中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (10): 1585-1590.doi: 10.3969/j.issn.2095-4344.2014.10.017

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

乳腺干细胞培养基的建立及有效性验证

张军红1,2,杨  晶3,豆晓伟1,王春华4,李  青5,赵春华1   

  1. 1中国医学科学院基础医学研究所,北京协和医学院基础学院组织工程中心,细胞生物学系,北京市  1000051;河北省邢台市眼科医院,河北省眼病治疗中心,河北省眼科研究所,2病理科,4耳鼻喉科,河北省邢台市  054000;3河北医科大学生理学教研室,河北省石家庄市  050017;5贵阳医学院附属医院骨科,贵州省贵阳市  550004
  • 出版日期:2014-03-05 发布日期:2014-03-05
  • 通讯作者: 赵春华,博士,教授,博士生导师,中国医学科学院基础医学研究所,北京协和医学院基础学院组织工程中心,细胞生物学系,北京市 100005
  • 作者简介:张军红,女,1974年生,河北省邢台市人,汉族,2008年河北医科大学毕业,主治医师,主要从事干细胞组织工程、癌症干细胞及其在临床应用的研究。
  • 基金资助:

    国家重大科学研究计划(973)资助项目(2011CB964900);国家863项目(2011AA020100);河北省教育厅青年基金项目(2011154);邢台市科技支撑计划资助项目(2013ZC062)

Creation and effectiveness of mammary stem cell medium

Zhang Jun-hong 1, 2, Yang Jing3, Dou Xiao-wei1, Wang Chun-hua4, Li Qing5, Zhao Chun-hua1   

  1. 1 Center of Tissue Engineering, Department of Cell Biology, Basic Medical College of Peking Union Medical College & Basic Institute of Chinese Academy of Medical Science, Beijing 100005, China; 2 Department of Pathology, 4 Department of Otorhinolaryngology, Xingtai Eye Hospital, Xingtai 054000, Hebei Province, China; 3 Department of Physiology, Hebei Medical University, Shijiazhuang 050017, Hebei Province, China; 5 Department of Orthopaedics, Affiliated Hospital of Guiyang Medical College, Guiyang 550004, Guizhou Province, China
  • Online:2014-03-05 Published:2014-03-05
  • Contact: Zhao Chun-hua, M.D., Professor, Doctoral supervisor, Center of Tissue Engineering, Department of Cell Biology, Basic Medical College of Peking Union Medical College & Basic Institute of Chinese Academy of Medical Science, Beijing 100005, China
  • About author:Zhang Jun-hong, Attending physician, Center of Tissue Engineering, Department of Cell Biology, Basic Medical College of Peking Union Medical College & Basic Institute of Chinese Academy of Medical Science, Beijing 100005, China; Department of Pathology, Xingtai Eye Hospital, Xingtai 054000, Hebei Province, China
  • Supported by:

    the Major State Basic Research Development Program of China (973 Program), No. 2011CB964900; the National High Technology Research and Development Program of China (863 Program), No. 2011AA020100; the Youth Foundation of Hebei Provincial Education Bureau, No. 2011154; the Scientific Supporting Plan of Xingtai City, No. 2013ZC062

摘要:

背景:干细胞培养基,尤其是乳腺干细胞培养基现阶段尚无有效的制备方法。
目的:利用Sca-1+乳腺细胞验证自制乳腺干细胞培养基的有效性。
方法:用BM培养基培养乳腺器官样小体,6 d后以免疫荧光方法监测成纤维细胞Sca-1和vimentin的表达。筛选出MaECM培养基,培养乳腺细胞6 d后,免疫磁珠筛选Sca-1+和Sca-1-细胞群,流式细胞术分析Sca-1阳性细胞的纯度,1×104 Sca-1+或Sca-1-细胞种植在4只鼠双侧乳腺脂肪垫上,6-8周后取出乳腺脂肪垫,以卡红整体染色和苏木精-伊红染色分析长出乳腺的结构数量。
结果与结论:乳腺器官样小体用BM培养基培养6 d后,检测到大量Sca-1和vimentin阳性的成纤维细胞,说明BM培养基不适合分离Sca-1+乳腺干细胞。筛选出的MaECM培养基能够抑制成纤维的生长。磁珠筛选后,流式细胞术检测Sca-1+细胞在Sca-1+和Sca-1-细胞群的纯度分别是92%和5%。移植实验显示在8个种植Sca-1+细胞的脂肪垫生长出6个乳腺结构;而在8个种植Sca-1-细胞的脂肪垫中除1只鼠死亡,其余脂肪垫中均未长出乳腺结构。提示MaECM培养基适用于培养鼠乳腺干细胞。


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


全文链接:

关键词: 干细胞, 培养, 乳腺干细胞, 成纤维细胞, Sca-1, 乳腺干细胞培养基, 国家重大科学研究计划(973)资助项目, 863项目

Abstract:

BACKGROUND: Now in mammary stem cell research, no proper mammary stem cell medium is provided to culture mammary stem cells.
OBJECTIVE: To create a mammary stem cell medium and validate its application by isolating Sca-1+ mammary stem cells.
METHODS: We first used BM medium to culture mammary organoids, and after 6 days, the expression of Sca-1 and vimentin was detected in fibroblasts by immunofluoresence method. Then, we established MaECM medium which arrested fibroblasts growth. After 6 days culture of mammary organoids by MaECM medium, Sca-1+ and  Sca-1- cell populations were sorted out by magnetic sorting and the purity was analyzed by flow cytometry. Sorted 1×104 Sca-1+ or Sca-1- cells were transplanted into the bilateral mammary fat pads of four mice, and after 6-8 weeks, the fat pads were harvested for whole-mount immunohistochemical analysis and hematoxylin-eosin staining.
RESULTS AND CONCLUSION: After 6 days culture of mammary organoids under BM medium, small-sized colonies were generated around lots of fibroblasts. Immunofluoresence staining detected strong expression of vimentin and Sca-1 in fibroblasts, indicating that the BM medium is not suitable to isolate Sca-1+ mammary stem cell. The MaECM medium promoted the proliferation of mammary epithelial cells whereas arrested fibroblasts growth. After 6 days culture of mammary organoids under MaECM medium and magnetic sorting, the flow cytometry showed that the purity of Sca-1+ cell reached 92% and 5% in the Sca-1+ and Sca-1- population, respectively. The results from transplantation test showed that six mammary outgrowths were regenerated out of eight injected fat pads in the Sca-1+ cells transplantation, but in the Sca-1- transplantation population, one mouse died and the other transplants failed to produce outgrowths. We developed the MaECM medium which promoted the proliferation of mammary epithelial cells whereas arrested Sca-1+ fibroblasts growth. Using the medium, we confirmed that Sca-1+ mammary cells have capacity of isolating mammary stem cells.


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


全文链接:

Key words: stem cells, breast neoplasms, fibroblasts, culture media, fluoroimmunoassay

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