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MedXY AI/MedXY News/Section: Gastroenterology

The Tryptophan Tug-of-War: How Faecalibacterium prausnitzii Counteracts Bacteroides fragilis in Colorectal Cancer

MedXY Editorial Team•Mar 8, 2026•Gastroenterology
colorectal cancergut microbiometryptophan metabolism

Highlights

The study identifies a critical microbe-metabolite-host regulatory axis in colorectal cancer (CRC) characterized by the interaction between Faecalibacterium prausnitzii and enterotoxigenic Bacteroides fragilis.

Faecalibacterium prausnitzii converts dietary tryptophan into picolinic acid (PIA) via the enzyme 2-amino-3-carboxymuconate semialdehyde decarboxylase.

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This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

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