中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (21): 3376-3380.doi: 10.3969/j.issn.2095-4344.0903

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

提高小鼠原代肝星状细胞获得率及纯度的分离方法

徐 莹1,张定棋1,2,慕永平1,陈佳美1,王清兰2,平 键1,刘 伟1,刘 平1,2   

  1. 1上海中医药大学,上海中医药大学附属曙光医院,上海市中医药研究院肝病研究所,肝肾疾病病证教育部重点实验室,上海中医临床重点实验室,上海市 201203;2上海中医药大学,上海高校中医内科学 E-研究院,上海市 201203
  • 修回日期:2018-03-13 出版日期:2018-07-28 发布日期:2018-07-28
  • 通讯作者: 刘平,博士,教授,上海中医药大学,上海中医药大学附属曙光医院,上海市中医药研究院肝病研究所,肝肾疾病病证教育部重点实验室,上海中医临床重点实验室,上海市 201203;上海中医药大学,上海高校中医内科学 E-研究院,上海市 201203; 刘伟,博士,助理研究员,上海中医药大学,上海中医药大学附属曙光医院,上海市中医药研究院肝病研究所,肝肾疾病病证教育部重点实验室,上海中医临床重点实验室,上海市 201203
  • 作者简介:徐莹,女,1989年生,宁夏回族自治区银川市人,汉族,上海中药大学在读博士,主要从事慢性肝病的研究。
  • 基金资助:

    国家自然科学基金重点项目(81530101);国家自然科学基金项目(81703681);上海市青年科技英才扬帆计划资助项目(17YF1419800);中国博士后科学基金资助项目(2016M601643)

An improved method for isolation of mouse primary hepatic stellate cells with high yield and purity

Xu Ying1, Zhang Ding-qi1, 2, Mu Yong-ping1, Chen Jia-mei1, Wang Qing-lan2, Ping Jian1, Liu Wei1, Liu Ping1, 2   

  1. 1Institute of Liver Diseases, Shuguang Hospital affiliated to Shanghai University of Traditional Chinese Medicine, Key Laboratory of Liver and Kidney Disease (Ministry of Education), Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai 201203, China; 2E-Institute of Traditional Chinese Internal Medicine, Shanghai Municipal Education Commission, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
  • Revised:2018-03-13 Online:2018-07-28 Published:2018-07-28
  • Contact: Liu Ping, M.D., Professor, Institute of Liver Diseases, Shuguang Hospital affiliated to Shanghai University of Traditional Chinese Medicine, Key Laboratory of Liver and Kidney Disease (Ministry of Education), Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai 201203, China; E-Institute of Traditional Chinese Internal Medicine, Shanghai Municipal Education Commission, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; Liu Wei, M.D., Assistant researcher, Institute of Liver Diseases, Shuguang Hospital affiliated to Shanghai University of Traditional Chinese Medicine, Key Laboratory of Liver and Kidney Disease (Ministry of Education), Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai 201203, China
  • About author:Xu Ying, Doctorate candidate, Institute of Liver Diseases, Shuguang Hospital affiliated to Shanghai University of Traditional Chinese Medicine, Key Laboratory of Liver and Kidney Disease (Ministry of Education), Shanghai Key Laboratory of Traditional Chinese Clinical Medicine, Shanghai 201203, China
  • Supported by:

    the Key Project of National Natural Science Foundation of China, No. 81530101; National Natural Science Foundation of China, No. 81703681; Shanghai Sailing Program, No. 17YF1419800; China Postdoctoral Science Foundation, No. 2016M601643

摘要:

文章快速阅读:

文题释义:
肝星状细胞:
又称贮脂细胞,是肝脏中的一种间质细胞,位于Disse间隙,胞体主要呈卵圆形或不规则形,胞质内富含类维生素A脂滴,正常肝脏中肝星状细胞的数目很少,与肝细胞数量之比为1∶20,其总体积占肝体积的1.4%。肝星状细胞主要具有以下功能:储存和代谢维生素A;合成和分泌少量的细胞外基质,主要有Ⅰ、Ⅲ、Ⅵ型胶原纤维;对内皮细胞起支撑作用,并有调节肝窦大小的作用;合成非胶原糖蛋白和蛋白多糖等功能。
小鼠原代肝星状细胞:从小鼠肝脏中可分离得到的一种可在体外增殖培养的原代间质细胞,广泛用于体外研究肝星状细胞的生物学特性,对肝纤维化及肝癌等肝脏疾病的研究有重要研究价值。

