Recent Advances in Exosome-Based Therapeutic Strategies for Acute Lung Injury: Mechanisms and Translational Advances

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Abstract
Inflammatory lung diseases are characterized by complex immune dysregulation and structural tissue damage, demanding the development of novel therapeutic and diagnostic strategies. Exosomes (Exos) have emerged as promising alternatives to address these challenges by serving as key mediators and effective therapeutic nanocarriers. This review systematically analyzes the multifunctional roles of Exos derived from various sources, including immune cells, mesenchymal stem cells (MSCs), lung structural cells, and non-mammalian sources such as plants and milk, in the context of inflammatory lung diseases. These vesicles modulate critical pathological processes, such as macrophage polarization, oxidative stress, and programmed cell death, by delivering functional cargos, including miRNAs and proteins. Studies demonstrating the antioxidant properties of Exos are classified, and their roles in attenuating oxidative stress-mediated lung injury are discussed. Furthermore, engineering and priming strategies, as well as airway-directed delivery methods such as nebulization, are reported to enhance therapeutic efficacy and targeting. Evidence also indicates that plant-derived Exos could be scalable and safer alternatives to mammalian cell-derived Exos. Collectively, Exos represent a next-generation platform for precision medicine, functioning as potent therapeutic agents and efficient drug-delivery systems for the treatment of complex inflammatory lung diseases.
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  • Wonkwang University

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