Extracellular Vesicles in Gut-Bone Axis: Novel Insights and Therapeutic Opportunities for Osteoporosis

Area of Science:

• Biomedical Science
• Microbiology
• Cell Biology

Background:

• Osteoporosis (OP) is a bone disease characterized by low bone density and microstructural fragility.
• The gut-skeletal axis, influenced by gut microbiota (GM), plays a crucial role in bone health.
• Extracellular vesicles (EVs) are emerging as key mediators in the gut-bone communication.

Purpose of the Study:

• To propose novel gut-bone axis models: traditional, bacteria-derived EVs (BEVs)-based, and intestinal organoids-derived EVs (IOEVs)-based.
• To focus on the impact of BEVs-based and IOEVs-based gut-bone axes on osteoporosis.
• To provide a comprehensive summary of these gut-bone axes to elucidate the gut-bone relationship and offer new therapeutic strategies for OP.

Main Methods:

• Literature review and conceptual framework development.
• Analysis of existing research on gut microbiota, extracellular vesicles, and osteoporosis.
• Comparative analysis of traditional, BEVs-based, and IOEVs-based gut-bone axes.

Main Results:

• Extracellular vesicles (EVs) from gut bacteria (BEVs) act as a novel communication medium between the gut and bone.
• Intestinal organoids-derived EVs (IOEVs) represent another promising communication pathway with significant physiological effects.
• The study proposes three distinct gut-bone axis models, emphasizing the roles of BEVs and IOEVs in modulating bone health.

Conclusions:

• The BEVs-based and IOEVs-based gut-bone axes offer innovative therapeutic avenues for osteoporosis.
• Understanding these novel communication pathways is crucial for developing effective treatments for bone diseases.
• This work provides a new perspective on the gut-bone axis for future research and clinical applications in OP therapy.