A mannose-specific adherence mechanism in Lactobacillus plantarum conferring binding to the human colonic cell line HT-29.

Adlerberth, Ingegerd,1959Gothenburg University,Göteborgs universitet,Institutionen för laboratoriemedicin, Avdelningen för klinisk immunologi,Institute of Laboratory Medicine, Dept of Clinical Immunology (författare)

Two Lactobacillus plantarum strains of human intestinal origin, strains 299 (= DSM 6595) and 299v (= DSM 9843), have proved to be efficient colonizers of the human intestine under experimental conditions. These strains and 17 other L. plantarum strains were tested for the ability to adhere to cells of the human colonic cell line HT-29.L.plantarum 299 and 299v and nine other L. plantarum strains, including all six strains that belong to the same genetic subgroup as L. plantarum 299 and 299v, adhered to HT-29 cells in a manner that could be inhibited by methyl-alpha-D-mannoside. The ability to adhere to HT-29 cells correlated with an ability to agglutinate cells of Saccharomyces cerevisiae and erythrocytes in a mannose-sensitive manner and with adherence to D-mannose-coated agarose beads. L. plantarum 299 and 299v adhered to freshly isolated human colonic and ileal enterocytes, but the binding was not significantly inhibited by methyl-alpha-D-mannoside. Periodate treatment of HT-29 cells abolished mannose-sensitive adherence, confirming that the cell-bound receptor was of carbohydrate nature. Proteinase K treatment of the bacteria also abolished adherence, indicating that the binding involved protein structures on the bacterial cell surface. Thus, a mannose-specific adhesin has been identified in L. plantarum; this adhesin could be involved in the ability to colonize the intestine.

MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Mikrobiologi inom det medicinska området hsv//swe
MEDICAL AND HEALTH SCIENCES Basic Medicine Microbiology in the medical area hsv//eng
NATURVETENSKAP Biologi Mikrobiologi hsv//swe
NATURAL SCIENCES Biological Sciences Microbiology hsv//eng
Adhesins
Bacterial
metabolism
Animals
Bacterial Adhesion
physiology
Cell Line
Colon
microbiology
Escherichia coli
cytology
physiology
Hemagglutination
Humans
Lactobacillus
cytology
physiology
Mannose
metabolism
Oxidation-Reduction
Periodic Acid
Saccharomyces cerevisiae
cytology
metabolism
Sepharose

Ahrne, S (författare)
Johansson, M L (författare)
Molin, G (författare)
Hanson, Lars Åke,1934Gothenburg University,Göteborgs universitet,Institutionen för laboratoriemedicin, Avdelningen för klinisk immunologi,Institute of Laboratory Medicine, Dept of Clinical Immunology(Swepub:gu)xhlart (författare)
Wold, Agnes E,1955Gothenburg University,Göteborgs universitet,Institutionen för laboratoriemedicin, Avdelningen för klinisk immunologi,Institute of Laboratory Medicine, Dept of Clinical Immunology(Swepub:gu)xwolag (författare)
Göteborgs universitetInstitutionen för laboratoriemedicin, Avdelningen för klinisk immunologi (creator_code:org_t)

Av författaren/redakt...: Adlerberth, Inge ...; Ahrne, S; Johansson, M L; Molin, G; Hanson, Lars Åke ...; Wold, Agnes E, 1 ...

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MEDICIN OCH HÄLSOVETENSKAP: MEDICIN OCH HÄLS ...; och Medicinska och f ...; och Mikrobiologi ino ...

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