中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (19): 2969-2975.doi: 10.3969/j.issn.2095-4344.3526

• 脂肪干细胞 adipose-derived stem cells • 上一篇    下一篇

人脂肪间充质干细胞无支架三维凝胶修复猪膝关节损伤

张剑慧1,马贺然1,谭  毅1,王芝辉1,2    

  1. 1山东省齐鲁细胞治疗工程技术有限公司 ,山东省济南市  250000;2山东第一医科大学科创中心,山东省济南市  250000
  • 收稿日期:2020-04-23 修回日期:2020-04-29 接受日期:2020-06-29 出版日期:2021-07-09 发布日期:2021-01-13
  • 通讯作者: 王芝辉,博士,正高级工程师,山东省齐鲁细胞治疗工程技术有限公司,山东省济南市 250000;山东第一医科大学科创中心,山东省济南市 250000
  • 作者简介:张剑慧,1987年生,2014年北京师范大学毕业,硕士,主要从事干细胞研究。
  • 基金资助:
    山东省泰山产业领军人才项目(鲁政办字[2017]199号),项目负责人:王芝辉

Knee injury repair using human adipose-derived mesenchymal stem cells-based scaffold-free three-dimensional gel-like construct in pigs

Zhang Jianhui1, Ma Heran1, Tan Yi1, Wang Zhihui1, 2    

  1. 1Qilu Cell Therapy Technology Co., Ltd., Jinan 250000, Shandong Province, China; 2University Creative Research Initiatives Center of Shandong First Medical University, Jinan 250000, Shandong Province, China
  • Received:2020-04-23 Revised:2020-04-29 Accepted:2020-06-29 Online:2021-07-09 Published:2021-01-13
  • Contact: Wang Zhihui, PhD, Senior engineering, Qilu Cell Therapy Technology Co., Ltd., Jinan 250000, Shandong, China; University Creative Research Initiatives Center of Shandong First Medical University, Jinan 250000, Shandong Province, China
  • About author:Zhang Jianhui, Master, Qilu Cell Therapy Technology Co., Ltd., Jinan 250000, Shandong Province, China
  • Supported by:
    Shandong Taishan Industry Leading Talent Project, No. [2017]199 (to WZH)

摘要:

文题释义:
脂肪间充质干细胞无支架三维凝胶:脂肪间充质干细胞大密度接种于培养皿中,添加含有抗坏血酸-2-磷酸酯的MSCBM培养基,干细胞会分泌大量胶原使细胞胶联成一体,形成细胞膜片状结构,只需要轻微剪切力可将细胞膜片从培养皿底部吹起。在不需要外源支架的条件下形成含有干细胞成分的凝胶状结构。
干细胞凝胶移植治疗猪软骨损伤:猪的膝关节在解剖学上与人有很多相似之处,猪的膝软骨厚度足够允许进行关节软骨损伤造模,而不伤及软骨下骨组织。造模之后立即进行干细胞凝胶植入,凝胶自动黏附在关节软骨上,从而实现了无缝合移植。

背景:与传统的治疗方法相比,间充质干细胞可以从根本上修复受损的软骨组织,在软骨损伤修复中显现出优势。目前尚无关于脂肪间充质干细胞来源无支架三维凝胶对于软骨修复能力的相关研究报道。
目的:探究人脂肪间充质干细胞无支架三维凝胶治疗猪软骨损伤的可行性。
方法:取第3-5代人脂肪间充质干细胞,以4×105/cm2的密度接种于培养皿中,添加含5%血清替代物UltroGRO、0.2 mmol/L 抗坏血酸-2-磷酸酯的MSCBM培养基静置培养14 d,轻轻吹起细胞及细胞基质即为脂肪间充质干细胞三维凝胶,然后分别进行成骨、成脂、成软骨诱导鉴定凝胶中脂肪间充质干细胞的干性。取10只4月龄雌性巴马小型猪,在猪双膝股骨内侧髁的软骨上各制造一处直径5 mm,深2 mm的软骨损伤,右侧膝关节软骨损伤处移植脂肪干细胞凝胶,使凝胶完全填充满缺损处,作为治疗组;左侧不治疗,作为自身对照组。治疗后4,6,8个月取出软骨及骨组织,进行苏木精-伊红染色、番红固绿染色。
结果与结论:人脂肪间充干细胞无支架三维凝胶仍具备间充质干细胞的干性,具有分化成脂、成骨、成软骨的能力。软骨组织切片染色可见对照组损伤明显,细胞凝胶治疗组损伤底层可见成群分布的成熟软骨细胞,向上逐渐过渡为幼稚的软骨细胞,表浅部位仍可见残存的肉芽组织,经过6-8个月治疗,有效率为62.5%(5/8)。结果显示脂肪间充质干细胞三维凝胶能促进猪膝关节软骨损伤修复。 

关键词: 干细胞, 脂肪间充质干细胞, 干细胞凝胶, 移植, 膝, 软骨损伤, 巴马小型猪

Abstract: BACKGROUND: Compared with the traditional treatment methods, mesenchymal stem cells can fundamentally repair the damaged cartilage tissue, showing advantages in the repair of chondral defect. At present, there is no relevant research report on the ability of adipose-derived mesenchymal stem cells (ADMSCs)-based scaffold-free three-dimensional gel-like construct (ADMSCs-3D-GC) repairing chondral defect.
OBJECTIVE: To explore the feasibility of treating porcine chondral defect with ADMSCs-3D-GC.
METHODS:  Passage 3-5 of ADMSCs were cultured in the petri dish at a concentration of 4×105/cm2, with the MSCBM medium containing 5% serum substitute UltroGRO and 0.2 mmol/L ascorbic acid-2-phosphate. After stationary culture for 14 days, gently blow up the cells and cell matrix to form a three-dimensional adipose-derived mesenchymal stem cell gel. Osteogenesis, lipogenesis, and chondrogenesis were performed to identify the dryness of adipose mesenchymal stem cells in the gel. A cartilage lesion of 5 mm in diameter and 2 mm in depth was observed on the cartilage of the medial condyle of the femur in each knee of ten 4-month-old female Bama miniature pigs. The ADMSCs-3D-GC transplantation was performed at the damaged site of cartilage of the right knee joint to completely fill the defect and serve as the treatment group. The left side was not treated and served as the control group. After treatment for 4, 6 and 8 months, the cartilage and bone tissues were sampled and stained with hematoxyline and eosin, and Safranine O-Fast Green staining.
RESULTS AND CONCLUSION: The ADMSCs-3D-GC had dryness of mesenchymal stem cells, and could promote osteogenesis, lipogenesis and chondrogenesis. Cartilage tissue staining showed that the control group was significantly damaged. In the cell gel treatment group, a group of mature chondrocytes could be seen at the bottom of injury, and gradually transformed into immature chondrocytes, and residual granulation tissues were still visible at the superficial level. The effective rate was 62.5% (5/8) after 6-8 months of treatment. The results showed that ADMSCs-3D-GC could promote the repair of cartilage damage in pig knee joints.

Key words: stem cells, adipose-derived mesenchymal stem cells, adipose-derived mesenchymal stem cells-based scaffold-free three-dimensional gel-like construct, transplantation, knee, cartilage injury, Bama miniature pig

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