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Correlation of probiotic Lactobacillus salivarius growth phase with its cell wall-associated proteome

Correlation of probiotic Lactobacillus salivarius growth phase with its cell wall-associated proteome
Correlation of probiotic Lactobacillus salivarius growth phase with its cell wall-associated proteome
Lactobacillus salivarius subsp. salivarius UCC118 is a probiotic bacterium that was originally isolated from human intestinal tissues and was subsequently shown in a pilot study to alleviate symptoms associated with mild-moderate Crohn's disease. Strain UCC118 can adhere to animal and human intestinal tissue, and to both healthy and inflamed ulcerative colitis mucosa, irrespective of location in the gut. In this study, an enzymatic technique has been combined with proteomic analysis to correlate bacterial growth phase with the presence of factors present in the cell wall of the bacterium. Using PAGE electrophoresis, it was determined that progression from lag to log to stationary growth phases in vitro correlated with increasing prominence of an 84 kD protein associated with in vitro adherence ability. Isolated proteins from the 84 kD band region were further separated by two-dimensional electrophoresis, resolving this band into 20 individual protein spots at differing isoelectric points. The protein moieties were excised, trypsin digested and subjected to tandem mass spectrometry. The observed proteins are analogous to those reported to be associated with the Listeria monocytogenes cell-wall proteome, and include DnaK, Ef-Ts and pyruvate kinase. These data suggest that at least some of the beneficial attributes of probiotic lactobacilli, and in particular this strain, may be due to nonpathogenic mimicry of pathogens and potentially be mediated through a form of attenuated virulence
0378-1097
153-159
Kelly, Peter
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Maguire, Patricia B.
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Bennett, Mary
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Fitzgerald, Desmond J.
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Edwards, Richard J.
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Thiede, Bernd
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Treumann, Achim
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Collins, J. Kevin
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O'sullivan, Gerald C.
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Shanahan, Fergus
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Dunne, Colum
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Kelly, Peter
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Maguire, Patricia B.
887e5f72-519c-4fc7-b512-1156140b369f
Bennett, Mary
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Fitzgerald, Desmond J.
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Edwards, Richard J.
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Thiede, Bernd
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Treumann, Achim
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Collins, J. Kevin
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O'sullivan, Gerald C.
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Shanahan, Fergus
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Dunne, Colum
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Kelly, Peter, Maguire, Patricia B., Bennett, Mary, Fitzgerald, Desmond J., Edwards, Richard J., Thiede, Bernd, Treumann, Achim, Collins, J. Kevin, O'sullivan, Gerald C., Shanahan, Fergus and Dunne, Colum (2005) Correlation of probiotic Lactobacillus salivarius growth phase with its cell wall-associated proteome. FEMS Microbiology Letters, 252 (1), 153-159. (doi:10.1016/j.femsle.2005.08.051).

Record type: Article

Abstract

Lactobacillus salivarius subsp. salivarius UCC118 is a probiotic bacterium that was originally isolated from human intestinal tissues and was subsequently shown in a pilot study to alleviate symptoms associated with mild-moderate Crohn's disease. Strain UCC118 can adhere to animal and human intestinal tissue, and to both healthy and inflamed ulcerative colitis mucosa, irrespective of location in the gut. In this study, an enzymatic technique has been combined with proteomic analysis to correlate bacterial growth phase with the presence of factors present in the cell wall of the bacterium. Using PAGE electrophoresis, it was determined that progression from lag to log to stationary growth phases in vitro correlated with increasing prominence of an 84 kD protein associated with in vitro adherence ability. Isolated proteins from the 84 kD band region were further separated by two-dimensional electrophoresis, resolving this band into 20 individual protein spots at differing isoelectric points. The protein moieties were excised, trypsin digested and subjected to tandem mass spectrometry. The observed proteins are analogous to those reported to be associated with the Listeria monocytogenes cell-wall proteome, and include DnaK, Ef-Ts and pyruvate kinase. These data suggest that at least some of the beneficial attributes of probiotic lactobacilli, and in particular this strain, may be due to nonpathogenic mimicry of pathogens and potentially be mediated through a form of attenuated virulence

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Published date: 2005

Identifiers

Local EPrints ID: 143473
URI: https://eprints.soton.ac.uk/id/eprint/143473
ISSN: 0378-1097
PURE UUID: 93cc302c-0409-492e-bb52-4f01b7860323

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Date deposited: 30 Jun 2010 14:15
Last modified: 18 Jul 2017 23:09

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Contributors

Author: Peter Kelly
Author: Patricia B. Maguire
Author: Mary Bennett
Author: Desmond J. Fitzgerald
Author: Richard J. Edwards
Author: Bernd Thiede
Author: Achim Treumann
Author: J. Kevin Collins
Author: Gerald C. O'sullivan
Author: Fergus Shanahan
Author: Colum Dunne

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