中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (7): 1356-1362.doi: 10.12307/2025.019

• 脐带脐血干细胞 umbilical cord blood stem cells • 上一篇    下一篇

明胶三维微球装载人脐带间充质干细胞修复慢性肌腱病

李帝均1,酒精卫1,刘海峰1,闫  磊1,李松岩2,王  斌1,2   

  1. 1山西医科大学第二医院骨科,山西省太原市   030000;2浙江大学医学院附属第一医院骨科,浙江省杭州市   310006
  • 收稿日期:2023-11-16 接受日期:2024-02-06 出版日期:2025-03-08 发布日期:2024-06-27
  • 通讯作者: 王斌,博士,副主任医师,山西医科大学第二医院骨科,山西省太原市 030000;浙江大学医学院附属第一医院骨科,浙江省杭州市 310006
  • 作者简介:李帝均,男,1994年生,湖北省宣恩县人,山西医科大学在读硕士,主要从事组织工程、再生医学对肌腱损伤修复的研究。
  • 基金资助:
    国家自然科学基金(81802204),项目负责人:王斌;浙江省自然科学基金(LTGY23H060007),项目负责人:王斌

Three-dimensional gelatin microspheres loaded human umbilical cord mesenchymal stem cells for chronic tendinopathy repair

Li Dijun1, Jiu Jingwei1, Liu Haifeng1, Yan Lei1, Li Songyan2, Wang Bin1, 2   

  1. 1Department of Orthopedics, Second Hospital of Shanxi Medical University, Taiyuan 030000, Shanxi Province, China; 2Department of Orthopedics, First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310006, Zhejiang Province, China
  • Received:2023-11-16 Accepted:2024-02-06 Online:2025-03-08 Published:2024-06-27
  • Contact: Wang Bin, MD, Associate chief physician, Department of Orthopedics, Second Hospital of Shanxi Medical University, Taiyuan 030000, Shanxi Province, China; Department of Orthopedics, First Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310006, Zhejiang Province, China
  • About author:Li Dijun, Master candidate, Department of Orthopedics, Second Hospital of Shanxi Medical University, Taiyuan 030000, Shanxi Province, China
  • Supported by:
    National Natural Science Foundation of China, No. 81802204 (to WB); Natural Science Foundation of Zhejiang Province, No. LTGY23H060007 (to WB)

摘要:

文题释义:

明胶微载体:由数万颗弹性三维多孔微载体组成,孔隙率> 90%,粒径大小可控于50-500 μm区间,均一度≤100 μm,可用于贴壁细胞的培养并实现细胞、病毒、细胞产物的收获,具有良好可降解性与生物相容性。
人脐带间充质干细胞:从胎儿脐带组织中分离培养获得的一种间充质干细胞,具有良好的增殖分化与免疫调节能力。
组织工程化干细胞:利用组织工程技术制备明胶三维微载体,将人脐带间充质干细胞接种于明胶微载体进行细胞培养。明胶微载体三维细胞培养可以增加细胞间的信息交流以及细胞间连接,同时可改变干细胞的分化状态,实现三维仿生培养。


背景:肌腱组织因缺少血管而修复困难,如何促进肌腱的恢复和提高肌腱损伤后干细胞治疗的效果,一直是临床及科研的研究热点和重点。
目的:将人脐带间充质干细胞与明胶微载体支架结合构建组织工程化干细胞,通过体外实验与大鼠体内实验观察明胶微载体培养的人脐带间充质干细胞对肌腱病的治疗效果及作用机制。
方法:①体外细胞实验:将人脐带间充质干细胞接种于三维明胶微载体后观察细胞活性以及存活情况,以常规培养的人脐带间充质干细胞作为对照;②动物体内实验:将成年SD大鼠随机分为正常组、肌腱病组、2D组(肌腱病+常规培养人脐带间充质干细胞)、3D组(肌腱病+明胶微载体三维培养的人脐带间充质干细胞),每组6只,治疗4周后进行动物行为学检测以及跟腱病理组织形态观察。
结果与结论:①体外细胞实验:接种于明胶微载体的人脐带间充质干细胞存活率高,且随着时间延长细胞增殖速率增加;与对照组相比,三维明胶微载体培养的细胞活性更好;②动物体内实验:治疗4周后,与肌腱病组比较,3D组大鼠下肢功能恢复良好及组织病理学评分显著改善,而2D组也可一定程度改善肌腱病损伤,但效果不及3D组;③结果表明,三维明胶微载体培养的人脐带间充质干细胞可以促进肌腱损伤组织修复再生,且修复效果优于常规培养人脐带间充质干细胞。

https://orcid.org/0009-0002-9484-9592 (李帝均);https://orcid.org/0000-0002-5474-1002 (王斌) 


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 肌腱病, 肌腱损伤, 人脐带间充质干细胞, 组织工程化干细胞, 微载体, 三维培养

Abstract: BACKGROUND: The absence of blood vessels in tendon tissue makes tendon repair challenging. Therefore, improving tendon healing and raising the efficacy of stem cell and other therapeutic cell transplantation after tendon damage have become hotspots for research in both clinical and scientific contexts.
OBJECTIVE: The stem cells and gelatin microcarrier scaffold were joined to form tissue engineered stem cells. Human umbilical cord mesenchymal stem cells cultured in gelatin microcarriers were used to investigate the therapeutic impact and mode of action on tendinopathy healing in rats in vitro and In vivo. 
METHODS: (1) In vitro cell experiments: After seeding human umbilical cord mesenchymal stem cells with three-dimensional gelatin microcarriers, the cell vitality and survival were assessed. Human umbilical cord mesenchymal stem cells conventionally cultured were cultured as controls. (2) In vivo experiment: Adult SD rats were randomly assigned to normal group, tendinopathy group, 2D group (tendinopathy + conventional culture of human umbilical cord mesenchymal stem cells), and 3D group (tendinopathy + gelatin microcarrier three-dimensional culture of human umbilical cord mesenchymal stem cells), with 6 rats in each group. Four weeks after therapy, animal behavior tests and histopathologic morphology of the Achilles tendon was examined.
RESULTS AND CONCLUSION: (1) In vitro cell experiments: the seeded human umbilical cord mesenchymal stem cells on gelatin microcarriers showed high viability and as time went on, the stem cell proliferation level grew. Compared with the control group, 3D stem cell culture preserved cell viability. (2) In vivo experiment: Following a 4-week treatment, the 3D stem cell culture group showed a significant improvement in both functional recovery of the lower limbs and histopathological scores when compared to the tendinopathy group. The 2D stem cell culture group also showed improvement in tendinopathy injury, but its effect is not as much as the 3D stem cell culture group. (3) The outcomes demonstrate that human umbilical cord mesenchymal stem cells cultured with three-dimensional gelatin microcarrier can promote the repair and regeneration of tendon injury tissue, and the repair effect is better than that of conventional human umbilical cord mesenchymal stem cells.

Key words: tendinopathy, tendon injury, human umbilical cord mesenchymal stem cell, tissue-engineered stem cell, microcarrier, three-dimensional culture 

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