中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (9): 1425-1431.doi: 10.3969/j.issn.2095-4344.0475

• 干细胞移植 stem cell transplantation • 上一篇    下一篇

慢病毒载体转染内皮祖细胞移植治疗肺动脉高压并黄芪总苷干预

周小雄1,魏伟超2,孙 策2,叶桃春1,王 嵩1,卿立金1,吴 辉1,冼绍祥1   

  1. 1广州中医药大学第一附属医院心血管科,广东省广州市 510400;2广州中医药大学,广东省广州市 510006
  • 修回日期:2017-12-30 出版日期:2018-03-28 发布日期:2018-04-03
  • 通讯作者: 冼绍祥,博士,教授,广州中医药大学第一附属医院心血管科,广东省广州市 510400
  • 作者简介:周小雄,男,1980年生,江西省安福县人,汉族,广州中医药大学同等学历申请博士学位人员,主治医师,主要从事肺动脉高压的基础和临床研究。
  • 基金资助:

    广东省医学科学技术研究基金(A2016606);广东省高水平大学建设项目

Transplantation of lentiviral-transfected endothelial progenitor cells for pulmonary hypertension and the interventional effect of astragalosides

Zhou Xiao-xiong1, Wei Wei-chao2, Sun Ce2, Ye Tao-chun1, Wang Song1, Qing Li-jin1, Wu Hui1, Xian Shao-xiang1   

  1. 1Department of Cardiovascular Medicine, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510400, Guangdong Province, China; 2Guangzhou University of Chinese Medicine, Guangzhou 510006, Guangdong Province, China
  • Revised:2017-12-30 Online:2018-03-28 Published:2018-04-03
  • Contact: Xian Shao-xiang, M.D., Professor, Department of Cardiovascular Medicine, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510400, Guangdong Province, China
  • About author:Zhou Xiao-xiong, Attending physician, Department of Cardiovascular Medicine, the First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510400, Guangdong Province, China
  • Supported by:

    the Medical Science and Technology Research Foundation of Guangdong Province, No. A2016606; the High-Level University Construction Program of Guangdong Province

摘要:

文章快速阅读:

文题释义:
内皮祖细胞:
是一类能分化为成熟内皮细胞的祖细胞,存在于骨髓、脐血、成人外周血及成人组织器官的大、中血管,在血管损伤时能趋化迁移至受损部位,代替凋亡内皮细胞,维持血管内膜的完整性。
RNA干扰技术:是一种由双链RNA引发的基因沉默效应,分长双链RNA(dsRNA)和短发夹RNA(shRNA),可快速、高效、特异地抑制靶基因,并且shRNA的胞内稳定性较好,可在体内长期发挥作用,应用较广泛。

 

摘要
背景:
CD40通路的激活对内皮祖细胞的疗效起负向调节作用,而抑制该通路能增强内皮祖细胞的生物学功能。
目的:比较CD40基因沉默的内皮祖细胞(shRNA-CD40转染内皮祖细胞)与常规内皮祖细胞移植治疗肺动脉高压模型的疗效,并探讨黄芪总苷在内皮祖细胞移植治疗肺动脉高压中的干预作用。
方法:将90只SD大鼠以随机数字表法分为5组,分别为正常对照组(n=24)、模型组(n=24)、慢病毒转染组(n=18)、常规移植组(n=18)及黄芪总苷组(n=6)。除正常对照组外,其余4组均以野百合碱诱发肺动脉高压模型,慢病毒转染组大鼠分别于野百合碱注射后第7,14,21天尾静脉注射Lv-shRNA-CD40转染的内皮祖细胞,每个时间点6只;常规移植组大鼠分别于野百合碱注射后第7,14,21天尾静脉注射内皮祖细胞,每个时间点6只;黄芪总苷组在野百合碱注射后第21天时间点注射Lv-shRNA-CD40转染的内皮祖细胞,同时在第1-21天每日一次给予80 mg/(kg•d)黄芪总苷腹腔注射。野百合碱注射后第28天,进行血流动力学、血浆内皮素1水平与右心室肥大指数检测。
结果与结论:①与正常对照组比较,模型组右心室压力、平均肺动脉压、右心室肥大指数均升高(P < 0.05)。与模型组比较,慢病毒转染组、常规移植组右心室压力、平均肺动脉压、右心室肥大指数均明显下降(P < 0.05)。随着移植内皮祖细胞时间的延长,2个细胞移植组右心室压力、平均肺动脉压、右心室肥大指数均有逐渐升高趋势,但慢病毒转染组变化差异不明显;②与正常对照组比较,模型组大鼠血浆内皮素1水平升高(P < 0.05);与模型组比较,慢病毒转染组、常规移植组血浆内皮素1水平降低(P < 0.05);慢病毒转染组相同移植时间点的血浆内皮素1水平低于常规移植组(P < 0.05);③黄芪总苷组的血流动力学、血浆内皮素1水平及右心室肥大指数均优于慢病毒转染组(P < 0.05);④结果表明,CD40基因沉默的内皮祖细胞治疗肺动脉高压的效果更明显且更持久,黄芪总苷可增强其治疗效果。

