Dissecting the molecular interactions between botanical extracts and the human gut microbiota

Area of Science:

• Microbiology
• Human Microbiome
• Bioactive Compounds

Background:

• Human gut microbes and humans have a long-standing symbiotic relationship.
• Many consumed plants and herbs contain bioactive compounds with health benefits.
• The effects of these botanicals on gut microbiota composition and function remain largely unknown.

Purpose of the Study:

• To investigate the molecular impact of botanicals on reconstructed human gut microbiota.
• To understand the taxonomic and functional changes induced by botanicals in the gut microbiome.
• To assess cross-feeding activities among gut microbes when utilizing botanical extracts.

Main Methods:

• In vitro bioreactor experiments using reconstructed human gut microbiota.
• Metagenomic and transcriptomic analyses to assess microbial changes.
• Cultivation of specific gut microbial taxa (e.g., Bacteroides spp.) on botanical extracts.

Main Results:

• Botanicals induced significant taxonomic and functional alterations in the gut microbiome.
• Cross-feeding interactions were observed among key gut microbial members.
• The impact of botanicals was dependent on the specific microbial taxa present.

Conclusions:

• Botanicals exert a molecular influence on the human gut microbiome.
• Trophic interactions are established within the gut microbial community in response to botanicals.
• The effects are context-dependent, varying with the existing microbial composition.