中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (9): 1395-1401.doi: 10.3969/j.issn.2095-4344.0470

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

两种状态脐血间充质干细胞移植对脑梗死大鼠神经功能恢复的对比研究

韩小改,李建斌,单 泓,别立莉,王娇杰,刘 英,戚 正   

  1. 河南省红十字血液中心成分室,河南省郑州市 450012
  • 修回日期:2017-10-24 出版日期:2018-03-28 发布日期:2018-04-03
  • 通讯作者: 李建斌,硕士,主任医师,河南省红十字血液中心,河南省郑州市 450012
  • 作者简介:韩小改,女,1981年生,河南省南阳市人,汉族,2008年新乡医学院毕业,硕士,主治医师,主要从事间充质干细胞与中枢神经系统损伤疾病研究。
  • 基金资助:

    河南省科技攻关项目(201204120)

Transplantation of umbilical cord blood mesenchymal stem cells at two states: comparison of neurological function recovery in cerebral infarction rats

Han Xiao-gai, Li Jian-bin, Shan Hong, Bie Li-li, Wang Jiao-jie, Liu Ying, Qi Zheng   

  1. Department of Blood Composition, Henan Red Cross Blood Center, Zhengzhou 450012, Henan Province, China
  • Revised:2017-10-24 Online:2018-03-28 Published:2018-04-03
  • Contact: Li Jian-bin, Master, Chief physician, Department of Blood Composition, Henan Red Cross Blood Center, Zhengzhou 450012, Henan Province, China
  • About author:Han Xiao-gai, Master, Attending physician, Department of Blood Composition, Henan Red Cross Blood Center, Zhengzhou 450012, Henan Province, China
  • Supported by:

    the Science and Technology Tackle Key Project of Henan Province, No. 201204120

摘要:

文章快速阅读:

文题释义:
间充质干细胞:
作为一种多潜能干细胞,主要存在于脐血和骨髓中,在一定的条件下可分化为血管内皮祖细胞、成骨细胞、软骨细胞、脂肪细胞、骨骼肌细胞、神经细胞、肝细胞、心肌细胞等,其“局部专一诱导性分化”现象为成体干细胞开辟了新的临床应用适应证。
局部专一诱导性分化:成体干细胞到达受损伤的部位后,在微环境下会使干细胞向损伤组织修复所需的组织细胞分化,从而促进损伤组织的修复,这种现象被称为局部专一诱导性分化。实验正是利用了间充质干细胞的这一特性,将脐血间充质干细胞输入脑梗大鼠体内,使大鼠脑梗部位炎症反应减轻,血供增加,受损伤细胞恢复功能,从而改善神经功能。

 

摘要
背景:
脐血间充质干细胞对缺血缺氧引起的神经细胞损伤具有修复作用,而原代分离的和经过诱导分化的细胞,何种状态的治疗效果好未有定论。
目的:比较原代分离的和经过培养诱导分化的2种状态脐血间充质干细胞对大鼠脑梗死模型治疗效果。
方法:①取足月分娩的胎儿脐血,经四联袋梯度密度离心法分离脐血间充质干细胞;②通过含有碱性成纤维生长因子的培养基诱导分化脐血间充质干细胞;③将60只大鼠随机等分为4组:假手术组、模型组、原代细胞治疗组及诱导分化细胞治疗组,后3组建立脑梗死模型。原代细胞治疗组及诱导分化细胞治疗组分别在造模后7 d通过尾静脉注射原代分离的和经过培养诱导分化的2种状态脐血间充质干细胞。
结果与结论:移植原代分离的和经过培养诱导分化的2种状态脐血间充质干细胞的脑梗死模型大鼠平衡、行走、空间定位和学习记忆能力得到明显改善,且其中与原代分离的脐血间充质干细胞治疗的大鼠相比,经诱导分化的脐血间充质干细胞治疗的大鼠脑梗死体积接近,脑组织病理损伤改善更为明显,脑组织中CD34、Ki-67阳性细胞数量较高,神经胶质纤维酸性蛋白阳性细胞数量较低,脑组织中炎症因子白细胞介素1β和肿瘤坏死因子β表达减少,而白细胞介素6表达水平接近。说明经过培养诱导分化的脐血间充质干细胞对脑梗死模型大鼠神经功能的治疗效果更佳。

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: 0000-0002-2371-3594(李建斌)

关键词: 干细胞, 间充质干细胞, 脑梗死, 水迷宫, 平衡试验, 细胞治疗, 脐血间充质干细胞, 脑梗死模型

Abstract:

BACKGROUND: Human umbilical cord blood mesenchymal stem cells (hUC-MSCs) can repair the injury of nerve cells caused by ischemia and hypoxia, but which state of cells has a better therapeutic efficacy, primary isolation or induced differentiation is not yet known.
OBJECTIVE: To compare the therapeutic effects of hUC-MSCs primary cultured and differentiated in a rat model of cerebral infarction.
METHODS: After full-term delivery, fetal umbilical cord blood samples were obtained using quadruple bags by means of density gradient centrifugation. hUC-MSCS were induced in the medium containing basic fibroblast growth factor. Sixty rats were equivalently randomized into four groups: sham, model, primary culture and induced differentiation groups. Animal models of cerebral infarction were made in the rats in the latter three groups. Model rats in the primary culture and induced differentiation groups were subjected to tail vein transplantation of hUC-MSCs that were primary cultured or induced to differentiate in vitro at 7 days after modeling. 
RESULTS AND CONCLUSION: A marked improvement in balance, walking, spatial orientation, and learning and memory abilities was found in the rats after transplantation of hUC-MSCs that were primary cultured or induced to differentiate. Moreover, compared with the primary culture group, a significant improvement was found in the induced differentiation group, including improved pathological injury of the brain, higher expression of CD34 and Ki-67, lower expression of glial fibrillary acidic protein, lower expression of interleukin 1β and tumor necrosis factor β. Compared with the primary culture group, similar infarction size and expression of interleukin-6 were also found in the induced differentiation group. These findings indicate that hUC-MSCs with induced differentiation exhibit better therapeutic outcomes in the recovery of neurological function of cerebral infarction rats. 

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: Cord Blood Stem Cell Transplantation, Infarction, Middle Cerebral Artery, Tissue Engineering

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