Boosting cartilage repair with silk fibroin-DNA hydrogel-based cartilage organoid precursor

Boosting cartilage repair with silk fibroin-DNA hydrogel-based cartilage organoid precursor

2024 | Congyi Shen, Jian Wang, Guangfeng Li, Shuyue Hao, Yan Wu, Peiran Song, Yafei Han, Mengmeng Li, Guangchao Wang, Ke Xu, Hao Zhang, Xiaoxiang Ren, Yingying Jing, Ru Yang, Zhen Geng, Jiacan Su
This study explores the use of silk fibroin-DNA (SF-DNA) hydrogel microspheres (RSD-MSs) for cartilage organoid precursor (COP) construction and cartilage repair. RSD-MSs, developed through a microfluidic system integrating photopolymerization and self-assembly techniques, were modified with Pep-RGDFA to enhance cell adhesion and chondrogenic differentiation. In vitro studies demonstrated that RSD-MSs promoted bone marrow mesenchymal stem cell (BMSC) proliferation, adhesion, and chondrogenic differentiation. Transcriptomic analysis revealed that RSD-MSs induced chondrogenesis through integrin-mediated adhesion pathways and glycosaminoglycan (GAG) biosynthesis. In vivo experiments showed that COPs created using RSD-MSs significantly enhanced cartilage regeneration in a rat model. The study concludes that RSD-MSs are an ideal candidate for constructing and long-term culturing of cartilage organoids, offering a novel strategy and material for cartilage regeneration and tissue engineering.This study explores the use of silk fibroin-DNA (SF-DNA) hydrogel microspheres (RSD-MSs) for cartilage organoid precursor (COP) construction and cartilage repair. RSD-MSs, developed through a microfluidic system integrating photopolymerization and self-assembly techniques, were modified with Pep-RGDFA to enhance cell adhesion and chondrogenic differentiation. In vitro studies demonstrated that RSD-MSs promoted bone marrow mesenchymal stem cell (BMSC) proliferation, adhesion, and chondrogenic differentiation. Transcriptomic analysis revealed that RSD-MSs induced chondrogenesis through integrin-mediated adhesion pathways and glycosaminoglycan (GAG) biosynthesis. In vivo experiments showed that COPs created using RSD-MSs significantly enhanced cartilage regeneration in a rat model. The study concludes that RSD-MSs are an ideal candidate for constructing and long-term culturing of cartilage organoids, offering a novel strategy and material for cartilage regeneration and tissue engineering.
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[slides and audio] Boosting cartilage repair with silk fibroin-DNA hydrogel-based cartilage organoid precursor