Biomimetic hybrid scaffolds for engineering human tooth-ligament interfaces.

Biomimetic hybrid scaffolds for engineering human tooth-ligament interfaces.
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DOI:
10.1016/j.biomaterials.2010.04.027
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发表时间:
2010-08
期刊:
影响因子:
14
通讯作者:
Giannobile, William V.
Giannobile, William V.
中科院分区:
工程技术1区
文献类型:
--
作者:
Park, Chan Ho;Rios, Hector F.;Jin, Qiming;Bland, Megan E.;Flanagan, Colleen L.;Hollister, Scott J.;Giannobile, William V.

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重建大型口腔和颅面缺损的一个主要临床挑战是​​骨和韧带界面结构的新生。目前,对于因外伤、慢性感染或手术切除而破坏的牙齿支持组织的修复,口腔再生医学策略是不可预测的。在这里,我们展示了复合杂化聚合物支架的多尺度计算设计和制造,用于转基因人类细胞的靶向细胞移植,以在体内形成人类牙齿牙本质-韧带-骨复合物。新形成的组织展示了平行和倾斜取向纤维的界面生成,这些纤维在聚己内酯(PCL)-聚乙醇酸(PGA)设计的结构内生长和横穿,形成牙骨质样组织、韧带和骨骼结构。这种方法为定制牙周支架的临床实施提供了潜力,可以实现口腔、牙科和颅面工程应用所需的多组织界面的再生。
A major clinical challenge in the reconstruction of large oral and craniofacial defects is the neogenesis of osseous and ligamentous interfacial structures. Currently, oral regenerative medicine strategies are unpredictable for repair of tooth-supporting tissues destroyed as a consequence of trauma, chronic infection or surgical resection. Here, we demonstrate multi-scale computational design and fabrication of composite hybrid polymeric scaffolds for targeted cell transplantation of genetically modified human cells for the formation of human tooth dentin-ligament-bone complexes in vivo. The newly-formed tissues demonstrate the interfacial generation of parallel- and obliquely-oriented fibers that grow and traverse within the polycaprolactone (PCL)-poly(glycolic acid) (PGA) designed constructs forming tooth cementum-like tissue, ligament, and bone structures. This approach offers potential for the clinical implementation of customized periodontal scaffolds that may enable regeneration of multi-tissue interfaces required for oral, dental and craniofacial engineering applications.
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