期刊论文详细信息
Microbial Cell Factories
Lactobacillus plantarum possesses the capability for wall teichoic acid backbone alditol switching
Research
Sanae Okada1  Satoru Tomita2  Jerry M Wells3  Marjolein Meijerink4  Iris I van Swam5  Michiel Wels5  Peter A Bron6  Daniela M Remus7  Michiel Kleerebezem8 
[1] Department of Applied Biology and Chemistry, Faculty of Applied Bio-Science, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, 156-8502, Setagaya-ku, Tokyo, Japan;NIZO Food Research, Kernhemseweg 2, 6718ZB, Ede, The Netherlands;Department of Applied Biology and Chemistry, Faculty of Applied Bio-Science, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, 156-8502, Setagaya-ku, Tokyo, Japan;TI Food & Nutrition, Nieuwe Kanaal 9A, 6709 PA, Wageningen, The Netherlands;Host-Microbe Interactomics, Wageningen University, Marijkeweg 40, 6709 PG, Wageningen, The Netherlands;TI Food & Nutrition, Nieuwe Kanaal 9A, 6709 PA, Wageningen, The Netherlands;Host-Microbe Interactomics, Wageningen University, Marijkeweg 40, 6709 PG, Wageningen, The Netherlands;Netherlands Consortium for Systems Biology, Science Park 904, 1098 XH, AmsterdamThe Netherlands;TI Food & Nutrition, Nieuwe Kanaal 9A, 6709 PA, Wageningen, The Netherlands;NIZO Food Research, Kernhemseweg 2, 6718ZB, Ede, The Netherlands;TI Food & Nutrition, Nieuwe Kanaal 9A, 6709 PA, Wageningen, The Netherlands;NIZO Food Research, Kernhemseweg 2, 6718ZB, Ede, The Netherlands;Kluyver Centre for Genomics of Industrial Fermentation, Julianalaan 67, 2628 BC, Delft, The Netherlands;TI Food & Nutrition, Nieuwe Kanaal 9A, 6709 PA, Wageningen, The Netherlands;NIZO Food Research, Kernhemseweg 2, 6718ZB, Ede, The Netherlands;Laboratory for Microbiology, Wageningen University, Dreijenplein 10, 6703 HB, Wageningen, The Netherlands;TI Food & Nutrition, Nieuwe Kanaal 9A, 6709 PA, Wageningen, The Netherlands;NIZO Food Research, Kernhemseweg 2, 6718ZB, Ede, The Netherlands;Netherlands Consortium for Systems Biology, Science Park 904, 1098 XH, AmsterdamThe Netherlands;Laboratory for Microbiology, Wageningen University, Dreijenplein 10, 6703 HB, Wageningen, The Netherlands;
关键词: Lactobacillus plantarum;    Probiotic;    Wall teichoic acid;    Lipoteichoic acid;    tag;    Immunomodulation;   
DOI  :  10.1186/1475-2859-11-123
 received in 2012-03-02, accepted in 2012-07-28,  发布年份 2012
来源: Springer
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【 摘 要 】

BackgroundSpecific strains of Lactobacillus plantarum are marketed as health-promoting probiotics. The role and interplay of cell-wall compounds like wall- and lipo-teichoic acids (WTA and LTA) in bacterial physiology and probiotic-host interactions remain obscure. L. plantarum WCFS1 harbors the genetic potential to switch WTA backbone alditol, providing an opportunity to study the impact of WTA backbone modifications in an isogenic background.ResultsThrough genome mining and mutagenesis we constructed derivatives that synthesize alternative WTA variants. The mutants were shown to completely lack WTA, or produce WTA and LTA that lack D-Ala substitution, or ribitol-backbone WTA instead of the wild-type glycerol-containing backbone. DNA micro-array experiments established that the tarIJKL gene cluster is required for the biosynthesis of this alternative WTA backbone, and suggest ribose and arabinose are precursors thereof. Increased tarIJKL expression was not observed in any of our previously performed DNA microarray experiments, nor in qRT-PCR analyses of L. plantarum grown on various carbon sources, leaving the natural conditions leading to WTA backbone alditol switching, if any, to be identified. Human embryonic kidney NF-κB reporter cells expressing Toll like receptor (TLR)-2/6 were exposed to purified WTAs and/or the TA mutants, indicating that WTA is not directly involved in TLR-2/6 signaling, but attenuates this signaling in a backbone independent manner, likely by affecting the release and exposure of immunomodulatory compounds such as LTA. Moreover, human dendritic cells did not secrete any cytokines when purified WTAs were applied, whereas they secreted drastically decreased levels of the pro-inflammatory cytokines IL-12p70 and TNF-α after stimulation with the WTA mutants as compared to the wild-type.ConclusionsThe study presented here correlates structural differences in WTA to their functional characteristics, thereby providing important information aiding to improve our understanding of molecular host-microbe interactions and probiotic functionality.

【 授权许可】

Unknown   
© Bron et al.; licensee BioMed Central Ltd. 2012. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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