Bile's Hidden Weapon: Modulating the Microbiome and Tumor Microenvironment

Area of Science:

• Microbiology
• Oncology
• Gastroenterology

Background:

• The human gut microbiome is essential for health but is influenced by bile acids.
• Bile acids, produced by the liver, modulate gut microbial composition and function.
• Alterations in the gut microbiome can impact the tumor microenvironment (TME).

Purpose of the Study:

• To review the complex interplay between bile, the gut microbiome, and the TME.
• To elucidate mechanisms driving cancer progression and therapy resistance via this axis.
• To highlight the potential for novel therapeutic strategies targeting the gut-bile-TME axis.

Main Methods:

• Literature review of existing research on bile, gut microbiome, and cancer.
• Analysis of mechanisms linking bile acid metabolism, microbiome alterations, and TME modulation.
• Synthesis of findings to understand cancer progression and therapeutic resistance.

Main Results:

• Bile acids shape the gut microbiome, influencing its function and promoting an immunosuppressive TME.
• Altered gut microbiome profiles driven by bile can enhance tumor growth and metastasis.
• The gut-bile-TME axis contributes to cancer cell behavior and resistance to therapies.
• Bile acids can increase antibiotic resistance within the gut microbiome.

Conclusions:

• The intricate relationship between bile, the gut microbiome, and the TME is a key driver of cancer progression and therapeutic resistance.
• Targeting the gut-bile-TME axis presents a promising avenue for developing novel cancer therapies.
• Further understanding of these interactions is critical for improving patient outcomes in oncology.