中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (14): 1999-2006.doi: 10.3969/j.issn.2095-4344.2016.14.003

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

血管内皮祖细胞改善骨质疏松大鼠骨髓间充质干细胞的增殖及凋亡

刘竹影1,陈 颖2,刘 倩1,梁 源1,张 瑞1,文 艺1,丁 寅1   

  1. 1解放军第四军医大学口腔医院正畸科,军事口腔医学国家重点实验室,陕西省西安市  710032;2解放军第四军医大学药学院天然药物学教研室,陕西省西安市  710032
  • 收稿日期:2016-02-17 出版日期:2016-04-01 发布日期:2016-04-01
  • 通讯作者: 丁寅,博士,教授,主任医师,解放军第四军医大学正畸科,军事口腔医学国家重点实验室,陕西省西安市 710032
  • 作者简介:刘竹影,女,1991年生,河南省孟州市人,汉族,2016年解放军第四军医大学毕业,硕士,医师,主要从事口腔正畸临床与基础研究。
  • 基金资助:

    国家自然科学基金资助项目(81170982)

Indirect co-culture with endothelial progenitor cells improves proliferation and apoptosis of bone marrow mesenchymal stem cells of osteoporosis rats

Liu Zhu-ying1, Chen Ying2, Liu Qian1, Liang Yuan1, Zhang Rui1, Wen Yi1, Ding Yin1   

  1. 1State Key Laboratory of Military Stomatology, Department of Orthodontics, School of Stomatology, the Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China; 2Department of Natural Medicines, School of Pharmacy, the Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
  • Received:2016-02-17 Online:2016-04-01 Published:2016-04-01
  • Contact: Ding Yin, M.D., Professor, Chief physician, State Key Laboratory of Military Stomatology, Department of Orthodontics, School of Stomatology, the Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
  • About author:Liu Zhu-ying, Master, Physician, State Key Laboratory of Military Stomatology, Department of Orthodontics, School of Stomatology, the Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China
  • Supported by:

     the National Natural Science Foundation of China, No. 81170982

摘要:

文章快速阅读:

 

文题释义:

血管内皮祖细胞:1997年Asahara首次报道由外周血获得能分化为血管内皮细胞的前体细胞,此细胞表达CD34和血管内皮细胞生长因子受体2,在体外培养呈典型的长梭形,可形成管腔样结构,能够表达内皮细胞的特异性抗原,在缺血性动物模型中可观察到它们参与血管的生成,故命名为血管内皮祖细胞。研究发现,血管内皮祖细胞在组织工程骨中参与了血管的再生和修复。

Transwell间接共培养:此项技术的特点在于运用一种特殊的共培养工具进行细胞共培养,观察两种细胞的相互作用。该技术关键部分在于杯子底层有一张有通透性的聚碳酸酯膜,这层膜带有微孔,孔径最大为12.0 μm,最小为0.1 μm,使得培养的两细胞不能相互接触,实现非接触性共培养。

背景:研究发现雌激素缺乏骨髓间充质干细胞的活性降低。
目的:观察血管内皮祖细胞对去势骨髓间充质干细胞增殖及凋亡特性的影响。
方法:①选用6周龄健康雌性SD大鼠行双侧卵巢切除术,建立骨质疏松症动物模型,假手术组仅切除卵巢周围等量脂肪组织;②采用密度梯度离心结合差速贴壁法分离、培养大鼠骨髓间充质干细胞;采用密度梯度离心法结合差速贴壁法利用促进内皮细胞生长的条件培养基诱导培养血管内皮祖细胞;③利用Transwell小室建立血管内皮祖细胞、去势骨髓间充质干细胞间接共培养体系,另设置正常骨髓间充质干细胞-骨髓间充质干细胞组,去势骨髓间充质干细胞-骨髓间充质干细胞组;④采用流式细胞术检测血管内皮祖细胞对去势骨髓间充质干细胞增殖和凋亡的影响。
结果与结论:①间接共培养第3天,血管内皮祖细胞与去势骨髓间充质干细胞共培养组的S期细胞比例显著大于去势骨髓间充质干细胞组和正常骨髓间充质干细胞组,差异均有显著性意义(P < 0.05);②间接共培养第10天,血管内皮祖细胞与去势骨髓间充质干细胞共培养组骨髓间充质干细胞凋亡率显著小于去势骨髓间充质干细胞组和正常骨髓间充质干细胞组,差异均有显著性意义(P < 0.05);③通过血管内皮祖细胞和去势骨髓间充质干细胞间接共培养,发现血管内皮祖细胞可逆转体外去势骨髓间充质干细胞的增殖能力并且抑制其凋亡。
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: 0000-0001-9938-2878(丁寅)

关键词: 干细胞, 骨髓干细胞, 血管内皮祖细胞, 骨髓间充质干细胞, 绝经后骨质疏松, 去势大鼠骨质疏松模型, 间接共培养, 细胞增殖, 细胞凋亡, 国家自然科学基金

Abstract:

BACKGROUND: Previous studies have found that estrogen deficiency causes a reduction in the activity of bone marrow mesenchymal stem cells (BMSCs).
OBJECTIVE: To explore the effect of endothelial progenitor cells (EPCs) on the BMSCs proliferation and apoptosis ability of osteoporosis rats.
METHODS: Healthy female Sprague-Dawley rats, 6 weeks old, were enrolled and subjected to bilateral ovariectomy to make osteoporosis models. BMSCs and EPCs were isolated using density gradient centrifugation combined with adhesion method, and identified with surface markers, cell proliferation and immunocytochemistry in vitro. We used Transwell inserts to establish EPCs and OVX-BMSCs indirect co-culture system. Control groups were OVX-BMSCs group and sham-BMSCs group in which rats were only subjected to remove the equal amount of fat tissues around the ovary. Flow cytometry was applied to detect BMSCs proliferation and apoptosis ability.
RESULTS AND CONCLUSION: Compared with the control groups, the results of flow cytometry test showed that the proportion of OVX-BMSCs at S phase was significantly increased at 3 days of indirect co-culture with EPCs and the apoptosis rate was significanty reduced at 10 days of indirect co-culture with EPCs (both P < 0.05). These results suggest that EPCs can promote the proliferation but inhibit the apoptosis of OVX- BMSCs.
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: Bone Marrow, Mesenchymal Stem Cells, Osteoporosis, Postmenopausal, Endothelial Cells, Coculture Techniques, Cell Proliferation, Apoptosis, Tissue Engineering