Zhang Zhifa, Li Molin, Cheng Gang, Wang Peng, Zhou Chunhui, Liu Yang, Duan Xiaofeng, Wang Jing, Xie Fang, Zhu Yaqiong, Zhang Jianning
Departments of Neurosurgery, The First Center of Chinese, PLA General Hospital, Beijing, China.
Departments of Ultrasound, Tianjin Medical University Cancer Institute & Hospital, Tianjin, China.
Stem Cell Res Ther. 2024 Dec 31;15(1):503. doi: 10.1186/s13287-024-04093-5.
BACKGROUND: Treatment of peripheral nerve defects is a major concern in regenerative medicine. This study therefore aimed to explore the efficacy of a neural graft constructed using adipose mesenchymal stem cells (ADSC), acellular microtissues (MTs), and chitosan in the treatment of peripheral nerve defects. METHODS: Stem cell therapy with acellular MTs provided a suitable microenvironment for axonal regeneration, and compensated for the lack of repair cells in the neural ducts of male 8-week-old Sprague Dawley rats. RESULTS: In vitro, acellular MTs retained the intrinsic extracellular matrix and improved the narrow microstructure of acellular nerves, thereby enhancing cell functionality. In vivo neuroelectrophysiological studies, gait analysis, and sciatic nerve histology demonstrated the regenerative effects of active acellular MT. The Chitosan + Acellular-MT + ADSC group exhibited superior myelin sheath quality and improved neurological and motor function recovery. CONCLUSIONS: Active acellular-MTs precellularized with ADSC hold promise as a safe and effective clinical treatment method for peripheral nerve defects.
背景:周围神经缺损的治疗是再生医学中的一个主要关注点。因此,本研究旨在探讨使用脂肪间充质干细胞(ADSC)、脱细胞微组织(MTs)和壳聚糖构建的神经移植物在治疗周围神经缺损中的疗效。 方法:脱细胞MTs的干细胞疗法为轴突再生提供了合适的微环境,并弥补了8周龄雄性Sprague Dawley大鼠神经导管中修复细胞的不足。 结果:在体外,脱细胞MTs保留了内在的细胞外基质并改善了脱细胞神经的狭窄微观结构,从而增强了细胞功能。体内神经电生理研究、步态分析和坐骨神经组织学证明了活性脱细胞MT的再生作用。壳聚糖+脱细胞-MT+ADSC组表现出 superior 髓鞘质量,并改善了神经和运动功能恢复。 结论:用ADSC预细胞化的活性脱细胞-MTs有望成为一种安全有效的周围神经缺损临床治疗方法。
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