| Autor: |
Liu X; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States.; Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States., Astudillo Potes MD; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States.; Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States., Serdiuk V; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States.; Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States., Dashtdar B; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States.; Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States., Schreiber AC; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States.; Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States., Rezaei A; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States.; Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States., Miller AL 2nd; Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States., Hamouda AM; Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States., Shafi M; Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States., Elder BD; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States.; Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States.; Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States., Lu L; Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, Minnesota 55905, United States.; Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota 55905, United States. |
| Abstrakt: |
Spinal injuries or diseases necessitate effective fusion solutions, and common clinical approaches involve autografts, allografts, and various bone matrix products, each with limitations. To address these challenges, we developed an innovative moldable click chemistry polymer cement that can be shaped by hand and self-cross-linked in situ for spinal fusion. This self-cross-linking cement, enabled by the bioorthogonal click reaction, excludes the need for toxic initiators or external energy sources. The bioactivity of the cement was promoted by incorporating nanohydroxyapatite and microspheres loaded with recombinant human bone morphogenetic protein-2 and vascular endothelial growth factor, fostering vascular induction and osteointegration. The release kinetics of growth factors, mechanical properties of the cement, and the ability of the scaffold to support in vitro cell proliferation and differentiation were evaluated. In a rabbit posterolateral spinal fusion model, the moldable cement exhibited remarkable induction of bone regeneration and effective bridging of spine vertebral bodies. This bioactive moldable click polymer cement therefore presents a promising biomaterial for spinal fusion augmentation, offering advantages in safety, ease of application, and enhanced bone regrowth. |
