中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (30): 4834-4839.doi: 10.12307/2022.763

• 干细胞因子及调控因子 stem cell factors and regulatory factors • 上一篇    下一篇

转化生长因子β3介导不同来源的间充质干细胞成软骨分化

李瑞语,史  旭,陈  奇,左  华,李克振   

  1. 江苏大学附属医院,江苏省镇江市   212000
  • 收稿日期:2021-08-30 接受日期:2021-10-15 出版日期:2022-10-28 发布日期:2022-03-29
  • 通讯作者: 陈奇,博士,副主任医师,江苏大学附属医院,江苏省镇江市 212000
  • 作者简介:李瑞语,男,1993年生,安徽省合肥市人,汉族,江苏大学在读硕士,主要从事干细胞相关研究。
  • 基金资助:
    镇江市社会发展指导性科技计划项目资助(FZ2020077),项目负责人:左华;江苏大学大学生创新创业训练计划项目(3171401055),项目负责人:陈奇

Transforming growth factor beta 3 in mediating chondrogenic differentiation of mesenchymal stem cells from different sources

Li Ruiyu, Shi Xu, Chen Qi, Zuo Hua, Li Kezhen   

  1. Affiliated Hospital of Jiangsu University, Zhenjiang 212000, Jiangsu Province, China
  • Received:2021-08-30 Accepted:2021-10-15 Online:2022-10-28 Published:2022-03-29
  • Contact: Chen Qi, MD, Associate chief physician, Affiliated Hospital of Jiangsu University, Zhenjiang 212000, Jiangsu Province, China
  • About author:Li Ruiyu, Master candidate, Affiliated Hospital of Jiangsu University, Zhenjiang 212000, Jiangsu Province, China
  • Supported by:
    Social Development Guiding Science and Technology Project of Zhenjiang City, No. FZ2020077 (to ZH); Student Innovation and Entrepreneurship Training Program of Jiangsu University, No. 3171401055 (to CQ)

摘要:

文题释义:
转化生长因子β3:是转化生长因子β超家族成员之一,可调节细胞增殖、分化和细胞外基质代谢,在软骨细胞的合成和代谢中发挥重要作用,也能促进间充质干细胞在软骨诱导过程中向软骨细胞分化。
鼻黏膜间充质干细胞:是一种来源于胚胎时期神经嵴的成体干细胞,主要存在于鼻腔黏膜中,正常情况下大多处于休眠状态,当受到外因诱导后可表现出不同程度的再生和更新能力,具有分化为骨、软骨、结缔组织和神经细胞的强大潜能。

背景:目前骨髓间充质干细胞已在软骨损伤治疗中取得了显著成效,但与其相比,鼻黏膜间充质干细胞移植具有更多优势,例如取材方便患者更易接受、可安全活检不损伤嗅觉。
目的:探索骨髓间充质干细胞和鼻黏膜间充质干细胞在转化生长因子β3作用下的成软骨诱导效果差异。
方法:体外分离培养SD大鼠鼻黏膜间充质干细胞和骨髓间充质干细胞,用含有转化生长因子β3的成软骨诱导分化培养基分别进行成软骨诱导,相应的对照组用不含有转化生长因子β3的成软骨诱导分化培养基培养。在第7,14天行整体结构观察,并提取细胞RNA与蛋白,采用RT-PCR和Western blot检测软骨细胞相关COL2A1、SOX-9、Aggrecan的表达。
结果与结论:①经过7 d成软骨诱导后骨髓间充质干细胞和鼻黏膜间充质干细胞均能形成半透明膜片结构,离心后成团吹打难以分散;②与对照组相比,加入转化生长因子β3成软骨诱导分化后COL2A1、Aggrecan mRNA表达均显著上调(P < 0.01),其中鼻黏膜间充质干细胞组的COL2A1、Aggrecan mRNA表达高于骨髓间充质干细胞组(P < 0.01);干预7 d,骨髓间充质干细胞实验组中SOX-9 mRNA表达与其对照组无明显差异(P > 0.05),而在鼻黏膜间充质干细胞实验组中SOX-9 mRNA表达较其对照组显著增高(P < 0.01);③与对照组相比,加入转化生长因子β3成软骨诱导分化后COL2A1、SOX-9蛋白表达均显著上调(P < 0.01);干预14 d,骨髓间充质干细胞实验组的COL2A1蛋白表达高于鼻黏膜间充质干细胞实验组,差异有显著性意义(P < 0.01);干预7,14 d,鼻黏膜间充质干细胞实验组的SOX-9蛋白表达高于骨髓间充质干细胞实验组,差异有显著性意义(P < 0.01);④结果表明,转化生长因子β3对鼻黏膜间充质干细胞和骨髓间充质干细胞均有成软骨的刺激作用,鼻黏膜间充质干细胞也是未来软骨修复策略的潜在候选者。

