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Updated: Jul 11, 2026

Transformation of Probiotic Yeast and Their Recovery from Gastrointestinal Immune Tissues Following Oral Gavage in Mice
Published on: February 8, 2016
Immunomodulatory effects and gut microbiota modulation by brewer's yeast mannatide in cyclophosphamide-induced
Shuang Zhao1, Haidi Wang1, Shuo Zhao1
1College of Life Sciences , Qingdao University , Qingdao, 266071, China.
Abstract:
Yeast is a core microorganism long used in food industry processes such as brewing and baking. This study aimed to investigate the immunomodulatory potential of mannatide (MTE) derived from brewer's yeast in both cyclophosphamide (CTX)-induced immunosuppressed and untreated mice. Results showed that MTE administration alleviated body weight loss, restored organ morphology, and increased immune cytokines (TNF-α and IFN-γ) in immunosuppressed mice. In addition, MTE up-regulated tight junction proteins (Occludin, E-cadherin , and ZO-1) and resolved gut microbial dysbiosis by enriching beneficial bacteria. In untreated mice, MTE significantly increased beneficial bacteria without adverse effects. These findings suggest that MTE exerts immunoenhancing effects in both immunosuppressed and untreated mice by modulating immune parameters and gut microbiota. In conclusion, MTE represents a dietary supplement with immunomodulatory and prebiotic potential, providing a theoretical basis for its application in human health and nutrition.
Insights
Mannatide (MTE) from brewer's yeast enhances immune function and gut health. This yeast-derived compound shows potential as a dietary supplement for both healthy and immunosuppressed individuals.
Area of Science:
- Immunology
- Microbiology
- Nutrition Science
Background:
- Yeast is integral to food production (brewing, baking).
- Brewer's yeast contains bioactive compounds with potential health benefits.
- Understanding yeast-derived compounds' immunomodulatory effects is crucial for health applications.
Purpose of the Study:
- To investigate the immunomodulatory and prebiotic potential of mannatide (MTE) from brewer's yeast.
- To assess MTE's effects in cyclophosphamide (CTX)-induced immunosuppressed mice.
- To evaluate MTE's impact on gut microbiota and immune parameters in both healthy and immunosuppressed mice.
Main Methods:
- Administration of MTE to CTX-induced immunosuppressed mice and untreated mice.
- Assessment of body weight, organ morphology, and immune cytokines (TNF-α, IFN-γ).
- Analysis of gut microbiota composition and expression of tight junction proteins (Occludin, E-cadherin, ZO-1).
Main Results:
- MTE alleviated immunosuppression-induced body weight loss and restored organ morphology.
- MTE increased key immune cytokines (TNF-α, IFN-γ) in immunosuppressed mice.
- MTE normalized gut microbiota, enriched beneficial bacteria, and upregulated tight junction proteins.
Conclusions:
- MTE demonstrates significant immunomodulatory effects in immunosuppressed mice.
- MTE acts as a prebiotic, promoting beneficial gut bacteria in both healthy and immunosuppressed states.
- MTE shows promise as a dietary supplement for enhancing immune health and gut function.
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