Extracellular vesicles in bone aging: therapeutic strategies and applications.

As global aging intensifies, the issue of bone aging has become increasingly prominent. Osteoporosis and osteoarthritis, which are common complications of bone aging, significantly impair patients' quality of life due to their high prevalence and disability rates, thereby presenting a major public health challenge. Extracellular vesicles (EVs), nanoscale particles released by cells, are regarded as an ideal platform for bone aging due to their high biocompatibility, ease of modification, and significant therapeutic efficacy. This review provides a comprehensive summary of the latest advancements in mammalian-, bacterial-, and plant-derived EVs, particularly in the context of bone aging. Furthermore, organoids, as lab-grown models replicating organ physiology, produce organoid-derived EVs that represent an especially promising avenue for therapeutic application. This review focuses on exploring potential therapeutic strategies that capitalize on the unique advantages of each EV type for treating bone aging. It is anticipated that a thorough comprehension of these EV types will unveil new avenues for bone aging treatment.