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中华神经创伤外科电子杂志 ›› 2017, Vol. 03 ›› Issue (06) : 355 -359. doi: 10.3877/cma.j.issn.2095-9141.2017.06.008

所属专题: 文献

基础研究

诱导型神经干细胞对颅脑创伤后免疫细胞的影响
高谋1, 徐如祥1,(), 王海峰2, 许民辉1, 董勤1, 姚慧1, 张岩1, 杨阳1, 党圆圆1, 张洪钿1, 杨志军1   
  1. 1. 100700 北京,陆军总医院附属八一脑科医院
    2. 130021 长春,吉林大学第一医院神经创伤外科
  • 收稿日期:2017-10-26 出版日期:2017-12-15
  • 通信作者: 徐如祥
  • 基金资助:
    国家自然科学基金(81671189); 全军"十三五"军事医学创新工程项目(16CXZ001)

Effects of induced neural stem cells on immune cells following traumatic brain injury

Mou Gao1, Ruxiang Xu1,(), Haifeng Wang2, Minhui Xu1, Qin Dong1, Hui Yao1, Yan Zhang1, Yang Yang1, Yuanyuan Dang1, Hongtian Zhang1, Zhijun Yang1   

  1. 1. Affiliated Bayi Brain Hospital, General Hospital of PLA Army, Beijing 100700, China
    2. Department of Neurotrauma, First Hospital of Jilin University, Changchun 130021, China
  • Received:2017-10-26 Published:2017-12-15
  • Corresponding author: Ruxiang Xu
  • About author:
    Corresponding author: Xu Ruxiang, Email:
引用本文:

高谋, 徐如祥, 王海峰, 许民辉, 董勤, 姚慧, 张岩, 杨阳, 党圆圆, 张洪钿, 杨志军. 诱导型神经干细胞对颅脑创伤后免疫细胞的影响[J]. 中华神经创伤外科电子杂志, 2017, 03(06): 355-359.

Mou Gao, Ruxiang Xu, Haifeng Wang, Minhui Xu, Qin Dong, Hui Yao, Yan Zhang, Yang Yang, Yuanyuan Dang, Hongtian Zhang, Zhijun Yang. Effects of induced neural stem cells on immune cells following traumatic brain injury[J]. Chinese Journal of Neurotraumatic Surgery(Electronic Edition), 2017, 03(06): 355-359.

目的

研究诱导型神经干细胞(iNSCs)移植对颅脑创伤(TBI)后小胶质细胞活化状态和反应性星形胶质细胞增生的影响。

方法

采用自由落体脑打击装置制备C57BL/6小鼠TBI模型,将1×106个iNSCs移植到TBI小鼠脑内,于移植后7 d处死动物,取材进行形态学研究。用双重免疫荧光染色,分别观察iNSCs移植对TBI小鼠脑内ED1和Iba1抗体双阳性的小胶质细胞、GFAP抗体阳性星形胶质细胞以及NeuN抗体阳性神经元的影响。

结果

TBI后小鼠脑内可见大量ED1和Iba1抗体双阳性的小胶质细胞和GFAP抗体阳性的星形胶质细胞,而iNSCs移植物明显减少了ED1和Iba1抗体双阳性的小胶质细胞和GFAP抗体阳性的星形胶质细胞的数量,并且明显减轻了NeuN抗体阳性的神经元的凋亡。

结论

iNSCs移植物在TBI小鼠脑内,可调控小胶质细胞活化状态,抑制反应性星形胶质细胞增生,有利于神经元存活。

Objective

To study the effects of grafted induced neural stem cells (iNSCs) on microglia activation states and reactive astrogliosis following traumatic brain injury (TBI).

Methods

TBI models were established using a standardized weight-drop device. At 12 h after TBI, a total of 1×106 iNSCs were transplanted into the brains of TBI mice. On day 7 after TBI, animals were sacrificed for morphological analysis. Double-labeling experiments were utilized to determine the effects of iNSC grafts on ED1-and Iba1-positive microglia, GFAP-positive astrocytes and NeuN-positive neurons in the brains of TBI mice.

Results

Following TBI, we observed dramatic increases in the numbers of ED1- and Iba1-positive microglia and GFAP-positive astrocytes in the brains of TBI mice. However, grafted iNSCs significantly suppressed the numbers of ED1- and Iba1-positive microglia and GFAP-positive astrocytes in the brains of TBI mice. Additionally, iNSC grafts substantially reduced the levels of apoptotic NeuN-positive neurons in the brains of TBI mice.

Conclusion

INSC grafts can modulate microglia activation states and inhibit reactive astrogliosis to promote neuronal survival post-TBI.

图1 诱导型神经干细胞移植物减少颅脑损伤小鼠脑内ED1和Iba1抗体双阳性的小胶质细胞数量(×400)
表1 颅脑损伤后7 d,各组小鼠脑内特异性抗体标记细胞的百分率(±s,%)
图2 诱导型神经干细胞移植物减少颅脑损伤小鼠脑内GFAP抗体阳性星形胶质细胞数量(×400)
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