在现场生物打印来自胚胎的干细胞来修复人类的活体体质缺陷
Shawn P Grogan1, Erik W Dorthé1, Nicholas E Glembotski1
1Scripps Health, Shiley Center for Orthopaedic Research and Education at Scripps Clinic, San Diego, California, USA.
Tissue engineering. Part A
|May 5, 2025
概括
这项研究展示了3D生物打印,使用胚胎衍生的介质干细胞 (ES-MSC) 和纤维素生物墨水用于软骨修复. 该技术在人类骨关节炎组织中成功生成了新软骨组织,证明了治疗软骨缺陷的潜力.
科学领域:
- 再生医学是一种再生医学.
- 生物技术是生物技术.
- 组织工程是组织工程.
背景情况:
- 软骨缺陷,特别是骨关节炎 (OA) 关节的缺陷,带来了重大的临床挑战.
- 目前用于软骨再生的治疗方法有限,需要创新的方法.
- 在现场生物打印为缺陷中的直接组织修复提供了一个有希望的策略.
研究的目的:
- 评估现场生物打印用于再生软骨病变的可行性.
- 评估胚胎衍生的介质干细胞 (ES-MSC) 与基于纤维素的生物墨水的组合,以形成新软骨.
- 利用一个集成的生物打印平台,精确地传送到人类OA组织中的状缺陷中.
主要方法:
- 采用了带有激光扫描的6轴生物打印系统来绘制和填补色底缺陷.
- 用纳米纤维素和/或氨酸修饰的纤维素基生物墨水中封装的ES-MSC.
- 生物打印构造体外和体外,随后进行交叉链接和8周的冠原体培养.
主要成果:
- 将纳米纤维素纳入纤维素生物油墨显著提高了打印效率.
- 生物打印ES-MSC产生了类似于软骨的新组织,由Safranin O和II型原色染证实.
- 在8周的时间里,构造物显示出高调的原基因表达和增强的机械性质 (高达~150kPa).
结论:
- 证明了在人体OA组织中用于新软骨生成的现场生物打印的可行性.
- 验证了ES-MSC在可打印纤维素基水凝中用于软骨修复的使用.
- 综合生物打印方法显示出有效治疗德拉缺陷的潜力.
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