Polyphenols as next-generation prebiotics targeting intestinal mucosal tolerance

Area of Science:

• Nutrition Science
• Immunology
• Microbiome Research

Background:

• Polyphenols are known for antioxidant and anti-inflammatory effects.
• Emerging research suggests polyphenols function as prebiotic phytochemicals with immunomodulatory capacity.

Purpose of the Study:

• To reframe polyphenols as next-generation prebiotics.
• To explore their multi-layered mechanisms of action beyond microbial growth.
• To investigate their role in microbiota-mediated intestinal mucosal tolerance.

Main Methods:

• Review of current scientific literature on polyphenols and the gut microbiome.
• Analysis of mechanisms linking polyphenol bioavailability, microbial metabolism, and immune responses.
• Examination of polyphenol-derived metabolites as postbiotics.

Main Results:

• Polyphenols exert prebiotic effects through complex mechanisms involving low systemic bioavailability.
• Polyphenol metabolites act as postbiotics, modulating microbial outputs like extracellular vesicles.
• These actions regulate tolerogenic immune responses, impacting conditions like inflammatory bowel disease, diabetes, and food allergies.

Conclusions:

• Polyphenols represent a distinct class of prebiotics targeting immune pathways.
• Polyphenol interventions can be tailored for precision immunonutrition based on microbial functionality and individual metabotypes.
• Further research is needed to fully leverage polyphenols for managing immune-related diseases.