Intestinal Microbiota in Animal Models of Inflammatory Diseases

Area of Science:

• Microbiology
• Immunology
• Gastroenterology

Background:

• The intestinal microbiota is crucial for health and its alterations are linked to immune and metabolic disorders.
• Understanding microbe-host interactions and identifying disease-associated microbes are key research areas.

Purpose of the Study:

• To review experimental animal models for studying microbe-host interactions in inflammatory diseases, particularly inflammatory bowel disease (IBD).
• To compare the utility of complex colonized versus gnotobiotic animal models in microbiome research.

Main Methods:

• Review of experimental studies using animal models to investigate microbe-host interactions.
• Comparison of different animal model systems: complex colonized, gnotobiotic with monoassociation, simplified microbial consortia (SMC), and humanized models.

Main Results:

• Experimental animal models are essential for functional studies of microbe-host interactions and disease relevance.
• Gnotobiotic models offer controlled environments for dissecting microbial roles, while complex models reflect natural colonization.

Conclusions:

• Animal models are critical for understanding the role of the intestinal microbiota in inflammatory diseases like IBD.
• Choosing the appropriate animal model (gnotobiotic vs. complex colonized) is vital for advancing research on microbiome-host interactions.