Cell surface glycosaminoglycans are not involved in the adherence of Helicobacter pylori to cultured Hs 198.St human gastric cells, Hs 746T human gastric adenocarcinoma cells, or HeLa cells.
Hs 198.St cells (a line derived from normal human gastric tissue), Hs 746T cells (a line derived from human gastric adenocarcinoma), and HeLa cells were used together with 3H-labelled Helicobacter pylori, strain NCTC 11637 to determine if cell surface glycosaminoglycans could act as initial receptors for adherence of the bacteria. Although as much as 40% of the 3H-labelled bacteria adhered to monolayers of the cultured cells, removal of glycosaminoglycans by prior treatment of the cells with heparitinase, heparinase, or chondroitin ABC lyase had no effect in modifying the adherence. Prior addition of heparan sulfate, heparin, or chondroitin/dermatan sulfate to bacteria had no effect on adherence, nor were bacteria released when these same glycosaminoglycans or these same enzymes were added to cultures already containing adherent bacteria. These results indicated that neither heparan sulfate nor chondroitin/dermatan sulfate are involved as receptors in the initial adherence step of H. pylori to these cultured cells.
Edith Nourse Rogers Memorial Veterans Hospital, Bedford, MA 01730, USA.
H
H
Kawasaki
G
G
Sugumaran
J E
JE
Silbert
D001422:Bacterial Adhesion / Q000502:physiology*; D002460:Cell Line; D002808:Chondroitin Lyases / Q000378:metabolism; D006025:Glycosaminoglycans / Q000378:metabolism / Q000494:pharmacology; D006367:HeLa Cells; D016480:Helicobacter pylori / Q000378:metabolism*; D019763:Heparin Lyase; D006801:Humans; D008562:Membrane Glycoproteins / Q000378:metabolism*; D011133:Polysaccharide-Lyases / Q000378:metabolism; D011956:Receptors, Cell Surface / Q000737:chemistry / Q000378:metabolism; D013696:Temperature; D014357:Trypsin / Q000378:metabolism; D014407:Tumor Cells, Cultured
D006025:Glycosaminoglycans; D008562:Membrane Glycoproteins; D011956:Receptors, Cell Surface; D014357:Trypsin; D002808:Chondroitin Lyases; D011133:Polysaccharide-Lyases; D019763:Heparin Lyase; C021349:heparitinsulfate lyase