ArticleInternational journal of molecular sciences2026
Characterization of Umbilical Cord Mesenchymal Stromal Cells Overexpressing Klotho and In Vitro Anti-Aging Efficacy of Their Derived Extracellular Vesicles.
Article in International journal of molecular sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Age-related degeneration remains a premier biomedical challenge, frequently underpinned by cellular senescence and stem cell dysfunction. Accumulating evidence suggests that umbilical cord mesenchymal stromal cell (UC-MSC)-derived extracellular vesicles (UC-EVs) and the longevity protein Klotho hold great promise as anti-aging biotherapeutics. Here, we strategically engineered UC-MSCs to overexpress Klotho and generated functional Klotho-enriched UC-EVs (KL-EVs). Our data demonstrated that genetic modification endowed UC-MSCs with prominent osteogenic differentiation potency and angiogenesis efficacy. More importantly, KL-EVs profoundly rescued multifaceted senescent phenotypes in both adult bone marrow mesenchymal stem cells (BMSCs) and human renal tubular epithelial cells (HK-2) in vitro. In particular, KL-EVs rescued the age-related differentiation bias of adult BMSCs by robustly prompting their osteogenic differentiation capacity. Taken together, we developed a novel type of UC-MSCs and isolated their EVs enriched with Klotho protein. This strategy integrated and enhanced the anti-aging effects of both entities in vitro, offering a new perspective for counteracting cellular senescence and alleviating age-associated degenerative alterations.
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