Scaffold Structural Microenvironmental Cues to Guide Tissue Regeneration in Bone Tissue Applications.

Scaffold Structural Microenvironmental Cues to Guide Tissue Regeneration in Bone Tissue Applications.
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支架结构微环境线索在骨组织应用中指导组织再生

DOI:
10.3390/nano8110960
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发表时间:
2018-11-21
期刊:
Nanomaterials (Basel, Switzerland)
影响因子:
--
通讯作者:
Zhang X
Zhang X
中科院分区:
其他
文献类型:
--
作者:
Chen X;Fan H;Deng X;Wu L;Yi T;Gu L;Zhou C;Fan Y;Zhang X

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在骨再生的过程中,新骨的形成在很大程度上受到周围微环境中的物理化学线索的影响。组织细胞存在于复杂的支架生理微环境中。该支架应提供充满结构线索的特定环境,以促进多潜能间充质干细胞(MSC)的分化、成骨细胞的生长、细胞外基质(ECM)的沉积以及随后的新骨形成。本文综述了制造具有明确孔结构和表面形貌的生物材料的制造技术的进展,这些材料可以被宿主组织细胞(特别是干细胞)感知并随后在分化过程中决定细胞的命运。研究了支架的孔结构(即孔隙率和孔径)、颗粒尺寸和表面形貌三个重要指标。这些发现提高了我们对支架微环境信号如何引导骨组织再生的理解。
In the process of bone regeneration, new bone formation is largely affected by physico-chemical cues in the surrounding microenvironment. Tissue cells reside in a complex scaffold physiological microenvironment. The scaffold should provide certain circumstance full of structural cues to enhance multipotent mesenchymal stem cell (MSC) differentiation, osteoblast growth, extracellular matrix (ECM) deposition, and subsequent new bone formation. This article reviewed advances in fabrication technology that enable the creation of biomaterials with well-defined pore structure and surface topography, which can be sensed by host tissue cells (esp., stem cells) and subsequently determine cell fates during differentiation. Three important cues, including scaffold pore structure (i.e., porosity and pore size), grain size, and surface topography were studied. These findings improve our understanding of how the mechanism scaffold microenvironmental cues guide bone tissue regeneration.
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