Synthetically Engineered Bacterial Extracellular Vesicles and IL-4-Encapsulated Hydrogels Sequentially Promote Osteoporotic Fracture Repair
Shanghai University · Organ Technologies (Japan) · +2 more institutions
Abstract
Osteoporosis (OP) is a systemic disease characterized by decreased bone density and quality, leading to fragile bones and osteoporotic fractures (OPF). Conventional treatments for OPF often exhibit limited therapeutic efficacy and significant side effects. Synthetic biology-based bacterial extracellular vesicles (BEVs) offer a safe and effective alternative for OPF treatment. Here, we constructed bioengineered BEVs loaded with pBMP-2-VEGF (BEVs-BP) and encapsulated them together with IL-4 in GelMA hydrogels to form IL-4/BEVs-BP@GelMA. Initially, IL-4 alleviated chronic inflammation by modulating immune cells, while BEVs-BP subsequently enhanced osteogenesis and vascularization by upregulating BMP-2 and VEGF…
Citation impact
- FWCI
- 26.50
- Percentile
- 100%
- References
- 75
Authors
16Topics & keywords
- Self-healing hydrogels
- Extracellular vesicles
- Materials science
- Extracellular
- Nanotechnology
- Fracture (geology)
- Cell biology
- Chemistry