皮肤纤维细胞衍生的外体促进骨接口治疗慢性旋转手套撕裂在子模型的肌接口
Jian Han1, Guan-Cong Li1, Shen-Yun Fang1
1Department of Orthopaedic Surgery, The First People's Hospital of Huzhou, First Affiliated Hospital of Huzhou University, Huzhou, Zhejiang, China.
概括
来自皮肤纤维细胞 (DF-Ex) 的外体显著增强了慢性旋转手套撕裂中的骨接口愈合. 这种生物制剂改善了结构和生物力学特性,显示了人类应用的希望.
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.
- 整形外科手术 整形外科手术
背景情况:
- 慢性旋转手套撕裂 (RCT) 是一个重大的临床挑战,通常导致骨接口 (BTI) 的愈合不良.
- 目前的治疗方法在促进有效的BTI再生和恢复生物机械功能方面存在局限性.
- 外体细胞,特别是来自皮肤纤维细胞 (DF-Ex) 的外体细胞,正在成为强大的组织修复治疗剂.
研究的目的:
- 评估DF-Ex在慢性RCT子模型中促进BTI愈合的疗效.
- 评估DF-Ex对关键矩阵蛋白的表达以及修复的BTI的组织学和生物力学特性的影响.
主要方法:
- 在体外提取并表征了DF-Ex.
- 在48只子中建立了慢性RCT模型,并随机分配到三个组:盐水对照组,仅使用纤维素,以及使用纤维素的DF-Ex.
- 分析包括基因表达 (COL1A1,COL3A1,ACAN),免疫光,组织学和修复后4周和12周的生物机械测试.
主要成果:
- 在体外鉴定证实了DF-Ex.中存在外体标记物 (CD9,CD63,ALIX) 的存在.
- 在手术后4周,DF-Ex治疗显著提高了COL1A1,COL3A1和ACAN mRNA的表达.
- 在12周,DF-Ex增强了原纤维组织,成熟的BTI形成,并显著增加了负载到故障值 (53.3 ± 6.1 N/kg).
结论:
- 在慢性RCT模型中,局部的DF-Ex管理有效地促进了BTI愈合.
- DF-Ex可以提高关键矩阵基因表达的调节,并改善修复的肌的结构和生物力学特性.
- 在人类中,DF-Ex代表了一种有前途的生物药物,用于手术修复慢性旋转部撕裂.
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