In Vitro Human Gastrointestinal Tract Simulation Systems: A Panoramic Review

Area of Science:

• Biomedical Engineering
• Gastroenterology
• Microbiology

Background:

• In vitro gastrointestinal (GI) tract systems are vital for research in probiotics, nutrition, and health, offering an alternative to ethically constrained in vivo studies.
• Existing in vitro models vary in complexity, from simple to dynamic, and single to multi-compartment systems, each with unique applications and limitations.

Approach:

• This review presents a comprehensive evolutionary timeline of in vitro GI model development.
• It offers insights into designing these models, particularly for researchers new to the field.
• Latest advancements and areas for improvement in current models are highlighted.

Key Points:

• Designing effective in vitro GI models requires mimicking the geometrical, anatomical, and mechanical features of the human GI tract, which remains a significant challenge.
• Advances in computer technology, artificial intelligence, and nanotechnology are poised to revolutionize future in vitro model development.
• In silico high-throughput technologies and miniaturization are crucial for cost-effective in vitro modeling and reducing reliance on in vivo studies.

Conclusions:

• Developing tailored in vitro GI models for specific applications is a complex, multifaceted endeavor.
• Overcoming the bio-mimicking challenges is key to advancing in vitro GI model efficacy.
• Future research should leverage emerging technologies to enhance the accuracy, cost-effectiveness, and scope of in vitro GI models.