ArticleStem cell research & therapy2025
Exosomes derived from umbilical cord mesenchymal stem cells alleviate jaw bone marrow mesenchymal stem cells senescence and restore osteogenic differentiation potential.
Article in Stem cell research & therapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- A Review of Rejuvenation Strategies Targeting Mesenchymal Stem Cell Senescence and Their Impact on Bone Health and Regeneration.Current osteoporosis reports · 2026Review
- Cadherin 19 deficiency inhibits osteogenic differentiation and bone formation by regulating PI3K/AKT signaling pathway.Stem cell research & therapy · 2026Article
- A Review of Ionizing Radiation-Induced Senescence of Bone Marrow Mesenchymal Stem/Stromal Cells: Mechanisms and Therapeutic Strategies.Current issues in molecular biology · 2026Review
- Exosomes Derived from BMSCs Treated with CeONPs Ameliorate Radiation-Induced Jaw Bone Injury via miR-21-5p/STAT3 Axis-Mediated Osteogenesis and ROS Scavenging.Pharmaceutics · 2026Article
- miR-200a-3p in Human Umbilical Cord Mesenchymal Stem Cell-Derived Exosomes Attenuates UVB-Induced Skin Inflammatory Response and Oxidative Stress via Keap1-Nrf2 Pathway.Stem cells international · 2025Article
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Authors and funding
10 authors.
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Abstract
backgroundThe age-related functional decline of bone marrow mesenchymal stem cells significantly impairs bone regeneration capacity. Exosomes derived from umbilical cord mesenchymal stem cells (UCMSCs) have emerged as promising therapeutic agents in regenerative medicine and anti-aging research due to their bioactive cargo and low immunogenicity. This study investigated the rejuvenating potential of UCMSCs-derived exosomes (UCMSC-Exos) on senescent jaw bone marrow mesenchymal stem cells (JBMMSCs) and their ability to enhance bone repair in aged rats.
methodsSenescent JBMMSCs were treated with UCMSC-Exos, and their effects on cellular senescence, proliferation, migration, and osteogenic capability were assessed using senescence-associated beta-galactosidase (SA-β-gal) staining, CCK8 assays, scratch assays, alizarin red S staining, alkaline phosphatase staining, RT-qPCR, ELISA and western blotting. The underlying mechanisms were explored through western blot analysis of autophagy markers and PI3K/AKT/mTOR pathway. For in vivo evaluation, calvarial defect models were established in aged rats, and the bone repair efficacy of UCMSC-Exos was assessed by micro-CT, histological staining, immunohistochemical staining for OCN and ALP, and immunofluorescence staining for OPN and OSX.
resultsUCMSC-Exos treatment markedly attenuated cellular senescence in JBMMSCs, as demonstrated by decreased SA-β-gal-positive cells and downregulation of key senescence-associated proteins (p53, p21, and p16) and pro-inflammatory cytokines (IL-6 and TNF-α). The exosome-treated cells showed significant improvements in proliferative capacity, migratory ability, and osteogenic differentiation potential compared to untreated controls. Mechanistically, UCMSC-Exos restored autophagy through modulation of the PI3K/AKT/mTOR signaling pathway, as demonstrated by altered protein expression. In rat calvarial defect models, UCMSC-Exos treatment resulted in better bone repair in aged rats.
conclusionsThis study demonstrated that UCMSC-Exos could rejuvenate senescent JBMMSCs by activating autophagy via the regulation of PI3K/AKT/mTOR pathway, and enhance bone repair in aged rats. UCMSC-Exos hold potential as a cell-free therapeutic tool for anti-aging treatments and regenerative medicine, particularly for age-related skeletal disorders.
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