中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (14): 1981-1988.doi: 10.3969/j.issn.2095-4344.2016.14.001

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

白细胞介素6受体单克隆抗体与骨髓间充质干细胞可减少急性脊髓损伤神经元的凋亡

任义行 1,孟宪勇 2,胡长波 2,杨新明 2   

  1. 1河北北方学院研究生院,河北省张家口市  075000;2河北北方学院附属第一医院骨科,河北省张家口市  075000
  • 收稿日期:2016-02-15 出版日期:2016-04-01 发布日期:2016-04-01
  • 通讯作者: 杨新明,教授,硕士生导师,河北北方学院附属第一医院骨科,河北省张家口市 075000
  • 作者简介:任义行,男,1989年生,河北省保定市人,汉族,河北北方学院在读硕士,主要从事创伤与组织修复研究。
  • 基金资助:
    河北省卫生厅二〇一一年医学科学研究重点项目计划(20110176),课题名称:BMSC体外分化移植治疗脊髓损伤临床与基础研究;2013年度河北北方学院创新人才培育基金项目(CXRC1322),课题名称:BMSC体外分化移植对脊髓损伤修复影响的实验研究
     

Combined use of interleukin-6 receptor monoclonal antibody and bone marrow mesenchymal stem cells reduces neuronal apoptosis after acute spine cord injury

Ren Yi-xing1, Meng Xian-yong2, Hu Chang-bo2, Yang Xin-ming2   

  1. 1Graduate School of Hebei North University, Zhangjiakou 075000, Hebei Province, China; 2Department of Orthopedics, First Affiliated Hospital of Hebei North University, Zhangjiakou 075000, Hebei Province, China
  • Received:2016-02-15 Online:2016-04-01 Published:2016-04-01
  • Contact: Yang Xin-ming, Professor, Master’s supervisor, Department of Orthopedics, First Affiliated Hospital of Hebei North University, Zhangjiakou 075000, Hebei Province, China
  • About author:Ren Yi-xing, Studying for master’s degree, Graduate School of Hebei North University, Zhangjiakou 075000, Hebei Province, China
  • Supported by:

    the Medical Science Research Project of Hebei Health Department in 2011, No. 20110176; the Innovative Talent Culture Fund of Hebei North University in 2013, No. CXRC1322

摘要:

文章快速阅读:

文题释义:
白细胞介素6单克隆抗体:通过特异性结合白细胞介素6的α支链,抑制脊髓损伤中的星形胶质细胞聚集化和增殖,减少星形胶质细胞分泌前列腺素E等,进而减轻脊髓损伤因组织水肿、缺血引起的炎症反应,表现为减少脊髓空洞形成,保护尚存神经细胞,治疗急性脊髓损伤。
凋亡:在特定信号诱导下,细胞死亡级联反应触发引起的细胞程序性死亡,在急性脊髓损伤中,因组织缺血、水肿,局部电解质紊乱,大量小胶质细胞聚集,释放细胞毒性因子,如白细胞介素6、肿瘤坏死因子等,还有损伤后产生的氧自由基、一氧化氮,导致神经细胞脱髓鞘,凋亡坏死。

