Polyphenol-Mediated Gut Microbiota Modulation: Toward Prebiotics and Further

Area of Science:

• Microbiome research
• Nutritional biochemistry
• Gut health and disease

Background:

• Gut microbes metabolize plant polyphenols, influencing their bioavailability and host health benefits.
• Polyphenols modulate the gut microbiome through various mechanisms, including direct prebiotic effects and interactions with specific bacterial enzymes.
• While some bacteria directly transform polyphenols, others, like Akkermansia muciniphila, benefit indirectly from polyphenol presence.

Purpose of the Study:

• To explore how polyphenols promote beneficial gut bacteria and inhibit pathogens.
• To introduce the concept of polyphenols as 'duplibiotics' due to their dual action on the gut microbiota.
• To highlight the therapeutic potential of polyphenols in managing metabolic disturbances and gut dysbiosis.

Main Methods:

• Review of existing literature on polyphenol metabolism by gut microbes.
• Analysis of high-throughput sequencing, metabolomics, and omics data.
• In vivo studies examining bacterial responses to phenolic substrates.

Main Results:

• Polyphenols are transformed by bacterial enzymes (e.g., tannase) into bioactive metabolites.
• Certain beneficial bacteria, including Akkermansia muciniphila, are promoted by polyphenols, even without direct metabolic activity.
• Polyphenols exhibit antimicrobial properties, potentially creating niches for beneficial bacteria.

Conclusions:

• Polyphenols act as duplibiotics, exerting both prebiotic and antimicrobial effects on the gut microbiota.
• This dual action contributes to improved gut health and may mitigate metabolic disorders.
• Polyphenols represent a promising dietary strategy for therapeutic interventions against gut dysbiosis.