中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (2): 207-212.doi: 10.3969/j.issn.2095-4344.2015.02.009

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

小鼠脾脏B淋巴细胞纯化培养方法的建立

李文娟,邹家琦,韩欣欣,田志辉,刘  杰,李海东   

  1. 天津医科大学基础医学院生物化学与分子生物学系,天津市  300070
  • 收稿日期:2014-12-16 出版日期:2015-01-08 发布日期:2015-01-08
  • 通讯作者: 李海东,博士,教授,天津医科大学基础医学院生物化学与分子生物学系,天津市 300070
  • 作者简介:李文娟,女,1988年生,内蒙古包头市人,汉族,天津医科大学在读硕士,主要从事分子免疫学研究。
  • 基金资助:

    国家自然科学基金资助项目(81070271)

Purification and culture methods of murine splenic B-lymphocytes

Li Wen-juan, Zou Jia-qi, Han Xin-xin, Tian Zhi-hui, Liu Jie, Li Hai-dong   

  1. Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tianjin Medical University, Tianjin 300070, China
  • Received:2014-12-16 Online:2015-01-08 Published:2015-01-08
  • Contact: Li Hai-dong, M.D., Professor, Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tianjin Medical University, Tianjin 300070, China
  • About author:Li Wen-juan, Studying for master’s degree, Department of Biochemistry and Molecular Biology, School of Basic Medicine, Tianjin Medical University, Tianjin 300070, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81070271

摘要:

背景:B淋巴细胞是机体免疫系统重要的参与者,目前的研究主要采用磁珠、补体等方法进行B淋巴细胞的分离纯化,但是这些方法费用高或者细胞损伤大、纯度低,体外分离、培养B淋巴细胞的方法还有待进一步改进。
目的:探讨从小鼠脾脏细胞中对B淋巴细胞同时进行分离、培养的方法。采用加入白细胞介素4、脂多糖或者CD3单克隆抗体及其组合,探讨体外分离、培养小鼠脾脏B淋巴细胞的适宜条件。
方法:体外分离培养小鼠脾脏细胞,随机分为7组,分别用白细胞介素4,CD3,脂多糖,白细胞介素4+CD3,白细胞介素4+脂多糖,CD3+脂多糖组进行干预、将未给予刺激的脾细胞作为对照组。用流式细胞仪检测在不同培养条件下小鼠脾脏细胞T、B淋巴细胞及其亚群的变化。
结果与结论:与对照组比较,白细胞介素4组淋巴细胞在培养后第3-5天数量达到高峰;脂多糖组在培养初期无明显作用,第3天开始淋巴细胞数量有明显的增加,第5天达到高峰;培养体系中加入CD3单克隆抗体,可导致T淋巴细胞消失,培养2 d后,可得到较为单一的B淋巴细胞,其细胞数量在第3天达到高峰。其中B220+IgD+成熟B淋巴细胞亚群数量显著增加。体外培养24 h后,各组B220+CD93+Transitional B淋巴细胞亚群均完全消失。结果说明,体外培养的小鼠脾脏细胞加入CD3单克隆抗体和白细胞介素4可以去除T淋巴细胞,并维持成熟B淋巴细胞的生存和增殖。

 


中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

关键词: 组织构建, 组织工程, 小鼠脾脏, B淋巴细胞, T淋巴细胞, 培养, CD3单克隆抗体, 白细胞介素4, 脂多糖, 流式细胞术, 国家自然科学基金

Abstract:

BACKGROUND: B-lymphocytes are an important participant in the immunity system. Currently, magnetic beads and complement methods are mainly used to isolate and purify B-lymphocytes. However, these methods are costly or cause large cell damage and low purity, which need further improvement.
OBJECTIVE: To explore the isolation and culture methods of B-lymphocytes from mouse spleen and to study suitable conditions for B-lymphocyte isolation and culture in vitro by using interleukin-4, lipopolysaccharide, CD3 monoclonal antibody or their combination.
METHODS: B-lymphocytes from mouse spleen were isolated and randomly divided into seven groups, respectively treated with interleukin-4, CD3 monoclonal antibody, lipopolysaccharide, interleukin-4+CD3, interleukin-4+lipopolysaccharide, CD3+lipopolysaccharide, and no stimulation (control group). Flow cytometry was used to detect the changes in the number and proportion of T-lymphocytes, B lymphocytes, and their subpopulations under different culture conditions.
RESULTS AND CONCLUSION: The number of lymphocytes peaked at 3-5 days after addition of interleukin-4. In the lipopolysaccharide group, the number of lymphocytes began to increase at 3 days, and then peaked at 5 days. T-lymphocytes disappeared after addition of CD3 monoclonal antibody, so relatively pure B-lymphocytes could be obtained after 2 days and the number of B-lymphocytes reached the peak at 3 days. The number of mature B-lymphocytes (B220+IgD+) increased significantly after addition of CD3 antibody. In all the conditions we tested, transitional B cell subset (B220+CD93+) disappeared completely after 24 hours of culture. Experimental results indicate that after addition of CD3 monoclonal antibody and interleukin-4, T-lymphocytes can be removed in mouse spleen cells cultured, but mature B-lymphocytes remain to survive and proliferate.

 


中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


全文链接:

Key words: Tissue Engineering, B-Lymphocytes, Interleukin-4, Lipopolysaccharides

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