Extracellular Vesicle/Macrophage Axis: Potential Targets for Inflammatory Disease Intervention

Area of Science:

• Immunology
• Cell Biology
• Pathology

Background:

• Extracellular vesicles (EVs) mediate intercellular communication and play a role in inflammatory diseases.
• Macrophage polarization into M1 (proinflammatory) and M2 (anti-inflammatory) phenotypes is crucial in disease pathogenesis.
• The EV/macrophage axis is increasingly recognized as a key factor in inflammatory disease development.

Purpose of the Study:

• To review the structure and function of the EV/macrophage axis.
• To summarize the biological roles of the EV/macrophage axis in various inflammatory diseases.
• To provide insights into the EV/macrophage axis as a therapeutic target for inflammatory conditions.

Main Methods:

• Literature review of studies investigating EVs and macrophage polarization in inflammatory diseases.
• Analysis of EV-mediated macrophage polarization in diseases such as mastitis, inflammatory bowel disease, acute lung injury, idiopathic pulmonary fibrosis, liver injury, asthma, and myocardial infarction.
• Synthesis of findings to elucidate the dual role of EVs in promoting or resolving inflammation.

Main Results:

• EVs can induce M1-like macrophage polarization, exacerbating diseases like inflammatory bowel disease and acute lung injury.
• Conversely, EVs can induce M2-like macrophage polarization, alleviating inflammation in conditions such as liver injury and myocardial infarction.
• The EV/macrophage axis demonstrates context-dependent effects on disease progression.

Conclusions:

• The EV/macrophage axis is a critical regulator of inflammatory responses in diverse diseases.
• EVs can either promote or ameliorate inflammation by directing macrophage polarization.
• Targeting the EV/macrophage axis presents a promising avenue for novel therapeutic interventions in inflammatory diseases.