Bifidobacterium animalis subsp. lactis modulates early-life immune response and gut metabolism.
- 2025-05-28
- Animal models and experimental medicine 8(6)
- Haoming Du
- Yiran Cai
- Lulu Shen
- Yuxing Zheng
- Lingling Zhao
- Ruibiao Hu
- Shan Jiang
- Jiajia Yuan
- Chengming Hu
- Qi Deng
- Jiaoyan Huang
- Jingbo Hu
- Yuexiang Wang
- Jing Tan
- Jiahui Chen
- Feitong Liu
- Yuanyuan Duan
- Haitao Niu
- PubMed: 40437776
- DOI: 10.1002/ame2.70034
Study Design
- Population
- GF mice
- Methods
- B. animalis subsp. lactis BB-12 was administered via gavage during early life; in the juvenile stage, changes in T-cell subsets in the spleen, thymus, and gut intraepithelial lymphocytes were assessed using spectral flow cytometry, and targeted metabolomics analysis of tryptophan metabolism and short-chain fatty acid pathways in colonic tissue was conducted
- Animal Study
Background
The maturation of the immune system is critical during early life, as it involves the differentiation, maturation, and establishment of immune tolerance of immune cells. This process is influenced not only by genetic factors but also by environmental factors, particularly the symbiotic microbiota. Bifidobacterium animalis subsp. lactis (BB-12), originally found in dairy products, is widely used in infant formula and dietary supplements. However, its role and mechanisms in immune development during early life remain unclear.Methods
Using GF mice as the experimental model, B. animalis subsp. lactis BB-12 was administered via gavage during early life. In the juvenile stage, changes in T-cell subsets in the spleen, thymus, and gut intraepithelial lymphocytes (IEL) were assessed using spectral flow cytometry. Additionally, targeted metabolomics analysis of tryptophan metabolism and short-chain fatty acid pathways in colonic tissue was conducted to explore how B. animalis subsp. lactis BB-12 influences the immune system through gut microbiota metabolism.Results
BB-12 effectively modulates the gut immune microenvironment, leading to beneficial changes in T-cell subsets in key immune tissues such as the spleen, thymus, and gut IELs. Metabolomics analysis further supports these findings by showing that BB-12 intervention greatly increased the production of tryptophan derivatives and acetic acid in the colon of GF mice.Conclusion
The findings provide theoretical evidence for the role of B. animalis subsp. lactis in immune system development and support its application in dietary supplements, suggesting potential as a component for infant immune health and in preventing immune-related diseases.Research Insights
BB-12 effectively modulates the gut immune microenvironment, leading to beneficial changes in T-cell subsets in key immune tissues such as the spleen, thymus, and gut IELs.
- Effect
- Beneficial
- Effect size
- Moderate
Metabolomics analysis further supports these findings by showing that BB-12 intervention greatly increased the production of tryptophan derivatives and acetic acid in the colon of GF mice.
- Effect
- Beneficial
- Effect size
- Moderate
BB-12 effectively modulates the gut immune microenvironment, leading to beneficial changes in T-cell subsets in key immune tissues such as the spleen, thymus, and gut IELs.
- Effect
- Beneficial
- Effect size
- Moderate
Metabolomics analysis further supports these findings by showing that BB-12 intervention greatly increased the production of tryptophan derivatives and acetic acid in the colon of GF mice.
- Effect
- Beneficial
- Effect size
- Moderate