Abstract
Colorectal cancer (CRC) is driven by genomic alterations in concert with dietary influences, with the gut microbiome implicated as an effector in disease development and progression. While meta-analyses have provided mechanistic insight into patients with CRC, study heterogeneity has limited causal associations. Using multi-omics studies on genetically controlled cohorts of mice, we identify diet as the major driver of microbial and metabolomic differences, with reductions in α diversity and widespread changes in cecal metabolites seen in high-fat diet (HFD)-fed mice. In addition, non-classic amino acid conjugation of the bile acid cholic acid (AA-CA) increased with HFD. We show that AA-CAs impact intestinal stem cell growth and demonstrate that Ileibacterium valens and Ruminococcus gnavus are able to synthesize these AA-CAs. This multi-omics dataset implicates diet-induced shifts in the microbiome and the metabolome in disease progression and has potential utility in future diagnostic and therapeutic developments.
Original language | English (US) |
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Article number | 112997 |
Journal | Cell Reports |
Volume | 42 |
Issue number | 8 |
DOIs | |
State | Published - Aug 29 2023 |
Externally published | Yes |
Keywords
- CP: Cancer
- CP: Microbiology
- bile acids
- colorectal cancer
- conjugated bile acids
- high-fat diet
- metabolome
- microbiome
ASJC Scopus subject areas
- General Biochemistry, Genetics and Molecular Biology