Department of Materials Engineering, Indian Institute of Science, C. V. Raman Avenue, Bangalore 560012, India.
Department of Bioengineering, Indian Institute of Science, C. V. Raman Avenue, Bangalore 560012, India.
Biomacromolecules. 2024 Sep 9;25(9):5512-5540. doi: 10.1021/acs.biomac.4c00540. Epub 2024 Aug 12.
Current bone repair methods have limitations, prompting the exploration of innovative approaches. Tissue engineering emerges as a promising solution, leveraging biomaterials to craft scaffolds replicating the natural bone environment, facilitating cell growth and differentiation. Among fabrication techniques, three-dimensional (3D) printing stands out for its ability to tailor intricate scaffolds. Silk proteins (SPs), known for their mechanical strength and biocompatibility, are an excellent choice for engineering 3D-printed bone tissue engineering (BTE) scaffolds. This article comprehensively reviews bone biology, 3D printing, and the unique attributes of SPs, specifically detailing criteria for scaffold fabrication such as composition, structure, mechanics, and cellular responses. It examines the structural, mechanical, and biological attributes of SPs, emphasizing their suitability for BTE. Recent studies on diverse 3D printing approaches using SPs-based for BTE are highlighted, alongside advancements in their 3D and four-dimensional (4D) printing and their role in osteo-immunomodulation. Future directions in the use of SPs for 3D printing in BTE are outlined.
目前的骨修复方法存在局限性,这促使人们探索创新方法。组织工程学应运而生,成为一种有前途的解决方案,它利用生物材料来制作支架,复制自然骨环境,促进细胞生长和分化。在制造技术中,三维(3D)打印因其能够定制复杂支架而脱颖而出。丝蛋白(SPs)以其机械强度和生物相容性而闻名,是工程 3D 打印骨组织工程(BTE)支架的绝佳选择。本文全面回顾了骨生物学、3D 打印以及 SPs 的独特属性,特别详细说明了支架制造的标准,如组成、结构、力学和细胞反应。它检查了 SPs 的结构、机械和生物学特性,强调了它们在 BTE 中的适用性。还强调了 SPs 在骨免疫调节中的作用,突出了基于 SPs 的用于 BTE 的不同 3D 打印方法的最新研究进展以及它们在 3D 和 4D 打印方面的进展。概述了 SPs 在 BTE 中 3D 打印的未来发展方向。
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