中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (29): 4728-4733.doi: 10.3969/j.issn.2095-4344.2017.29.02

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

间充质干细胞归巢到大鼠肺气肿组织分化为肺血管内皮细胞

赵晓建1,卢彩平2,褚伟伟1,张亚肖1,张 冰1,甄 强1,王仁锋1,刘家宝1   

  1. 河北省石家庄市第一医院,1胸外科,2内分泌一科,河北省石家庄市 050000
  • 修回日期:2017-05-06 出版日期:2017-10-18 发布日期:2017-11-08
  • 通讯作者: 卢彩平,主治医师,河北省石家庄市第一医院内分泌一科,河北省石家庄市 050000
  • 作者简介:赵晓建,男,1981年生,汉族,硕士,主治医师,主要从事胸外科疾病胸腔镜微创手术研究。
  • 基金资助:

    石家庄市科技支撑计划项目(121461793)

Mesenchymal stem cells homing to rat lung emphysema followed by differentiation into pulmonary vascular endothelial cells

Zhao Xiao-jian1, Lu Cai-ping2, Chu Wei-wei1, Zhang Ya-xiao1, Zhang Bing1, Zhen Qiang1, Wang Ren-feng1, Liu Jia-bao1   

  1. 1Department of Thoracic Surgery, 2First Department of Endocrinology, First Hospital of Shijiazhuang, Shijiazhuang 050000, Hebei Province, China
  • Revised:2017-05-06 Online:2017-10-18 Published:2017-11-08
  • Contact: Lu Cai-ping, Attending physician, First Department of Endocrinology, First Hospital of Shijiazhuang, Shijiazhuang 050000, Hebei Province, China
  • About author:Zhao Xiao-jian, Master, Attending physician, Department of Thoracic Surgery, First Hospital of Shijiazhuang, Shijiazhuang 050000, Hebei Province, China
  • Supported by:

     the Science and Technology Supporting Plan of Shijiazhuang City, No.121461793

摘要:

文章快速阅读:

文题释义:
间充质干细胞移植治疗肺气肿的机制:
已证明间充质干细胞能修复肺气肿病变组织,一旦间充质干细胞在肺组织毛细血管停留,在局部微环境诱导和周围组织细胞相互作用下,可逐步迁移到肺间质、肺泡壁、肺毛细血管壁和小气道并分化成相应的细胞来发挥作用。另外间充质干细胞还具有强大的免疫抑制和调节功能,移植入体内的间充质干细胞有可能是通过抑制体内T淋巴细胞的活化,或者是通过与肺组织局部细胞相互作用,抑制和减轻肺组织局部的炎症反应,同时为损伤肺组织的修复提供有利环境。

 

摘要
背景:
间充质干细胞具有独特的归巢、免疫调节及抗炎作用,经静脉注射移植后能归巢到损害的靶器官及组织发挥其功能,修复受损组织。
目的:观察间充质干细胞移植后,肺气肿大鼠的肺组织病理改变。
方法:将24只雌性Wistar大鼠随机分为实验组、对照组、健康对照组,前两组应用烟熏加气管内滴入猪胰弹性蛋白酶的方法制作肺气肿模型,造模成功后,实验组尾静脉注射BrdU标记骨髓间充质干细胞,对照组注射PBS。14 d后,检测观察大鼠肺组织病理学变化,检测肺泡灌洗液中肿瘤坏死因子α水平,肺泡壁细胞凋亡指数、抗CD34及抗BrdU免疫组织化学变化。
结果与结论:①与健康对照组比较,对照组肿瘤坏死因子α水平、肺泡壁细胞凋亡指数升高(P < 0.01),抗Brdu及抗CD34相对面积减少(P < 0.01);与对照组比较,实验组肿瘤坏死因子α水平、肺泡壁细胞凋亡指数降低(P < 0.01),抗Brdu及抗CD34相对面积增加(P < 0.01);②肺组织病理学检查显示,对照组及实验组均呈现肺气肿样改变,但实验组轻于对照组;③结果表明,间充质干细胞能抑制实验性肺气肿的炎症反应及细胞凋亡,改善肺气肿病理学变化且骨髓间充质干细胞可分化为肺血管内皮细胞。

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
ORCID:
0000-0001-5137-8677(卢彩平)

关键词: 干细胞, 移植, 骨髓间充质干细胞, 肺气肿, 烟熏, 弹性蛋白酶, 模型, 炎症反应, 细胞凋亡, 免疫组化, 细胞示踪, 分化

Abstract:

BACKGROUND: Mesenchymal stem cells have unique homing, immunoregulation and anti-inflammatory properties. After intravenous injection, mesenchymal stem cells can home to the damaged target organs and tissues, and function to repair damaged tissues.
OBJECTIVE: To observe the pathological changes of lung tissues in rats with emphysema after mesenchymal stem cells transplantation.
METHODS: Twenty-four female Wistar rats were randomly divided into experimental group, control group and healthy control group. In the first two groups, the model of pulmonary emphysema was established by the method of dropping porcine pancreatic elastase. BrdU-labeled mesenchymal stem cells were injected into the tail vein of the rats in the experimental group, and PBS was injected in the control group. After 14 days, the pathological changes of lung tissues were observed. Tumor necrosis factor-α level, alveolar wall apoptotic index, anti-CD34 and anti-BrdU immunohistochemical changes in the bronchoalveolar lavage fluid were detected.
RESULTS AND CONCLUSION: Compared with the healthy control group, the tumor necrosis factor-α level and apoptotic index of alveolar wall cells increased (P < 0.01), and the relative areas of anti-Brdu and anti-CD34 decreased (P < 0.01) in the control group. Compared with the control group, the level of tumor necrosis factor-α and apoptotic index of alveolar wall cells decreased (P < 0.01), and the relative area of anti-Brdu and anti-CD34 increased (P < 0.01) in the experimental group. The histopathological findings showed that both the control group and the experimental group showed emphysema-like changes, but these changes were milder in the experimental group than the control group. To conclude, mesenchymal stem cells can inhibit inflammatory response and apoptosis in experimental emphysema, improve the pathological changes of the lung, and moreover, bone marrow mesenchymal stem cells can differentiate into lung vascular endothelial 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

Key words: Cell transplantation, Stem Cells, Mesenchymal stem cells, Pulmonary Emphysema, Bone marrow, Tissue Engineering

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