title: Identification of possible chicken intestinal mucosa receptors for SEF21-fimbriated Salmonella enterica serovar Enteritidis.
abstract: In order to test whether glycosphingolipids (GSLs) on the chicken intestinal mucosa serve as a receptor for Salmonella enterica serovar Enteritidis with fimbriae, we analyzed neutral GSLs and gangliosides from chicken intestinal mucosa and investigated the binding of bacteria to neutral GSLs and gangliosides. Four kinds of neutral GSLs, designated as N-1 to N-4 and four kinds of gangliosides, named G-1 to G-4, were identified on high-performance thin-layer chromatography (HPTLC) plates. In TLC immunostaining tests, fimbriated S. Enteritidis bound only to glucosylceramide (GlcCer) standard, N-1, GM3 standard and G-1, but neither to N-2, N-3, N-4, nor to G-2, G-3 and G-4. Further, the bacterial binding to N-1 and G-1 was completely inhibited by preincubation of bacteria with anti-S. Enteritidis fimbriae (SEF) 21 antibody, but not by anti-SEF14 antibody. These results suggest that both GlcCer (N-1) and ganglioside GM3 (G-1) on the epithelial cell surfaces of chicken intestine act as receptors for fimbriated S. Enteritidis.
authors.affiliation: Laboratory of Veterinary Immunology, Division of Veterinary Science, Graduate School of Agriculture, Osaka Prefecture University, Sakai, 599-8531, Osaka, Japan. swatarai@vet.osakafu-u.ac.jp
authors.forename: Wenzhe
authors.initials: W
authors.lastname: Li
authors.forename: Shinobu
authors.initials: S
authors.lastname: Watarai
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kodama
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000378:metabolism; D000942:Antigens, Bacterial; D001422:Bacterial Adhesion / Q000502:physiology; D002645:Chickens / Q000378:metabolism*; D002855:Chromatography, Thin Layer / Q000662:veterinary; D036781:Fimbriae Proteins / Q000378:metabolism*; D010861:Fimbriae, Bacterial / Q000378:metabolism / Q000648:ultrastructure; D005732:Gangliosides / Q000378:metabolism; D006028:Glycosphingolipids / Q000378:metabolism; D007410:Intestinal Diseases / Q000378:metabolism / Q000382:microbiology / Q000662:veterinary*; D007413:Intestinal Mucosa / Q000378:metabolism* / Q000382:microbiology; D008854:Microscopy, Electron; D011201:Poultry Diseases / Q000378:metabolism / Q000382:microbiology*; D012481:Salmonella Infections, Animal / Q000378:metabolism / Q000382:microbiology*; D012477:Salmonella enteritidis / Q000254:growth & development* / Q000378:metabolism
chemical_list: D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D005732:Gangliosides; D006028:Glycosphingolipids; C110675:SEF21 protein, Salmonella enteritidis; D036781:Fimbriae Proteins