterium was significantly reduced (P<0.01). The results suggest that genetic engineering may be used to generate therapy-effective phages.

Place, publisher, year, edition, pages
2000. Vol. 1474, no 1, 107-113 p.
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Medical and Health Sciences
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URN: urn:nbn:se:liu:diva-24970DOI: 10.1016/S0304-4165(00)00005-2Local ID: 9381OAI: oai:DiVA.org:liu-24970DiVA: diva2:245294
Available from: 2009-10-07 Created: 2009-10-07 Last updated: 2011-01-14

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Sun, Yi-QianMårdh, BibbiMårdh, Sven

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