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Published on: January 31, 2025
Autophagy and intestinal homeostasis
Khushbu K Patel1, Thaddeus S Stappenbeck
1Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri 63110, USA. kkpatel@wustl.edu
Annual Review of Physiology
|December 11, 2012
Summary
The autophagy pathway is crucial for mammalian gut health, influencing nutrient absorption, immune responses, and barrier integrity. Understanding autophagy is key to maintaining gastrointestinal homeostasis and preventing infection.
Area of Science:
- Gastrointestinal Biology
- Cellular Biology
- Immunology
Background:
- Mammalian nutrient absorption relies on a single-cell epithelial barrier, which is vulnerable to disruption.
- Host defense mechanisms, including specialized cells, immune cells, and inflammation, evolved to protect this barrier.
- The autophagy pathway plays a significant role in these defense and homeostatic functions.
Purpose of the Study:
- To elucidate the role of the autophagy pathway in mammalian intestinal biology.
- To understand how autophagy influences inflammation, immunity, and epithelial barrier function.
- To provide a foundation for understanding gastrointestinal homeostasis.
Main Methods:
- This study is a review and conceptual analysis of existing research on the autophagy pathway in the gastrointestinal tract.
- It synthesizes information on the interplay between autophagy, epithelial barrier function, immune responses, and nutrient absorption.
- No new experimental data were generated.
Main Results:
- The autophagy pathway is integral to maintaining the integrity and function of the intestinal epithelial barrier.
- Autophagy influences the development and function of both innate and adaptive immune cells in the gut.
- The pathway modulates inflammatory responses, ensuring they are appropriate to the threat level.
Conclusions:
- A comprehensive understanding of autophagy components and their functions is essential for comprehending gastrointestinal homeostasis.
- Targeting the autophagy pathway may offer therapeutic strategies for inflammatory and infectious diseases of the gut.
- Further research into autophagy's specific molecular mechanisms in the intestine is warranted.
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