中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (21): 3394-3399.doi: 10.3969/j.issn.2095-4344.2017.21.019

• 干细胞基础实验 basic experiments of stem cells • 上一篇    下一篇

青藤碱对大鼠骨髓来源树突状细胞分化成熟的影响

黄江波1,罗志刚1,高红强2,刘 利1,何群君1,李建军1,言彩红1,龙向阳1   

  1. 1南华大学附属第二医院,湖南省衡阳市 421001;2湖南省儿童医院,湖南省长沙市  410007
  • 修回日期:2017-06-21 出版日期:2017-07-28 发布日期:2017-08-02
  • 通讯作者: 罗志刚,教授,硕士生导师,南华大学附属第二医院,湖南省衡阳市 421001
  • 作者简介:黄江波,男,1969年生,2004年中南大学毕业,博士,副主任医师,硕士生导师,主要从事泌尿外科疾病基础和临床相关研究。现工作单位为湖南中医药大学第二附属医院。
  • 基金资助:

    国家自然科学基金面上项目(81273754)

Sinomenine effects on differentiation and maturation of rat bone marrow-derived dendritic cells

Huang Jiang-bo1, Luo Zhi-gang1, Gao Hong-qiang2, Liu Li1, He Qun-jun1, Li Jian-jun1, Yan Cai-hong1, Long Xiang-yang1   

  1. 1the Second Affiliated Hospital, University of South China, Hengyang 421001, Hunan Province, China; 2Hunan Provincial Children’s Hospital, Changsha 410007, Hunan Province, China
  • Revised:2017-06-21 Online:2017-07-28 Published:2017-08-02
  • Contact: Luo Zhi-gang, Professor, Master’s supervisor, the Second Affiliated Hospital, University of South China, Hengyang 421001, Hunan Province, China
  • About author:Huang Jiang-bo, M.D., Associate chief physician, Master’s supervisor, the Second Affiliated Hospital, University of South China, Hengyang 421001, Hunan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81273754

摘要:

文章快速阅读:

文题释义:
树突状细胞:
体内最主要的抗原呈递细胞,根据其成熟程度的不同分为成熟树突状细胞和未成熟树突状细胞。树突状细胞可因其成熟状态的不同而分别具有免疫应答和免疫耐受功能。目前的研究观点认为成熟树突状细胞诱导免疫应答反应,未成熟树突状细胞诱导免疫耐受。
青藤碱:是从中药防己科植物青风藤中提取的一种生物碱单体,具有镇静、镇痛、镇咳、抗心律失常、抗炎和免疫抑制等药理作用,临床上主要用于类风湿性关节炎等各种风湿病以及心律失常的治疗。近年来随着对其免疫抑制作用研究的逐步深入,青藤碱也应用于移植免疫研究。

 

摘要
背景:
利用未成熟树突状细胞诱导供体特异性免疫耐受有可能成为防治器官移植排斥反应的重要途径。
目的:探讨青藤碱对大鼠来源骨髓树突状细胞体外分化及成熟的影响。
方法:取大鼠股骨、胫骨骨髓来源树突状细胞的前体细胞,经粒-巨噬细胞集落刺激因子及白细胞介素4作用诱导出未成熟树突状细胞,第7天加入脂多糖刺激成熟,在刺激未成熟树突状细胞成熟时,分为对照组和低、中、高不同剂量的青藤碱处理组,作用48 h后收获树突状细胞,倒置相差显微镜观察细胞形态学特征,流式细胞仪检测细胞表型CD80、RT1B的表达,ELISA 检测培养上清白细胞介素12水平,混合淋巴细胞反应检测树突状细胞刺激同种异体T淋巴细胞活化的能力。  
结果与结论:①倒置显微镜下观察,对照组可见细胞符合成熟树突状细胞形态特性;青藤碱低剂量组可见绝大部分树突状细胞成熟;青藤碱中剂量组细胞部分悬浮,成熟度差;青藤碱高剂量组大部分细胞尚未成熟;②与对照组相比,青藤碱低、中、高剂量组CD80表达显著降低(P < 0.05);与对照组相比,青藤碱中、高剂量组RT1B表达显著降低(P < 0.05);③与对照组相比,青藤碱中、高剂量组培养上清中IL-12p70水平显著降低(P < 0.01);④与对照组相比,青藤碱中、高剂量组刺激T淋巴细胞增殖的能力显著降低(P < 0.05);⑤结果表明,青藤碱能抑制树突状细胞进一步成熟。

关键词: 干细胞, 分化, 青藤碱, 树突状细胞, 分化成熟, 免疫耐受, 国家自然科学基金

Abstract:

BACKGROUND: It may be an important approach to avoiding organ transplant rejection by utilizing immature dendritic cells to induce donor-specific immunologic tolerance.

OBJECTIVE: To study the effect of sinomenine on the differentiation and maturation of rat bone marrow-derived dendritic cells in vitro.
METHODS: Bone marrow-derived dendritic cells were isolated from the rat femur and tibia, and immature dendritic cells were induced by granulocyte-macrophage colony stimulating factor and interleukin-4. On day 7, lipopolysaccharide was added and the cells were cultured to generate mature dendritic cells. Cells were divided into control group and low-, middle- and high-dose sinomenine treatment groups (SNL, SNM, SNH groups). Forty hours later, dendritic cells were harvested, and cell morphology was observed by inverted phase contrast microscope. The expression of CD80 and RT1B was detected by flow cytometry. ELISA was used to detect the expression of interleukin-12. The mixed lymphocyte reaction was used to detect the ability of dendritic cells to stimulate the activation of allogeneic T lymphocytes. 
RESULTS AND CONCLUSION: (1) Under the inverted microscope, the morphology of mature dendritic cells was observed in the control group; in the SNL group most dendritic cells were visible; in the SNM group, there were partially suspended cells with poor maturation; and in the SNH group, most of the cells were not mature. (2) The expression of CD80 in the control group was significantly lower than that in the SNL, SNM and SNH groups (P < 0.05), and the expression of RT1B was significantly reduced in the SNM and SNH groups than the control group. (3) Compared with the control group, the level of IL-12p70 in the cell supernatant was significantly decreased in the SNM and SNH groups (P < 0.01). (4) The ability of dendritic cells to stimulate T lymphocyte proliferation in the SNM and SNH groups was significantly decreased compared with the control group (P < 0.05). To conclude, sinomenine can inhibit the maturation of dendritic cells.

Key words: Dendritic Cells, Immune Tolerance, Sinomenium, Tissue Engineering

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