AEM
Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrowReprints and Permissions
Right arrow Copyright Information
Right arrow Books from ASM Press
Right arrow MicrobeWorld
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Granato, D.
Right arrow Articles by Brassart, D.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Granato, D.
Right arrow Articles by Brassart, D.
Agricola
Right arrow Articles by Granato, D.
Right arrow Articles by Brassart, D.

 Previous Article  |  Next Article 

Applied and Environmental Microbiology, March 1999, p. 1071-1077, Vol. 65, No. 3
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.

Cell Surface-Associated Lipoteichoic Acid Acts as an Adhesion Factor for Attachment of Lactobacillus johnsonii La1 to Human Enterocyte-Like Caco-2 Cells

Dominique Granato,1,* Fabienne Perotti,1 Isabelle Masserey,1 Martine Rouvet,1 Mireille Golliard,1 Alain Servin,2 and Dominique Brassart1,dagger

Nestlé Research Center, CH-1000 Lausanne 26, Switzerland,1 and CJF 94.07 INSERM, UFR de Pharmacie, Université Paris XI, F-92296 Châtenay-Malabry, France2

Received 22 May 1998/Accepted 8 December 1998

The influence of pH on the adhesion of two Lactobacillus strains to Caco-2 human intestinal cells was investigated. One strain, Lactobacillus johnsonii La1, was adherent at any pH between 4 and 7. The other one, L. acidophilus La10, did not attach to this cell line under the same experimental conditions. On the basis of these results, we used the monoclonal antibody technique as a tool to determine differences on the surface of these bacteria and to identify a factor for adhesion. Mice were immunized with live La1, and the hybridomas produced by fusion of spleen cells with ONS1 cells were screened for the production of antibodies specific for L. johnsonii La1. A set of these monoclonal antibodies was directed against a nonproteinaceous component of the L. johnsonii La1 surface. It was identified as lipoteichoic acid (LTA). This molecule was isolated, chemically characterized, and tested in adhesion experiments in the same system. The adhesion of L. johnsonii La1 to Caco-2 cells was inhibited in a concentration-dependent way by purified LTA as well as by L. johnsonii La1 culture supernatant that contained LTA. These results showed that the mechanism of adhesion of L. johnsonii La1 to human Caco-2 cells involves LTA.

* Corresponding author. Mailing address: Nestlé Research Center, P.O. Box 44, Vers-chez-les-Blanc, CH-1000 Lausanne 26, Switzerland. Phone: 41 21 785 8685. Fax: 41 21 785 89 25. E-mail: dominique.granato{at}chlsnr.nestrd.ch.

dagger Present address: Lactalis Research and Development, 53000 Laval, France.

Applied and Environmental Microbiology, March 1999, p. 1071-1077, Vol. 65, No. 3
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.


This article has been cited by other articles:



Home Help [Feedback] [For Subscribers] [Archive] [Search] [Contents]
J. Bacteriol. Microbiol. Mol. Biol. Rev. Eukaryot. Cell All ASM Journals

Copyright © 1999 by the American Society for Microbiology. All rights reserved.