期刊
ADVANCED HEALTHCARE MATERIALS
卷 6, 期 5, 页码 -出版社
WILEY
DOI: 10.1002/adhm.201601112
关键词
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资金
- National Basic Research Program of China [2010CB944800]
- Nature Science Foundation of China [81271095, 31470947]
- International Cooperation Program of China [2013DFG32770, 2011DFA51970]
- Program for New Century Excellent Talents by the State Education Commission of China [NCET-13-0385]
- Key Technology R&D Program of Sichuan Province [13ZC0971, 2013GZX0158, 2013SZ0015, 13ZC0979]
- Basic Research Program of Sichuan Province [2013JY0019]
Tissue or organ regeneration using xenogeneic matrices is a promising approach to address the shortage of donor matrices for allotransplantation. Success of such approach has been demonstrated to correlate with macrophage-mediated fibrotic homeostasis and tissue remodeling. The previous studies have demonstrated that treated dentin matrix (TDM) could be a suitable bioactive substrate for allogeneic tooth root regeneration. This study constructed xenogeneic bioengineered tooth root (bio-root) via a combination of porcine TDM (pTDM) with allogeneic dental follicle cells (DFCs). Macrophage phenotypes are used to evaluate the remodeling process of xenogeneic bio-roots in vitro and in vivo. pTDM can facilitate odontoblast differentiation of human derived DFCs. Xenogeneic bio-roots in rat subcutaneous tissue prompt constructive response via M1 macrophage infiltration during early postimplantation stages and increase restorative M2 phenotype at later stages. After implantation of bio-roots into jaws of rhesus monkeys for six months, periodontal ligament-like fibers accompanied by macrophage polarization are observed, which are positive for COL-1, Periostin, beta III-tubulin and display such structures as fibroblasts and blood vessels. The reconstructed bio-root possesses biomechanical properties for the dissipation of masticatory forces. These results support that xenogeneic bio-root could maintain fibrotic homeostasis during remodeling process and highlight the potential application of xenogeneic matrices in regenerative medicine.
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