Inter-kingdom signaling between gut microbiota and their host

Area of Science:

• Microbiology
• Immunology
• Gastroenterology

Background:

• The gut microbiome and host epithelial cells engage in complex crosstalk.
• Quorum sensing (QS) molecules from gut bacteria play a role in host-microbial symbiosis.
• Host mechanisms can influence bacterial QS and gut microbial composition.

Purpose of the Study:

• To explore the role of bacterial autoinducers (AIs) in host-microbial gut signaling.
• To investigate how the gut mucosa interacts with bacterial AIs.
• To identify novel therapeutic targets for gut microbiota-related diseases.

Main Methods:

• Review of recent studies on gut microbiome and host-microbial interactions.
• Analysis of bacterial autoinducer (AI) signaling pathways.
• Investigation of host immune cell modulation by bacterial AIs.

Main Results:

• Bacterial AIs can elicit proinflammatory effects and modulate immune cell activity (T lymphocytes, macrophages, dendritic cells, neutrophils).
• The gut mucosa can degrade bacterial AIs or secrete AI mimics, interfering with bacterial communication.
• Bacterial AIs and host hormones like epinephrine and noradrenaline may be interchangeable in gut signaling.

Conclusions:

• Inter-kingdom signaling between gut microbiota and host represents a novel area for therapeutic intervention.
• Understanding this crosstalk is crucial for managing gut microbiota-related conditions.
• Targeting bacterial QS and host-microbial communication pathways may offer future treatment strategies.