中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (29): 4656-4661.doi: 10.3969/j.issn.2095-4344.1794

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

长链非编码RNA肝癌高表达转录本促进人骨髓间充质干细胞向肝样细胞的分化

李  梦1,周  云2,禹亚彬3,王超群1,巩玉森1   

  1. 1徐州医科大学病理学教研室,江苏省徐州市  221004;2徐州市中心医院肿瘤放疗科,江苏省徐州市  221004;3淮安市第一人民医院肝胆胰外科,江苏省淮安市  223300
  • 修回日期:2019-04-07 出版日期:2019-10-18 发布日期:2019-10-18
  • 通讯作者: 巩玉森,硕士,主任医师,徐州医科大学病理学教研室,江苏省徐州市 221004
  • 作者简介:李梦,女,1992年生,江苏省淮安市人,汉族,在读硕士,主要从事长链非编码RNA的研究。
  • 基金资助:

    徐州市科技计划项目(KC17111),项目负责人:周云

Long-chain non-coding RNA highly up-regulated in liver cancer promotes the differentiation of human bone marrow mesenchymal stem cells into hepatocytes 

Li Meng1, Zhou Yun2, Yu Yabin3, Wang Chaoqun1, Gong Yusen1   

  1. 1Department of Pathology, Xuzhou Medical University, Xuzhou 221004, Jiangsu Province, China; 2Department of Radiation Oncology, Xuzhou Central Hospital, Xuzhou 221004, Jiangsu Province, China; 3Department of Hepatobiliary and Pancreatic Surgery, Huaian First People’s Hospital, Huaian 223300, Jiangsu Province, China
  • Revised:2019-04-07 Online:2019-10-18 Published:2019-10-18
  • Contact: Gong Yusen, Master, Chief physician, Department of Pathology, Xuzhou Medical University, Xuzhou 221004, Jiangsu Province, China
  • About author:Li Meng, Master candidate, Department of Pathology, Xuzhou Medical University, Xuzhou 221004, Jiangsu Province, China
  • Supported by:

    the Science and Technology Research Project of Xuzhou City, No. KC17111 (to ZY)

摘要:

文章快速阅读:

文题释义:
长链非编码RNA:
是长度大于 200个核苷酸的非编码 RNA,种类、数量、功能都不明确。研究表明, 长链非编码RNA在剂量补偿效应、表观遗传调控、细胞周期调控和细胞分化调控等众多生命活动中发挥重要作用,成为遗传学研究热点。
肝癌高表达转录本:课题组在熟练掌握骨髓间充质干细胞向肝细胞分化的基础上,通过RT-PCR技术检测了分化前后几种常见长链非编码RNA的表达,并且发现了肝癌高表达转录本在分化过程中表达量逐渐增多,因此提出假说:肝癌高表达转录本可能参与了分化过程。肝癌高表达转录本最初在人肝细胞肝癌中被众人熟知,在肝癌细胞中呈高度表达,后来在人胰腺癌、食管癌以及骨肉瘤等组织中也陆续检测到肝癌高表达转录本的异常表达。

 

摘要
背景:
骨髓间充质干细胞在体外可以被诱导分化为肝样细胞,但是细胞功能不成熟。研究表明,长链非编码RNA可以影响间充质干细胞的分化,但是关于长链非编码RNA肝癌高表达转录本是否能够参与骨髓间充质干细胞向肝细胞分化还未有报道。
目的:探讨长链非编码RNA肝癌高表达转录本在人骨髓间充质干细胞向肝样细胞分化中的作用。
方法:体外添加细胞因子诱导人骨髓间充质干细胞(购自上海中科院细胞库)向肝样细胞分化,诱导4周后倒置显微镜观察细胞的形态学变化,免疫荧光技术检测肝细胞特异性蛋白的表达,qRT-PCR检测分化过程中肝癌高表达转录本的表达;然后通过慢病毒转染构建稳定表达肝癌高表达转录本的人骨髓间充质干细胞株,以转染阴性对照病毒作为对照组,两组同时添加细胞因子进行肝向细胞诱导分化,qRT-PCR、Western blot检测过表达组与对照组肝细胞特异性基因、蛋白表达的差异。
结果与结论:①人骨髓间充质干细胞在体外添加细胞因子下可以成功被诱导分化为肝样细胞,在分化过程中肝癌高表达转录本的表达逐渐增高;②过表达肝癌高表达转录本后促进了人骨髓间充质干细胞诱导分化后肝细胞特异性基因及蛋白的表达;③结果表明,肝癌高表达转录本在人骨髓间充质干细胞向肝样细胞分化中发挥着至关重要的作用,将为细胞治疗肝脏疾病奠定坚实的理论基础。


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
ORCID: 0000-0002-5386-3147(李梦)

关键词: 长链非编码RNA, 肝癌高表达转录本, 骨髓间充质干细胞, 肝细胞, 细胞分化, 肝细胞特异性基因

Abstract:

BACKGROUND: Human bone marrow mesenchymal stem cells can be induced to differentiate into hapatocytes without mature function. Long-chain non-coding RNA (lncRNA) plays an important part in the differentiation of mesenchymal stem cells. To date, there is still no report on whether the lncRNA highly up-regulated in liver cancer (HULC) is involved in the differentiation of bone marrow mesenchymal stem cells into hepatocytes.
OBJECTIVE: To investigate the mechanism of lncRNA HULC in the differentiation of human bone marrow mesenchymal stem cells into hepatocyte-like cells.
METHODS: Human bone marrow mesenchymal stem cells were purchased from the Cell Bank of Chinese Academy of Sciences, Shanghai, China and were cultured in the hepatic differentiation medium containing cytokines in vitro. After 4 weeks of induction, cell morphology was observed under inverted microscope. Hepatocyte specific proteins were analyzed by immunofluorescence. The expression of IncRNA HULC was examined by qRT-PCR. Bone marrow mesenchymal cell lines stably expressing IncRNA HULC were then produced through lentiviral transfection. Bone marrow mesenchymal stem cells transfected with negative lentivirus were used as controls. Two groups of cells were concurrently induced with the hepatic differentiation medium containing cytokines. The expressions of hepatocyte specific genes and proteins were detected and compared between the two groups by qRT-PCR and western blot, respectively.
RESULTS AND CONCLUSION: Human bone marrow mesenchymal stem cells could be successfully induced into hepatocytes in vitro through the addition of cytokines. The expression of IncRNA HULC was gradually increased during the differentiation. Overexpression of IncRNA HULC caused a marked increase in the expression of hepatocyte specific genes and proteins. To conclude, IncRNA HULC plays an important role in the differentiation of human bone marrow mesenchymal stem cells into hepatocytes. It will provide a theoretical basis for the application of cell therapy in liver diseases.

Key words: long-chain non-coding RNA, highly up-regulated in liver cancer, bone marrow mesenchymal stem cells, hepatocytes, cell differentiation, hepatocyte specific genes

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