3D可打印海藻酸钠-基质胶(SA-MA)水凝胶促进外胚间充质干细胞(EMSCs)向神经元分化。

3D printable Sodium alginate-Matrigel (SA-MA) hydrogel facilitated ectomesenchymal stem cells (EMSCs) neuron differentiation.

作者信息

Li Yang, Cao Xia, Deng Wenwen, Yu Qingtong, Sun Congyong, Ma Ping, Shao Fengxia, Yusif Mukhtar Mohammed, Ge Zhumei, Wang Kaili, Li Ran, Yu Jiangnan, Xu Ximing

机构信息

School of Pharmacy, Jiangsu University, Zhenjiang, China.

出版信息

J Biomater Appl. 2021 Jan;35(6):709-719. doi: 10.1177/0885328220961261. Epub 2020 Oct 15.

Abstract

Ectomesenchymal stem cells (EMSCs) are typical adult stem cells obtained from the cranial neural crest. They have the potential to differentiate into various cell types, such as osseous cells, neurons and glial cells. Three-dimensional (3 D) printing is a novel method to construct biological structures by rapid prototyping. Previously, our group reported on the stemness and multi-lineage differentiation potential of EMSCs on gels. However, the exploration of EMSCs in 3 D printing and then evaluation of the growth and neuronal differentiation of EMSCs on extruded 3 D printable hybrid hydrogels has not been reported. Therefore, the current study explored the novel hybrid Sodium alginate-Matrigel (SA-MA) hydrogel extruded 3 D printing to design an scaffold to promote the differentiation and growth of EMSCs. In addition, the physical properties of the hydrogel were characterized and its drug-releasing property determined. Notably, the results showed that the construct exhibited a sustain-released effect of growth factor BDNF in accordance with the Higuchi equation. Moreover, the cell survival rate on the 3 D printed scaffold was 88.22 ± 1.13% with higher neuronal differentiation efficiency compared with 2 D culture. Thus, SA-MA's ability to enhanced EMSCs neuronal differentiation offers a new biomaterial for neurons regeneration in the treatment of spinal cord injury.

摘要

外胚间充质干细胞(EMSCs)是从颅神经嵴获得的典型成体干细胞。它们具有分化为多种细胞类型的潜力,如骨细胞、神经元和神经胶质细胞。三维(3D)打印是一种通过快速成型构建生物结构的新方法。此前,我们小组报道了EMSCs在凝胶上的干性和多向分化潜能。然而,关于EMSCs在3D打印中的探索以及随后对其在挤出式3D可打印混合水凝胶上的生长和神经元分化的评估尚未见报道。因此,本研究探索了新型的海藻酸钠-基质胶(SA-MA)混合水凝胶挤出式3D打印,以设计一种支架来促进EMSCs的分化和生长。此外,还对水凝胶的物理性质进行了表征,并测定了其药物释放特性。值得注意的是,结果表明该构建体呈现出符合Higuchi方程的生长因子脑源性神经营养因子(BDNF)的缓释效果。而且,与二维培养相比,3D打印支架上的细胞存活率为88.22±1.13%,神经元分化效率更高。因此,SA-MA增强EMSCs神经元分化的能力为脊髓损伤治疗中的神经元再生提供了一种新的生物材料。

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索