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Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect
Published on: September 11, 2015
Functional matrix vesicle replacement partially restores chemo-mechanical coupling in the aged bone niche
Liqiang Zhang1, Xiao Wei1, Ke Zhang2
1Department of Stomatology, Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China; Institute for Stem Cell & Regenerative Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China.
Cell Reports. Medicine
|July 16, 2026
Summary
OsteoVes, an extracellular organelle, rejuvenates aged bone cells by restoring mineral balance and enhancing cell signaling. This novel approach improves bone structure and function in aged animal models, offering a potential therapy for age-related bone loss.
Area of Science:
- Biomaterials Science
- Skeletal Biology
- Regenerative Medicine
Background:
- Skeletal aging is characterized by pyrophosphate/phosphate imbalance and impaired mechanotransduction, hindering bone repair.
- Dysfunctional matrix vesicles (MVs) contribute to these age-related skeletal deficits.
Purpose of the Study:
- To develop and evaluate OsteoVes, a novel extracellular organelle designed to mimic matrix vesicles and restore osteogenic function.
- To investigate OsteoVes's effects on aged human mesenchymal stem/stromal cells (MSCs) and in aged animal models.
Main Methods:
- OsteoVes was engineered to perform inorganic pyrophosphate (PPi) hydrolysis, nano-hydroxyapatite nucleation, and extracellular matrix anchoring.
- Aged human MSCs and MSCs from osteopenic/osteoporotic patients were treated with OsteoVes.
- Systemic administration of OsteoVes was performed in naturally aged mice, Alpl+/- progeroid mice, and aged rhesus macaques.
Main Results:
- OsteoVes restored the Pi/PPi balance, suppressed PPARG, promoted RUNX2 translocation, and enhanced osteogenic differentiation in aged MSCs.
- It activated mechanotransduction pathways (ITG/FAK-PIEZO1-JNK/c-JUN-RUNX2) and supported matrix mineralization in patient-derived MSCs.
- Systemic OsteoVes improved bone microarchitecture and mechanics in aged mice, showed activity in progeroid mice, and demonstrated safety and osteoanabolic effects in macaques.
Conclusions:
- Matrix vesicle dysfunction is an extracellular control point for skeletal aging.
- OsteoVes represents a promising therapeutic strategy for chemo-mechanical rescue in age-related bone diseases.
- This biomimetic organelle effectively rejuvenates aged bone cells and improves skeletal integrity.
Keywords:
OsteoVesPi/PPi homeostasisalkaline phosphatasechemo-mechanical couplingmatrix vesicle replacementmechanotransductionmesenchymal stem cellsosteometabolicskeletal agingMore Related Videos
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