Effects of Silk Fibroin Hydrogel Degradation on the Proliferation and Chondrogenesis of Encapsulated Stem Cells

IF 5.4 2区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Biomacromolecules Pub Date : 2025-02-10 Epub Date: 2025-01-22 DOI:10.1021/acs.biomac.4c01676

Tianhao Zhu, Guolong Cai, Weikun Zhao, Xiang Yao, Yaopeng Zhang

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Abstract

Silk fibroin (SF) hydrogels are widely used in three-dimensional (3D) cell culture and tissue repair. Despite their importance, few studies have focused on regulating their degradation and further revealing the effects of the degradation process on encapsulated cell behaviors. Herein, SF hydrogels with equivalent initial properties and different degradation rates were prepared by adjusting the ratios between the hydrogel-encapsulated normal SF microspheres (MS_N) and enzyme-loaded SF microspheres (MS_E). Further, cell experiments revealed that moderately accelerating the hydrogel degradation obviously improved the proliferation of MSCs during 7 days of culture. Slightly accelerating the hydrogel degradation promoted MSC chondrogenesis. However, too rapid of a hydrogel degradation was unfavorable for these cell behaviors. The relevant studies are expected to provide useful strategies for regulating SF hydrogel degradation and also afford new references for the development of excellent SF hydrogels and other protein-based biomaterials for cartilage regeneration.

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丝素蛋白水凝胶降解对包膜干细胞增殖和软骨形成的影响。

丝素蛋白水凝胶在三维细胞培养和组织修复中有着广泛的应用。尽管它们很重要，但很少有研究关注它们的降解调控，并进一步揭示降解过程对被包被细胞行为的影响。通过调整水凝胶包封的正常SF微球（MSN）和载酶的SF微球（MSE）的比例，制备了初始性能相同、降解速率不同的SF水凝胶。此外，细胞实验显示，适度加速水凝胶降解可明显促进MSCs在培养7天内的增殖。略微加速水凝胶降解可促进MSC软骨形成。然而，过快的水凝胶降解不利于这些细胞的行为。相关研究有望为SF水凝胶的降解调控提供有用的策略，并为开发优质的SF水凝胶和其他用于软骨再生的蛋白基生物材料提供新的参考。

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来源期刊

Biomacromolecules 化学-高分子科学

CiteScore

10.60

自引率

4.80%

发文量

417

审稿时长

1.6 months

期刊介绍： Biomacromolecules is a leading forum for the dissemination of cutting-edge research at the interface of polymer science and biology. Submissions to Biomacromolecules should contain strong elements of innovation in terms of macromolecular design, synthesis and characterization, or in the application of polymer materials to biology and medicine. Topics covered by Biomacromolecules include, but are not exclusively limited to: sustainable polymers, polymers based on natural and renewable resources, degradable polymers, polymer conjugates, polymeric drugs, polymers in biocatalysis, biomacromolecular assembly, biomimetic polymers, polymer-biomineral hybrids, biomimetic-polymer processing, polymer recycling, bioactive polymer surfaces, original polymer design for biomedical applications such as immunotherapy, drug delivery, gene delivery, antimicrobial applications, diagnostic imaging and biosensing, polymers in tissue engineering and regenerative medicine, polymeric scaffolds and hydrogels for cell culture and delivery.