Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.
Department of Orthopedic Surgery, Columbia University, New York, NY, 10032, USA.
Adv Healthc Mater. 2024 Nov;13(29):e2400668. doi: 10.1002/adhm.202400668. Epub 2024 Aug 12.
This review highlights the promise of fiber-reinforced hydrogel composites (FRHCs) for augmenting tendon and ligament repair and regeneration. Composed of reinforcing fibers embedded in a hydrogel, these scaffolds provide both mechanical strength and a conducive microenvironment for biological processes required for connective tissue regeneration. Typical properties of FRHCs are discussed, highlighting their ability to simultaneously fulfill essential mechanical and biological design criteria for a regenerative scaffold. Furthermore, features of FRHCs are described that improve specific biological aspects of tendon healing including mesenchymal progenitor cell recruitment, early polarization to a pro-regenerative immune response, tenogenic differentiation of recruited progenitor cells, and subsequent production of a mature, aligned collagenous matrix. Finally, the review offers a perspective on clinical translation of tendon FRHCs and outlines key directions for future work.
本文综述了纤维增强水凝胶复合材料(FRHCs)在增强肌腱和韧带修复和再生方面的应用前景。这种支架由嵌入水凝胶中的增强纤维组成,为连接组织再生所需的生物过程提供了机械强度和有利的微环境。讨论了 FRHCs 的典型特性,强调了它们同时满足再生支架必需的机械和生物学设计标准的能力。此外,还描述了 FRHCs 的一些特性,这些特性改善了肌腱愈合的特定生物学方面,包括间充质祖细胞的募集、早期向有利于再生的免疫反应极化、募集祖细胞的肌腱分化,以及随后成熟、排列整齐的胶原基质的产生。最后,本文对肌腱 FRHCs 的临床转化进行了展望,并概述了未来工作的重点方向。
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