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Lactobacillus plantarum strains attenuated DSS-induced colitis in mice by modulating the gut microbiota and immune response

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Abstract

Gut microbiota has become a new therapeutic target in the treatment of inflammatory Bowel Disease (IBD). Probiotics are known for their beneficial effects and have shown good efficacy in the clinical treatment of IBD and animal models of colitis. However, how these probiotics contribute to the amelioration of IBD is largely unknown. In the current study, the DSS-induced mouse colitis model was treated with oral administration of Lactobacillus plantarum strains to investigate their effects on colitis. The results indicated that the L. plantarum strains improved dysbiosis and enhanced the abundance of beneficial bacteria related to short-chain fatty acids (SCFAs) production. Moreover, L. plantarum strains decreased the level of pro-inflammatory cytokines, i.e., IL-17A, IL-17F, IL-6, IL-22, and TNF-α and increased the level of anti-inflammatory cytokines, i.e., TGF-β, IL-10. Our result suggests that L. plantarum strains possess probiotic effects and can ameliorate DSS colitis in mice by modulating the resident gut microbiota and immune response.

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Data availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request. Requests to access the datasets should be directed to CZ, email: chjzh@lzu.edu.cn School of Life Sciences, Lanzhou University, Lanzhou China.

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Abbreviations

CD:

Crohn’s disease

DSS:

Dextran sulfate sodium

ELISA:

Enzyme-linked immune-sorbent assay

FMT:

Fecal microbiota transplantation

IBD:

Inflammatory bowel disease

IL-6/10/22/17A/17F:

Interleukin-6/10/22/17A/17F

LAB:

Lactic acid bacteria

PBS:

Phosphate-buffered saline

SCFA:

Short-chain fatty acids

TGF-β:

Transforming growth factor-β

Th:

Helper T cell

TNF-α:

Tumor necrosis factor-α

Treg:

Regulatory T cell

UC:

Ulcerative colitis

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Acknowledgements

We acknowledge the Jiangsu Science and Technology Major Project and Gansu Science and Technology Major Project for financial support. The authors also wish to express their gratitude to Pro. Dr. Heping Zhang (Inner Mongolia Agricultural University) for providing the L. plantarum strains.

Funding

This work was supported by the Jiangsu Science and Technology Major Project [BA2016036], and Gansu Science and Technology Major Project [17ZD2FA009].

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Authors and Affiliations

Authors

Contributions

IK, JW and CZ designed the study; JW and IK performed the DSS experiment; TC and CL and NU collected and processed the samples for the next experiment; PY and XC tested the short-chain fatty acids; YB and LZ measured the cytokines; JW, IK, and YJ analyzed and interpreted the data; JW and IK wrote the manuscript; IK edit the manuscript and conducted the publishing process; TC gave the technical support and conceptual advice. CZ also guided and supervised us during the whole manuscript process. All authors have read and approved the final manuscript.

Corresponding author

Correspondence to Chunjiang Zhang.

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Ethics Approval for Animal Use

This study protocol was approved by the Ethics Committee of Animal Experiments and the institutional review board of Lanzhou University.

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Research involving Human Participants

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Conflicts of Interest

The authors Israr Khan et al. declare that they have no conflict of interest/The authors have no conflicts of interest to declare that are relevant to the content of this article.

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Khan, I., Wei, J., Li, A. et al. Lactobacillus plantarum strains attenuated DSS-induced colitis in mice by modulating the gut microbiota and immune response. Int Microbiol 25, 587–603 (2022). https://doi.org/10.1007/s10123-022-00243-y

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  • DOI: https://doi.org/10.1007/s10123-022-00243-y

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