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Bacillus coagulans SANK 70258 suppresses Enterobacteriaceae in the microbiota of ulcerative colitis in vitro and enhances butyrogenesis in healthy microbiota

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Abstract

The aim of this study was to clarify the effect of the spore-forming and lactic acid-producing probiotic strain, Bacillus coagulans SANK 70258, on human colonic microbiota of healthy subjects and ulcerative colitis patients. A model culture system was employed to construct the in vitro human colonic microbiota, to retain the bacterial species richness and simulate the patient’s disordered composition, from the fecal inoculum. Bacterial 16S rRNA gene sequencing confirmed that administration of B. coagulans SANK 70258 (at an initial concentration of 4 × 107-total cells/mL) suppressed bacteria related to the family Enterobacteriaceae in the microbiota models for both healthy subjects (P = 0.016) and ulcerative colitis patients (P = 0.023). In addition, administration of B. coagulans SANK 70258 increased bacteria related to the family Lachnospiraceae (P = 0.031), thereby enhancing butyrate production (P = 0.031) in the microbiota models of healthy subjects. However, these changes were not observed in the microbiota models of ulcerative colitis patients, likely owing to the low abundance of Lachnospiraceae species. This study demonstrates the potential of B. coagulans SANK 70258 to exhibit antimicrobial activity against harmful organisms in patients with ulcerative colitis, while improving the intestinal microenvironment by increasing butyrogenesis in healthy persons.

Key Points

B. coagulans SANK 70258 treatment reduced colonic Enterobacteriaceae species.

B. coagulans SANK 70258 treatment enhanced butyrogenesis in healthy individuals.

B. coagulans SANK 70258 treatment increased Lachnospiraceae in healthy persons.

B. coagulans SANK 70258 improves the colonic microenvironment in ulcerative colitis.

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Data availability

All raw sequence data generated in this study have been deposited in MG-RAST as “Model Culture System of Human Colonic Microbiota_Bacillus coagulans SANK 70258” under the accession numbers mgm4856204.3–mgm4856248.3.

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Acknowledgments

We are grateful to Ayami Fu**o, Yasunobu Takeshima, Yasuko Koura, Shoko Sakai, and Kimiko Enda (Kobe University) for their analytical support.

Funding

Our research was funded by the Japan Society for the Promotion of Science (JSPS) (Grant Numbers 18K05487 for K.S. and 17K12897 for D.S.).

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Authors and Affiliations

Authors

Contributions

KS, TM, RY, and AK contributed to the major design of this study. KS, DS, JI, and NH contributed to data acquisition and analysis related to the model culture system. KS, DS, TM, and RY contributed to microbiota analysis. KS, NH, TM, RY, and AK drafted and revised the manuscript. All authors approved the final version of the manuscript.

Corresponding author

Correspondence to Kengo Sasaki.

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Conflict of interest

The authors declare that they have no competing interests.

Ethical approval

All subjects provided written informed consent prior to specimen collection. The study was performed in accordance with the guideline of Kobe University Hospital and was approved by the institutional ethics review board of Kobe University. All methods used in this study were in accordance with the Declaration of Helsinki.

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Sasaki, K., Sasaki, D., Inoue, J. et al. Bacillus coagulans SANK 70258 suppresses Enterobacteriaceae in the microbiota of ulcerative colitis in vitro and enhances butyrogenesis in healthy microbiota. Appl Microbiol Biotechnol 104, 3859–3867 (2020). https://doi.org/10.1007/s00253-020-10506-1

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  • DOI: https://doi.org/10.1007/s00253-020-10506-1

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