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: 0000-0001-7677-1598(周小雄)

关键词: 黄芪总苷, 干细胞, 内皮祖细胞, 慢病毒载体, 肺动脉高压, CD40, 右心室压力, 肺动脉压, 右心室肥大指数, 内皮素1

Abstract:

BACKGROUND: Activation of CD40 pathway negatively regulates the therapeutic effect of endothelial progenitor cells (EPCs), while inhibition of this pathway can enhance the biological function of the cells.
OBJECTIVE: To compare the therapeutic effects of CD40-silenced EPCs (EPCs shRNA-CD40) and conventional EPCs transplantation in an animal model of pulmonary hypertension, and to explore the interventional effect of astragalosides on EPCs transplantation in the treatment of pulmonary hypertension.
METHODS: Ninety SD rats were randomly divided into five groups: normal control group (n=24), model group (n=24), lentivirus transfection group (n=18), conventional transplantation group (n=18) and astragaloside group (n=6). Except the normal control group, the remaining four groups were given monocrotaline to induce pulmonary hypertension. Rats in the lentivirus transfection and conventional transplantation groups were given intravenous injection of Lv-shRNA-CD40-transfected EPCs and conventional EPCs respectively at 7, 14, 21 days after modeling (n=6 at each time point). Rats in the astragaloside group were given daily intraperitoneal injection of 80 mg/(kg•d) astragaloside within 1-21 days after modeling, and then Lv-shRNA-CD40-transfected EPCs were intravenously injected at 21 days after modeling. Hemodynamics, plasma endothelin-1 level and right ventricular hypertrophy index were detected at 28 days after modeling.
RESULTS AND CONCLUSION: (1) After modeling, right ventricular pressure, mean pulmonary arterial pressure and right ventricular hypertrophy index were all increased compared with the normal control group (P < 0.05), while these indices were then decreased significantly after EPCs transplantation (P < 0.05). With the increasing of transplantation time, there was an increasing trend in the right ventricular pressure, mean pulmonary arterial pressure and right ventricular hypertrophy index in the two EPCs transplantation groups, but this trend was not remarkable in the lentivirus transfection group. (2) After modeling, the level of endothelin-1 was increased significantly compared with the normal control group (P < 0.05), and then decreased after EPCs transplantation (P < 0.05). The level of endothelin-1 in the lentivirus transfection group was significantly lower than that in the conventional transplantation group at the same time point (P < 0.05). (3) A significant improvement in hemodynamics, plasma endothelin-1 level and right ventricular hypertrophy index was observed in the astragaloside group as compared with the lentivirus transfection group (P < 0.05). Given the above findings, CD40-silenced EPCs transplantation is more effective and durable than the conventional transplantation in the treatment of pulmonary hypertension, and moreover, astragaloside can enhance the therapeutic effect.

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: Hypertension, Pulmonary, Endothelial Cells, Lentivirus Infections, CD40 Ligand, Astragalus membranaceus, Tissue Engineering

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