Listen to Your Gut: Key Concepts for Bioengineering Advanced Models of the Intestine

Area of Science:

• Gastroenterology and Regenerative Medicine
• Biomaterials and Bioengineering

Background:

• The intestine's barrier function relies on epithelial cells and stromal tissue.
• Intestinal organoids model the epithelium but lack stromal complexity.
• Understanding the full microenvironment is crucial for disease modeling.

Purpose of the Study:

• To review strategies for in vitro replication of the intestinal microenvironment.
• To combine organoid biology with bioengineering for improved intestinal models.
• To discuss advancements for enhanced applications in clinical therapies.

Main Methods:

• Dissection of cellular and matrix components of the native intestine.
• Application of bottom-up self-organization and top-down bioengineering principles.
• Integration of organoid biology with materials science for microenvironment replication.

Main Results:

• Discussion of accessible chemistries mimicking the native extracellular matrix.
• Critical evaluation of bioengineering approaches to overcome current model limitations.
• Identification of strategies to replicate cellular, biochemical, and biophysical features.

Conclusions:

• Advanced in vitro intestinal models are essential for studying gut homeostasis and disease.
• Combining organoid technology with bioengineering offers a path to greater physiological relevance.
• Future developments promise broader applications for intestinal models in research and therapy.