Cell surface glyceraldehyde-3-phosphate dehydrogenase (GAPDH) of Lactobacillus plantarum LA 318 recognizes human A and B blood group antigens

Res Microbiol. Nov-Dec 2008;159(9-10):685-91. doi: 10.1016/j.resmic.2008.07.005. Epub 2008 Aug 26.

Abstract

Lactobacillus plantarum LA 318 is a potential probiotic strain isolated from normal human intestinal tissue that shows high adhesion to human colonic mucin mediated by the bacterial cell surface glyceraldehyde-3-phosphate dehydrogenase (GAPDH). We report the adhesion mechanism of the lactobacilli is in part due to GAPDH binding to human ABO-type blood group antigens expressed on human colonic mucin (HCM). After periodate oxidation of HCM, adhesion of L. plantarum LA 318 bacterial cells significantly decreased compared to normal HCM. A BIACORE binding assay of GAPDH to blood group antigens was then performed. High binding was observed to A and B group antigens, while binding to H group antigen was lower (P<0.01). No interaction was observed between GAPDH and various monosaccharides. Furthermore, GAPDH binding to the B-trisaccharide biotinyl polymer (BP)-probe [Galalpha1-3 (Fucalpha1-2) Gal-] was significantly higher as compared to B-disaccharide, Lewis D-trisaccharide, 3-fucosyl-N-acetylglucosamine and alpha-N-acetylneuraminic acid BP-probes. The data suggests the trisaccharide structure is important in binding to the blood group antigens. The binding of GAPDH to HCM significantly decreased after incubation with NAD+. This suggests that the NAD binding domain on GAPDH may be related to binding to HCM.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • ABO Blood-Group System / chemistry
  • ABO Blood-Group System / metabolism*
  • Bacterial Adhesion
  • Colon / metabolism
  • Colon / microbiology*
  • Glyceraldehyde-3-Phosphate Dehydrogenases / metabolism*
  • Humans
  • Intestinal Mucosa / metabolism
  • Intestinal Mucosa / microbiology
  • Lactobacillus plantarum / enzymology*
  • Lactobacillus plantarum / isolation & purification
  • Lactobacillus plantarum / physiology*
  • Mucins / metabolism*
  • Probiotics / isolation & purification

Substances

  • ABO Blood-Group System
  • Mucins
  • Glyceraldehyde-3-Phosphate Dehydrogenases