软骨细胞外基质作为软骨再生的生物材料。

Cartilage extracellular matrix as a biomaterial for cartilage regeneration.

机构信息

Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, Oklahoma.

Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, Colorado.

出版信息

Ann N Y Acad Sci. 2016 Nov;1383(1):139-159. doi: 10.1111/nyas.13278.

Abstract

The extracellular matrix (ECM) of various tissues possesses the model characteristics that biomaterials for tissue engineering strive to mimic; however, owing to the intricate hierarchical nature of the ECM, it has yet to be fully characterized and synthetically fabricated. Cartilage repair remains a challenge because the intrinsic properties that enable its durability and long-lasting function also impede regeneration. In the last decade, cartilage ECM has emerged as a promising biomaterial for regenerating cartilage, partly because of its potentially chondroinductive nature. As this research area of cartilage matrix-based biomaterials emerged, investigators facing similar challenges consequently developed convergent solutions in constructing robust and bioactive scaffolds. This review discusses the challenges, emerging trends, and future directions of cartilage ECM scaffolds, including a comparison between two different forms of cartilage matrix: decellularized cartilage (DCC) and devitalized cartilage (DVC). To overcome the low permeability of cartilage matrix, physical fragmentation greatly enhances decellularization, although the process itself may reduce the chondroinductivity of fabricated scaffolds. The less complex processing of a scaffold composed of DVC, which has not been decellularized, appears to have translational advantages and potential chondroinductive and mechanical advantages over DCC, without detrimental immunogenicity, to ultimately enhance cartilage repair in a clinically relevant way.

摘要

各种组织的细胞外基质 (ECM) 具有组织工程生物材料努力模拟的模型特征;然而,由于 ECM 的复杂层次结构,它尚未被充分表征和合成制造。软骨修复仍然是一个挑战,因为使其具有耐用性和持久功能的内在特性也阻碍了再生。在过去的十年中,软骨 ECM 已成为一种有前途的软骨再生生物材料,部分原因是其具有潜在的软骨诱导特性。随着基于软骨基质的生物材料这一研究领域的出现,面临类似挑战的研究人员因此在构建坚固和有生物活性的支架方面开发了趋同的解决方案。本综述讨论了软骨 ECM 支架的挑战、新兴趋势和未来方向,包括两种不同形式的软骨基质(去细胞软骨 (DCC) 和失活软骨 (DVC))之间的比较。为了克服软骨基质的低渗透性,物理碎片化极大地增强了去细胞化,尽管该过程本身可能会降低所制造支架的软骨诱导性。由未去细胞化的 DVC 组成的支架的处理过程不太复杂,似乎具有转化优势,并且相对于 DCC 具有潜在的软骨诱导性和机械优势,而没有有害的免疫原性,最终以更具临床相关性的方式增强软骨修复。

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