探索可注射的脚手架球体用于退化椎间盘中核脉治疗
Rathina Vel Balasubramanian1,2, Marcia Muerner3,4, Oliver Kopinski-Grünwald1,2
13D Printing and Biofabrication Group, Institute of Materials Science and Technology, Technische Universität Wien, Vienna 1040, Austria.
ACS applied materials & interfaces
|February 16, 2026
概括
脚手架球体 (S-SPH) 增强细胞存活和功能,用于脊椎间盘退化 (IVDD) 治疗. 这些可注射的组织块显示出核脉再生的前景.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 组织工程是组织工程.
背景情况:
- 椎间盘退化 (IVDD) 为基于细胞的疗法带来了挑战,原因是剪切压力和细胞存活率差.
- 现有的治疗方法在注射过程中与细胞损伤以及恶劣的磁盘微环境作斗争.
研究的目的:
- 开发可注射支架球体 (S-SPH) 进行增强细胞输送和核脉 (NP) 再生.
- 克服基于细胞的IVDD治疗方法的局限性.
主要方法:
- 人类骨髓衍生中酶干细胞 (hBMSC) 球体被整合到3D打印的微型支架 (MS).
- 使用了优化的细胞播种密度和MS参数.
- 使用GDF5在模拟的体内条件下诱导了NP类差异化 (常毒/低毒,低葡萄糖).
主要成果:
- S-SPH保持了高细胞活力,并产生了丰富的细胞外基质.
- 关键的NP标志物 (ACAN,KRT18,HIF1α) 得到了上调,表明成功的差异化.
- S-SPH表现出更好的压缩性能,保持了结构完整性,并通过26G针的注射幸存下来.
结论:
- 脚手架球体 (S-SPH) 为NP再生提供了一个有希望的体外战略.
- S-SPH显示出IVDD治疗的潜力,需要进一步进行临床前研究.
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