背景:研究提示白细胞介素6是急性脊髓损伤中导致细胞凋亡的重要因素。
目的:观察白细胞介素6受体单克隆抗体联合骨髓间充质干细胞治疗大鼠急性脊髓损伤的效果。
方法:将30只健康SD大鼠随机分为5组,假手术组、急性脊髓损伤组、白细胞介素6受体单克隆抗体移植组、骨髓间充质干细胞移植组、白细胞介素6受体单克隆抗体+骨髓间充质干细胞联合移植组(简称联合移植组),每组6只。假手术组仅暴露但并不打击脊髓,其余大鼠采用改良Allen’s法制备急性脊髓损伤大鼠模型。术后2 d各治疗组大鼠损伤部位用局部注射法进行治疗。治疗前1 d及治疗后1,3,7,14,28 d分别采用改良BBB评分法及Tarlov评分法,对大鼠后肢进行运动能力测试。治疗28 d各组大鼠取材行Tunel法检测脊髓细胞凋亡情况。
结果与结论:①与假手术组相比,其他各组BBB评分及改良Tarlov评分均显著降低(P < 0.05)。②治疗14 d后,白细胞介素6受体单克隆抗体移植组、骨髓间充质干细胞移植组BBB评分及Tarlov评分显著高于急性脊髓损伤组(P < 0.05),治疗7 d后,联合移植组BBB评分及改良Tarlov评分显著高于急性脊髓损伤组(P < 0.05)。③与骨髓间充质干细胞移植组相比,治疗14 d后联合移植组BBB评分及改良Tarlov评分显著升高(P < 0.05)。④与假手术组相比,其他各组细胞凋亡数显著增加(P < 0.05);与急性脊髓损伤组相比,各治疗组细胞凋亡数显著减少(P < 0.05);与骨髓间充质干细胞移植组相比,联合移植组细胞凋亡数显著减少(P < 0.05)。⑤结果表明白细胞介素6受体单克隆抗体联合骨髓间充质干细胞治疗脊髓损伤优于单纯骨髓间充质干细胞治疗。白细胞介素6受体单克隆抗体减少了脊髓损伤引起的细胞凋亡,对于急性脊髓损伤的保护具有积极意义。

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: 0000-0003-4758-8035(杨新明)

关键词: 干细胞, 骨髓干细胞, 白细胞介素6单克隆抗体, 骨髓基质干细胞, 脊髓损伤, 炎症反应, 动物实验, 运动评分;次级损伤, 损伤修复, 移植, 细胞凋亡

Abstract:

 BACKGROUND: Studies have suggested that interleukin-6 is crucial for inducing cell apoptosis after acute spinal cord injury.
OBJECTIVE: To observe the effect of interleukin-6 receptor monoclonal antibody combined with bone marrow mesenchymal stem cells to treat acute spinal cord injury in rats.
METHODS: Thirty Sprague-Dawley rats were randomly divided into sham group, model group (spinal cord injury group), treatment group 1 (interleukin-6 receptor monoclonal antibody transplantation group), treatment group 2 (bone marrow mesenchymal stem cell transplantation group), treatment group 3 (bone marrow mesenchymal stem cell+interleukin-6 receptor monoclonal antibody group), with six rats in each group. In the sham group, the spinal cord was only exposed with no injury, and in the other four groups, rat models of acute spinal cord injury were made using modified Allen’s method. Local injection treatment was performed in all the groups at 28 days after modeling. Basso, Beattie and Bresnahan (BBB) scoring and improved Tarlov scoring were used at 1 day before treatment and 1, 3, 7, 14, 28 days after treatment to test the hindlimb function. At 28 days after treatment, TUNEL method was used to detect cell apoptosis in the spinal cord.
RESULTS AND CONCLUSION: Compared with the sham group, BBB scores and improved Tarlov scores were decreased significantly in the other four groups (P < 0.05). At 7 days after treatment, the BBB scores and improved Tarlov scores in the treatment group 3 were significantly higher than those in the model group (P < 0.05). At 14 days after treatment, the BBB scores and improved Tarlov scores in the treatment groups 1 and 2 were significantly higher than those in the model group (P < 0.05); compared with the treatment group 2, the BBB score and improved Tarlov score were significantly increased in the treatment group 3 (P < 0.05). Compared with the sham group, the number of apoptotic cells was significantly increased in the other four groups (P < 0.05); compared with the model group, the number of apoptotic cells was significantly decreased in the three treatment groups (P < 0.05); compared with the treatment group 2, the number of apoptotic cells was significantly lower in the treatment group 3 (P < 0.05). These findings indicate that the combined use of interleukin-6 receptor monoclonal antibody and bone marrow mesenchymal stem cell transplantation is better than bone marrow mesenchymal stem cell transplantation alone in the treatment of spinal cord injury, and interleukin-6 receptor monoclonal antibody reduces cell apoptosis in spinal cord injury, which is of positive significance for preventing against acute spinal cord injury.

Key words: Spinal Cord Injuries, Bone Marrow, Mesenchymal Stem Cell Transplantation, Interleukin-6, Antibodies, Monoclonal, Apoptosis, Tissue Engineering