Gut Microbiota-Host Interactions in Inborn Errors of Immunity

Area of Science:

• Immunology
• Gastroenterology
• Microbiome Research

Background:

• Inborn errors of immunity (IEI) are genetic disorders affecting immune defense and regulation.
• Gastrointestinal (GI) manifestations occur in about one-third of IEI patients, sometimes being the primary clinical feature.
• The gut microbiome is crucial for immune system development and function; dysbiosis can lead to intestinal pathogenesis.

Purpose of the Study:

• To review the establishment of gut immune homeostasis with commensal microbes.
• To explore how immune dysfunction in IEI disrupts these mechanisms.
• To discuss the role of the gut microbiome in IEI pathogenesis and potential therapeutic strategies.

Main Methods:

• Literature review on immune homeostasis in the gut.
• Analysis of mechanisms disrupted in primary immunodeficiencies.
• Summary of initial studies on gut microbiome in IEI patients.

Main Results:

• IEI-associated immune dysfunction and microbial dysbiosis can increase gut permeability and inflammation.
• Imbalances in microbiota-host interactions contribute to intestinal pathology in IEI.
• Early research indicates significant alterations in the gut microbiome of IEI patients.

Conclusions:

• Disrupted immune homeostasis and gut dysbiosis are key factors in IEI-related GI manifestations.
• The gut microbiome represents a potential therapeutic target for managing IEI.
• Further research is needed to fully elucidate and leverage the gut microbiome's role in IEI.