GelMA-MXene hydrogel nerve conduits with microgrooves for spinal cord injury repair.

GelMA-MXene hydrogel nerve conduits with microgrooves for spinal cord injury repair.
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用于脊髓损伤修复的带微槽的GelMA-MXene水凝胶神经导管。

DOI:
10.1186/s12951-022-01669-2
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发表时间:
2022-10-28
影响因子:
10.2
通讯作者:
Chai, Renjie
Chai, Renjie
中科院分区:
工程技术1区
文献类型:
--
作者:
Cai, Jiaying;Zhang, Hui;Hu, Yangnan;Huang, Zhichun;Wang, Yan;Xia, Yu;Chen, Xiaoyan;Guo, Jiamin;Cheng, Hong;Xia, Lin;Lu, Weicheng;Zhang, Chen;Xie, Jingdun;Wang, Huan;Chai, Renjie

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脊髓损伤(SCI)的修复依赖于微环境的改善和损伤轴突与再生神经元的重新连接。在这里,我们制作了一个GelMA-MXene水凝胶神经导管的导电性和面向内的纵向槽,并探讨其在SCI修复的功能。结果表明,所制备的GelMA-MXene沟槽水凝胶能有效促进神经干细胞(NSCs)的体外黏附、定向增殖和分化。此外,当将载有神经干细胞(GMN)的GelMA-MXene导管植入损伤的脊髓部位时,证实了对SCI完全横断的有效修复能力。与其他组相比,GMN组显示出显著的神经恢复和显著更高的BBB评分。因此,具有微槽结构的GMN负载神经干细胞是一种很有前途的治疗脊髓损伤的策略。在线版本包含补充材料,可通过10.1186/s12951-022-01669-2获得。
Repair of spinal cord injury (SCI) depends on microenvironment improvement and the reconnection between injured axons and regenerated neurons. Here, we fabricate a GelMA-MXene hydrogel nerve conduit with electrical conductivity and internal-facing longitudinal grooves and explore its function in SCI repair. It is found that the resultant grooved GelMA-MXene hydrogel could effectively promote the neural stem cells (NSCs) adhesion, directed proliferation and differentiation in vitro. Additionally, when the GelMA-MXene conduit loaded with NSCs (GMN) is implanted into the injured spinal cord site, effective repair capability for the complete transection of SCI was demonstrated. The GMN group shows remarkable nerve recovery and significantly higher BBB scores in comparison to the other groups. Therefore, GMN with the microgroove structure and loaded with NSCs is a promising strategy in treating SCI. The online version contains supplementary material available at 10.1186/s12951-022-01669-2.
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