Quantification of Proliferative and Dead Cells in Enteroids.

Area of Science:

• Gastroenterology and Cell Biology
• Intestinal barrier function and disease modeling

Background:

• The intestinal epithelium forms a critical barrier against luminal contents.
• Epithelial barrier dysfunction is linked to intestinal diseases like inflammatory bowel disease.
• Intestinal organoids (enteroids) offer an in vitro model for studying epithelial cell dynamics.

Purpose of the Study:

• To describe a simple protocol for quantifying proliferative and dead cells in cultured enteroids.
• To provide a tool for assessing drug impacts on intestinal epithelial cell proliferation and survival.

Main Methods:

• Culture of isolated mouse intestinal crypts into enteroids.
• Labeling of proliferating cells with 5-ethynyl-2 eal-deoxyuridine (EdU).
• Labeling of dead cells with propidium iodide and analysis via flow cytometry.

Main Results:

• Quantification of proliferative and dead intestinal epithelial cells within enteroids.
• Demonstration of a method to analyze cell death and proliferation rates.
• Establishment of a flow cytometry-based assay for enteroid cell populations.

Conclusions:

• The described method provides a straightforward approach to assess intestinal epithelial cell proliferation and death in vitro.
• This technique is valuable for drug screening and understanding mechanisms of intestinal barrier regulation.
• Enteroid cultures combined with flow cytometry offer a robust system for intestinal research.