Lactobacilli binding human A-antigen expressed in intestinal mucosa

Hideaki Uchida, Hideki Kinoshita, Yasushi Kawai, Haruki Kitazawa, Koh Miura, Kenichi Shiiba, Akira Horii, Katsunori Kimura, Naoki Taketomo, Munehiro Oda, Takaji Yajima, Tadao Saito

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

Adherent lactic acid bacteria (LAB) in the human intestine were investigated using the surface plasmon resonance technique with the biosensor BIACORE-1000. Ninety-three LAB strains were isolated from human feces and evaluated for binding to human blood type-A antigen [GalNAcα1-3 (Fucα1-2) Gal-: A-trisaccharide] expressed in the intestinal mucosa. Eleven strains showed strong adherence to an A-trisaccharide biotinyl polymer (BP) probe, and slightly or no adherence to a B-trisaccharide BP probe. Four strains with high adherence (high A/B ratio) were selected and their surface layer proteins (SLPs) were evaluated for A-antigen ligand binding using BIACORE. The SLP from L. brevis strain OLL2772 showed a single band at ca. 48 kDa by SDS-PAGE analysis and it had a very strong adherence to the human A-antigen, as shown using an anti-A lectin blocking technique. A partial N-terminal sequence of the band showed strong homology to an S-layer protein of L. brevis ATCC8287T. The probiotic LAB binds to human blood type-A antigen expressed in the intestinal mucosa which may aid in colonization of the gut.

Original languageEnglish
Pages (from-to)659-665
Number of pages7
JournalResearch in Microbiology
Volume157
Issue number7
DOIs
Publication statusPublished - 2006 Sep

Keywords

  • Adherence
  • Human A-antigen
  • Lactic acid bacteria
  • Surface layer protein
  • Surface plasmon resonance

ASJC Scopus subject areas

  • Microbiology
  • Molecular Biology

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