Bile Acid Signaling in Metabolic and Inflammatory Diseases and Drug Development

Area of Science:

• Biochemistry
• Metabolic Medicine
• Immunology

Background:

• Bile acids are primary end products of cholesterol catabolism.
• Hepatic bile acid synthesis significantly contributes to daily cholesterol turnover.
• Bile acids are essential for biliary lipid secretion and nutrient absorption.

Purpose of the Study:

• To explore the multifaceted roles of bile acids in host metabolism and immunity.
• To investigate the involvement of bile acids in the pathogenesis of various liver and gastrointestinal diseases.
• To highlight the therapeutic potential of targeting bile acid metabolism and signaling.

Main Methods:

• Analysis of bile acid roles in cholesterol catabolism.
• Investigation of bile acid interactions with nuclear receptors, G protein-coupled receptors, and the gut microbiome.
• Review of bile acid involvement in disease pathogenesis and therapeutic development.

Main Results:

• Bile acids regulate cholesterol turnover, biliary secretion, and lipid absorption.
• They critically modulate host metabolism, innate and adaptive immunity via receptor activation and microbiome interaction.
• Bile acids are implicated in cholestasis, metabolic dysfunction-associated steatotic liver disease, alcohol-associated liver disease, type-2 diabetes, and inflammatory bowel diseases.

Conclusions:

• Bile acids are key regulators of host metabolism, immunity, and gut microbiome.
• Their involvement in metabolic and inflammatory diseases is significant.
• Targeting bile acid metabolism and signaling presents a promising therapeutic strategy for chronic liver and gastrointestinal disorders.