中国组织工程研究 ›› 2022, Vol. 26 ›› Issue (24): 3870-3874.doi: 10.12307/2022.568

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

体外诱导人胎盘来源间充质干细胞向肝细胞分化

梁婷婷1,陈  黎2,范明松2,张国英2,张世昌1   

  1. 南京医科大学第一附属医院,1检验学部,2产科,江苏省南京市   210029
  • 收稿日期:2021-05-22 接受日期:2021-06-17 出版日期:2022-08-28 发布日期:2022-01-24
  • 通讯作者: 张世昌,博士,副教授,硕士生导师,南京医科大学第一附属医院检验学部,江苏省南京市 210029
  • 作者简介:梁婷婷,女,1997年生,江苏省扬州市人,汉族,2019年江苏大学毕业,硕士,主要从事干细胞与再生医学研究。
  • 基金资助:
    国家自然科学基金项目(81671836),项目负责人:张世昌

In vitro differentiation of human placenta-derived mesenchymal stem cells into hepatocytes

Liang Tingting1, Chen Li2, Fan Mingsong2, Zhang Guoying2, Zhang Shichang1   

  1. 1Department of Laboratory Medicine, 2Department of Obstetrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
  • Received:2021-05-22 Accepted:2021-06-17 Online:2022-08-28 Published:2022-01-24
  • Contact: Zhang Shichang, MD, Associate professor, Master’s supervisor, Department of Laboratory Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
  • About author:Liang Tingting, Master, Department of Laboratory Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81671836 (to ZSC)

摘要:

文题释义:
胎盘间充质干细胞:是一种起源于中胚层、来源于胎盘组织、具有自我复制能力的多潜能细胞。与其他组织来源间充质干细胞比较,具有更强的自我更新和多向分化能力、取材方便、来源广泛、免疫原性低等优势,为许多疾病的干细胞治疗提供理想的间充质干细胞来源。
肝功能衰竭:当受到多种因素引起严重损害时,造成肝细胞大量坏死,导致肝功能发生严重障碍或失代偿,进而出现以凝血机制障碍和黄疸、肝性脑病、腹水等为主要表现的一组临床症候群。治疗肝功能衰竭需要大量高质量肝细胞通过细胞移植或体外生物人工肝代偿肝脏功能,以过渡到自身肝再生或肝移植。

背景:间充质干细胞是治疗肝功能衰竭的重要细胞来源,将其诱导分化为肝细胞后能提高肝功能衰竭的治疗效果。
目的:探讨胎盘组织来源间充质干细胞在体外诱导分化为成熟肝细胞的可行性,为其用于肝功能衰竭治疗奠定基础。
方法:从人胎盘组织中分离培养人胎盘来源间充质干细胞,采用流式细胞分析、多向诱导分化等方法鉴定。应用多细胞因子将胎盘间充质干细胞向肝细胞诱导分化22 d,采用免疫荧光染色检测肝细胞标志物的表达变化,糖原染色检测细胞的糖原合成能力。
结果与结论:①倒置显微镜下可见分离培养的细胞为梭形或成纤维细胞样细胞,增殖迅速,传10代后细胞形态未见明显变化;②流式细胞分析结果显示CD73、CD90、CD105、CD44、CD166、CD29、CD54、HLA-ABC在胎盘间充质干细胞中阳性率超过95%,而CD34、CD45、CD117、CD14、CD19、CD133、CD31、HLA-DR均为阴性;③经成脂、成骨、成软骨细胞诱导分化后,油红O、茜素红、阿辛蓝染色均为阳性;④向肝细胞诱导分化22 d后,呈圆形或多角形、细胞界限明显的典型肝细胞形态,免疫荧光染色显示大量细胞表达肝细胞表面标志物白蛋白、细胞角蛋白18、HepPar1、CYP7A1,糖原染色为阳性;⑤结果表明,从人胎盘组织分离培养的细胞为间充质干细胞,人胎盘间充质干细胞在体外可诱导分化为成熟肝细胞,有望为肝功能衰竭治疗提供可靠的肝细胞来源。

https://orcid.org/0000-0003-2240-4076 (梁婷婷) ;https://orcid.org/0000-0002-6587-2518 (张世昌)

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: 干细胞, 间充质干细胞, 胎盘, 肝细胞, 肝衰竭, 成熟肝细胞, 体外诱导

Abstract: BACKGROUND: Mesenchymal stem cells are an attractive source of therapies for liver failure. The differentiation of mesenchymal stem cells into hepatocytes can improve the therapeutic effect of liver failure.  
OBJECTIVE: To investigate the feasibility of placenta derived mesenchymal stem cells to differentiate into mature hepatocytes in vitro for the treatment of liver failure.
METHODS:  Placenta-derived mesenchymal stem cells were isolated and cultured from human placenta tissue. The surface markers and differentiation potential of the isolated cells were identified by flow cytometry, and multidirectional induction. Placenta-derived mesenchymal stem cells were induced into hepatocytes by several cytokines for 22 days. Hepatic markers of induced cells were detected by immunofluorescence staining. Glycogen staining was used to detect the glycogen synthesis ability of cells.  
RESULTS AND CONCLUSION: (1) Under the inverted microscopy, the cultured cells were spindle or fibroblast-like cells, which proliferated rapidly. There was no obvious change in cell morphology after 10 passages. (2) Flow cytometry results revealed that the positive rate of CD73, CD90, CD105, CD44, CD166, CD29, CD54, and HLA-ABC in placenta-derived mesenchymal stem cells was more than 95%, while CD34, CD45, CD117, CD14, CD19, CD133, CD31, and HLA-DR were all negatively expressed. (3) The results of oil red O, alizarin red, and alcian blue staining were positive after adipogenic, osteogenic and chondrogenic differentiation of placenta-derived mesenchymal stem cells. (4) After 22 days of hepatic differentiation, these cells exhibited typical morphology of hepatocytes such as round or polygonal shape with obvious cell boundary. Immunofluorescence staining showed that a large number of differentiated cells expressed albumin, CK-18, HepPar1, and CYP7A1 after induction. The positive staining of differentiated cells was observed by glycogen staining. (5) Our results demonstrated that the cells isolated from placenta were mesenchymal stem cells, and placenta-derived mesenchymal stem cells can differentiate into mature hepatocytes in vitro, which could provide reliable sources of hepatocytes for the treatment of liver failure.

Key words: stem cells, mesenchymal stem cells, placenta, hepatocytes, liver failure, mature hepatocytes, in vitro induction

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