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The hypoxic tissue microenvironment as a driver of mucosal inflammatory resolution
Ian M Cartwright1,2,3,4, Sean P Colgan1,2,3,4
1Division of Gastroenterology and Hepatology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States.
Frontiers in Immunology
|February 6, 2023
Summary
Inflammation resolution is promoted by hypoxia in the gut. This microenvironment, influenced by immune cells, is crucial for healing and preventing chronic conditions.
Area of Science:
- Immunology
- Gastroenterology
- Cell Biology
Background:
- Inflammation resolution is a critical biological process.
- The mucosal inflammatory microenvironment, especially in the gastrointestinal tract, is characterized by hypoxia.
- Hypoxia is enhanced during active inflammation due to cellular processes.
Purpose of the Study:
- To review the role of inflammatory hypoxia in driving mucosal inflammatory resolution.
- To explore how hypoxia impacts other microenvironmental factors involved in resolution.
Main Methods:
- Literature review focusing on molecular mechanisms of inflammation resolution.
- Analysis of the interplay between hypoxia, immune cells, and the tissue microenvironment.
- Discussion of evidence linking mucosal hypoxia to pro-resolving pathways.
Main Results:
- Mucosal hypoxia promotes active inflammation resolution via mechanisms like extracellular acidification and specialized pro-resolving lipid mediators.
- Innate immune cells play a key role in modulating the microenvironment for active resolution.
- Dysregulation of the inflammatory microenvironment can lead to loss of homeostasis and chronicity.
Conclusions:
- Inflammatory hypoxia is a significant driver of mucosal inflammatory resolution.
- Understanding these mechanisms is vital for addressing inflammatory diseases and promoting tissue homeostasis.
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