Cell death at the intestinal epithelial front line.

Area of Science:

• Gastroenterology and Cell Biology

Background:

• The intestinal epithelium is a vital single-cell layer crucial for nutrient absorption and barrier function.
• This tissue exhibits high proliferation rates and is prone to physiological and pathophysiological cell death.
• Dysregulated intestinal epithelial cell death impairs tissue function, impacting nutrient absorption and barrier integrity.

Purpose of the Study:

• To review cell death processes in the intestinal epithelium.
• To emphasize cell death mechanisms triggered by the tumour necrosis factor receptor family.

Main Methods:

• Literature review of cell death processes in the intestinal epithelium.
• Focus on physiological and pathophysiological cell death induction.
• Analysis of tumour necrosis factor receptor family-mediated cell death.

Main Results:

• Normal intestinal epithelial cell turnover involves shedding and apoptosis without compromising barrier integrity.
• Excessive cell death, induced by factors like irradiation, drugs, or inflammation, severely impairs intestinal functions.
• Tumour necrosis factor receptor family signaling is a key pathway in intestinal epithelial cell death.

Conclusions:

• Understanding intestinal epithelial cell death is critical for managing gastrointestinal diseases.
• Targeting tumour necrosis factor receptor family pathways may offer therapeutic strategies for intestinal disorders.
• Maintaining epithelial barrier integrity during cell death is essential for gut health.