Human intestinal epithelium in a dish: Current models for research into gastrointestinal pathophysiology

Area of Science:

• Gastroenterology and Hepatology
• Cell Biology
• Biomedical Engineering

Background:

• Chronic gastrointestinal diseases present complex pathogenesis due to intricate in vivo environments.
• Epithelial cell culture systems are crucial for studying gastrointestinal pathophysiology.
• Limitations exist in traditional cell culture models, including genetic instability and limited patient representation.

Purpose of the Study:

• To provide an overview of epithelial cell culture systems for investigating gastrointestinal disease pathophysiology.
• To compare the advantages and disadvantages of various cell culture models.
• To guide researchers in selecting appropriate models based on specific research needs.

Main Methods:

• Review of existing literature on two-dimensional (2D) and three-dimensional (3D) cell culture systems.
• Analysis of the characteristics of immortalized cell lines, primary cultures, and organoids.
• Discussion of hybrid approaches combining 2D and 3D technologies.

Main Results:

• Two-dimensional (2D) immortalized cell lines are long-lived but lack genetic stability and patient specificity.
• Primary cultures are patient-unique but have limited lifespan.
• Three-dimensional (3D) organoids mimic the gastrointestinal crypt-villus structure, are long-lived, genetically stable, and contain all cell lineages, though manipulation is challenging.

Conclusions:

• The choice of cell culture model depends on the specific gastrointestinal pathology and research focus.
• Combining 2D and 3D culture technologies offers potential solutions to overcome individual model limitations.
• Selecting the appropriate model, considering cell types and research objectives, is critical for accurate gastrointestinal disease research.