Understanding the factors regulating host-microbiome interactions using Caenorhabditis elegans

Area of Science:

• Microbiology
• Genetics
• Developmental Biology

Background:

• The Human Microbiome Project identified associations between microbes and health but lacked model systems for host-microbiome interaction studies.
• Caenorhabditis elegans, a long-established model organism, is now being studied with its natural gut microbiota.
• Wild nematode ecological sampling revealed genetic diversity and associated microbiota, paving the way for new research avenues.

Purpose of the Study:

• To highlight Caenorhabditis elegans as a suitable model system for dissecting host-microbiome interactions.
• To explore the use of C. elegans' core microbiome in studying host genetics, age, and stressors.
• To investigate molecular interactions between microbes and the animal gut using single microbiome species.

Main Methods:

• Utilizing the defined gut microbiome of C. elegans for host-microbiome interaction studies.
• Employing C. elegans as a model to study the impact of host genetics, age, and stressors on microbiome composition.
• Dissecting molecular interactions using single microbiome species within the C. elegans gut.

Main Results:

• C. elegans' associated gut microbiome is a defined, non-random community suitable for dissecting host-microbiome interactions.
• The model system is being used to study the influence of host factors on microbiome composition.
• Single microbial species are being used to elucidate molecular interactions within the animal gut.

Conclusions:

• Caenorhabditis elegans is a promising model for generating and testing hypotheses on host-microbiome interactions.
• This model system has the potential to uncover novel paradigms relevant to human health and disease.
• C. elegans offers a platform for discovering microbiome-altering health interventions.