https://orcid.org/0000-0003-2518-147X (李瑞语) 

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: 鼻黏膜间充质干细胞, 骨髓间充质干细胞, 转化生长因子β3, 软骨损伤, 成软骨分化

Abstract: BACKGROUND: At present, bone marrow mesenchymal stem cells have achieved remarkable results in the treatment of cartilage injury. However, compared with them, nasal mucosal mesenchymal stem cell transplantation has more advantages, such as easier access to patients, safe biopsy without damaging the sense of smell.  
OBJECTIVE: To explore the effect of transforming growth factor-β3 on chondrogenic differentiation of nasal mucosal mesenchymal stem cells and bone marrow mesenchymal stem cells.
METHODS:  Sprague-Dawley rat nasal mucosal mesenchymal stem cells and bone marrow mesenchymal stem cells were isolated and cultured in vitro. Chondrogenic differentiation medium containing transforming growth factor β3 was used to induce chondrogenesis. In the corresponding control group, chondrogenic differentiation medium without transforming growth factor β3 was utilized for culture. On days 7 and 14, the overall structure was observed and cellular RNA and protein were extracted. RT-PCR and western blot assay were used to detect the expression of chondrocyte-related COL2A1, SOX-9, and Aggrecan.  
RESULTS AND CONCLUSION: (1) After 7 days of cartilage induction, both bone marrow mesenchymal stem cells and nasal mucosal mesenchymal stem cells could form a translucent membrane structure, which is difficult to disperse after centrifugation. (2) Compared with the control group, the expression levels of COL2A1 and Aggrecan mRNA were significantly up-regulated after the addition of transforming growth factor β3 into cartilage induced differentiation (P < 0.01). The expression levels of COL2A1 and Aggrecan mRNA in the nasal mucosal mesenchymal stem cell group were higher than those in the bone marrow mesenchymal stem cell group (P < 0.01). After 7 days of intervention, the expression of SOX-9 mRNA of bone marrow mesenchymal stem cells in the experimental group was not significantly different from that in the control group (P > 0.05), but the expression of SOX-9 mRNA of nasal mesenchymal stem cells was significantly higher in the experimental group than that in the control group (P < 0.01). (3) Compared with the control group, the expression levels of COL2A1 and SOX-9 protein were significantly up-regulated after the addition of transforming growth factor β3 into cartilage induced differentiation (P < 0.01). COL2A1 protein expression was higher in the bone marrow mesenchymal stem cell group than that in the nasal mucosal mesenchymal stem cell group on day 14 (P < 0.01). The expression of SOX-9 protein in the experimental group of nasal mucosal mesenchymal stem cells after 7 and 14 days of intervention was significantly higher than that in the experimental group of bone marrow mesenchymal stem cells (P < 0.01). (4) The results show that transforming growth factor β3 has a cartilage stimulating effect on nasal mucosal mesenchymal stem cells and bone marrow mesenchymal stem cells. Nasal mucosal mesenchymal stem cells are also potential candidates for future cartilage repair strategies.

Key words: nasal mucosal mesenchymal stem cells, bone marrow mesenchymal stem cells, transforming growth factor-β3, cartilage injury, chondrogenic differentiation

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