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.

Archives of Microbiology
|February 2, 2026
PubMed

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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