 

摘要
背景:
由于小鼠肝脏小、血管较细,其原代肝星状细胞分离的难度相对较大,且得率有限,难以满足体外实验需求。
目的:建立小鼠原代肝星状细胞高效稳定的分离方法,提高小鼠原代肝星状细胞的得率与纯度,为研究肝纤维化的机制奠定实验基础。
方法:取成年雄性C57BL/6小鼠,以无钙镁离子的前灌流液经门静脉充分灌注肝脏,再先后以1 g/L链霉蛋白酶和0.7 g/L Ⅳ型胶原酶灌注,使用Nycodenz进行梯度密度离心,获取中间层原代肝星状细胞,锥虫蓝染法观察肝星状细胞活力,流式细胞法检测细胞纯度,免疫荧光法检测Desmin表达,并于倒置显微镜下观察细胞培养3,5,7 d后的形态变化,PCR法检测培养3,5,7 d后α-平滑肌肌动蛋白及Ⅰ型胶原蛋白基因表达情况。
结果与结论:①每只小鼠肝脏可获得肝星状细胞(5.5±0.4)×106个,锥虫蓝检测细胞活力均大于95%,流式细胞法检测细胞纯度为94%,免疫荧光检测细胞高表达Desmin;②随着体外培养时间的延长,可见原代肝星状细胞逐渐由圆形向星型发展;③随培养天数增长,α-平滑肌肌动蛋白及Ⅰ型胶原蛋白表达逐渐升高;④结果提示,实验成功建立了高效分离小鼠肝星状细胞的方法,可为获得高纯度、高细胞活力的小鼠原代肝星状细胞提供技术方案,也为肝纤维化的机制研究提供技术保障。

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:
0000-0003-2633-3295(徐莹)

关键词: 肝星状细胞, 细胞分离技术, 原代细胞, 细胞外基质, 荧光鉴定, 肝纤维化, 细胞得率, 国家自然科学基金

Abstract:

BACKGROUND: Due to the small liver and fine blood vessels in the mice, it is difficult to isolate primary hepatic stellate cells, resulting in a limited yield which cannot meet the needs of in vitro experiments.
OBJECTIVE: To explore the high-performance and stable method for isolation of mouse primary hepatic stellate cells, with high yield and purity, thereby laying an experimental foundation for studying the mechanism of hepatic fibrosis.
METHODS: Adult male C57BL/6 mice undertook liver infusion with prefusion solution with no calcium and magnesium ions via the portal vein, followed by digestion using 1 g/L pronase and 0.7 g/L collagenase. Then, the liver samples were centrifuged with Nycodenz density gradient solution to obtain primary hepatic stellate cells from the middle layer. Trypan blue staining method was used to calculate cell viability, and flow cytometry method was used to measure cell purity. Immunofluorescence method was used to detect the expression of Desmin in cells. Cell morphology was observed under inverted microscope at 3, 5, 7 days of primary culture, and the expression of α-smooth muscle actin was detected by PCR.
RESULTS AND CONCLUSION: The yield of cells per mouse was (5.5±0.4)×106 cells. Trypan blue assay showed that the viability of isolated cells was over 95%, and the purity of isolated cells was 94% as measured by the flow cytometry. The cells highly expressed Desmin by immunofluorescence. With the prolongation of culture time in vitro, round cells were gradually changed into star-shaped cells, and the expression of α-smooth muscle actin and type I collagen gradually increased. This study successfully established the high-performance and stable method for isolation of mouse primary hepatic stellate cells, providing a technical scheme for obtaining high-purity and high-viability mouse primary hepatic stellate cells, and also providing a technical support for research on the mechanism of liver fibrosis.

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

Key words: Hepatocytes, Cell Separation, Tissue Engineering

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