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Applied and Environmental Microbiology, August 2007, p. 5052-5054, Vol. 73, No. 15
0099-2240/07/$08.00+0     doi:10.1128/AEM.02390-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Germination of Bacillus cereus Spores Is Induced by Germinants from Differentiated Caco-2 Cells, a Human Cell Line Mimicking the Epithelial Cells of the Small Intestine{triangledown}

L. M. Wijnands,1* J. B. Dufrenne,1 F. M. van Leusden,1 and T. Abee2

Laboratory for Zoonoses and Environmental Microbiology (LZO), National Institute for Public Health and the Environment (RIVM), P.O. Box 1, 3720 BA Bilthoven, The Netherlands,1 Laboratory of Food Microbiology, Wageningen University and Research Centre, P.O. Box 8129, 6700 EV Wageningen, The Netherlands2

Received 11 November 2006/ Accepted 22 May 2007

Spores of 11 enterotoxigenic strains of Bacillus cereus isolated from foods and humans adhered with similar efficiencies to Caco-2 cells, whereas subsequent germination triggering was observed with only 8 of these strains. Notably, Hep-2 cells did not trigger germination, while spores of all strains displayed similar germination efficiencies in brain heart infusion broth.

* Corresponding author. Mailing address: Laboratory for Zoonoses and Environmental Microbiology (LZO), National Institute for Public Health and the Environment (RIVM), P.O. Box 1, 3720 BA Bilthoven, The Netherlands. Phone: 31 30 2742085. Fax: 31 30 2744434. E-mail: lucas.wijnands{at}rivm.nl

{triangledown} Published ahead of print on 1 June 2007.

Applied and Environmental Microbiology, August 2007, p. 5052-5054, Vol. 73, No. 15
0099-2240/07/$08.00+0     doi:10.1128/AEM.02390-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.





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Copyright © 2007 by the American Society for Microbiology. All rights reserved.