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中华细胞与干细胞杂志(电子版) ›› 2017, Vol. 07 ›› Issue (02) : 87 -92. doi: 10.3877/cma.j.issn.2095-1221.2017.02.005

所属专题: 文献

论著

人脐带间充质干细胞对小鼠实验性溃疡性结肠炎的疗效
翟俊山1, 李方1, 孙亚梅1, 宋久刚1, 吴凯1, 王艳梅1, 张林1, 姚怡1, 李楠1,()   
  1. 1. 100091 北京,解放军第309医院消化科
  • 收稿日期:2016-10-05 出版日期:2017-04-01
  • 通信作者: 李楠
  • 基金资助:
    北京市自然科学基金(13G30191)

Curative effect of human umbilical cord mesenchymal stem cells on ulcerative colitis mice

Junshan Zhai1, Fang Li1, Yamei Sun1, Jiugang Song1, Kai Wu1, Yanmei Wang1, Lin Zhang1, Yi Yao1, Nan Li1,()   

  1. 1. Department of Gastroenterology, the 309th Hospital of Chinese People's Liberation Army, Beijing 100091, China
  • Received:2016-10-05 Published:2017-04-01
  • Corresponding author: Nan Li
  • About author:
    Corresponding author: Li Nan, Email:
引用本文:

翟俊山, 李方, 孙亚梅, 宋久刚, 吴凯, 王艳梅, 张林, 姚怡, 李楠. 人脐带间充质干细胞对小鼠实验性溃疡性结肠炎的疗效[J]. 中华细胞与干细胞杂志(电子版), 2017, 07(02): 87-92.

Junshan Zhai, Fang Li, Yamei Sun, Jiugang Song, Kai Wu, Yanmei Wang, Lin Zhang, Yi Yao, Nan Li. Curative effect of human umbilical cord mesenchymal stem cells on ulcerative colitis mice[J]. Chinese Journal of Cell and Stem Cell(Electronic Edition), 2017, 07(02): 87-92.

目的

探讨人脐带间充质干细胞移植术对溃疡性结肠炎(UC)小鼠的疗效,以及对血清中肿瘤坏死因子α(TNF-α)、白细胞介素-8(IL-8)水平的影响。

方法

选用雄性小鼠48只,完全随机分为正常对照组、模型对照组、脐带间充质干细胞(hUC-MSCs)治疗组,每组16只。模型对照组与hUC-MSCs治疗组通过口服5﹪葡聚糖硫酸钠诱导UC模型。对hUC-MSCs治疗组小鼠经尾静脉注射脐带间充质干细胞。观察各组疾病活动指数评分;采用酶联免疫吸附(ELISA)法测量各组小鼠血清中TNF-α、IL-8的表达水平,各组数据两组比较采用t检验,多组比较使用重复测量资料的方差分析对结果进行统计分析。

结果

模型对照组与hUC-MSCs治疗组DAI评分从第2天开始上升,直至实验结束分别为8.72±0.71、4.01±0.35均高于正常对照组0.21±0.20,且差异有统计学意义(F = 1 300.66,P < 0.01);模型对照组与hUC-MSCs治疗组比较,在造模期间及治疗的第4天DAI评分分别为7.95±0.71、8.01±0.73,差异无统计学意义(t =-?0.24,P = 0.08),在治疗的第5天hUC-MSCs治疗组DAI评分开始下降为7.23±0.82,且与模型对照组8.01±0.81相比,差异有统计学意义(t =-?2.71,P = 0.01)。造模第7天,模型对照组与hUC-MSCs治疗组两组TNF-α分别为(363.32±15.84)pg/ml、(375.52±16.21)pg/ml,均高于空白对照组(112.14±11.23)pg/ml(F = 624.12,P < 0.01);模型对照组与hUC-MSCs治疗组两组IL-8分别为(65.32±10.12)pg/ml、(57.21±8.71)pg/ml均高于空白对照组(25.02±7.81)pg/ml(F = 34.29,P < 0.01),但两组比较差异无统计学意义(P > 0.05);第2次干细胞注射7 d后即实验结束时,模型对照组与hUC-MSCs治疗组TNF-α分别为(453.23±15.63)pg/ml、(276.84±17.91)pg/ml,仍高于空白对照组(134.32±12.31)pg/ml(F = 642.41,P < 0.01);模型对照组与hUC-MSCs治疗组两组IL-8分别为(75.23±6.72)pg/ml、(39.12±4.42)pg/ml仍高于空白对照组(27.12±5.91)pg/ml(F = 113.90,P < 0.01),但hUC-MSCs治疗组水平较造模结束时有所下降,低于模型对照组(P < 0.05)。

结论

间充质干细胞移植术对UC小鼠有良好的治疗作用,且能降低血清中TNF-α、IL-8的水平。

Objective

To investigate human umbilical cord derived mesenchymal stem cells (hUC-MSCs) transplantation for the treatment of ulcerative colitis (UC) in mice, and evaluated the effect of hUC-MSCs on tumor necrosis factor-alpha (TNF-α) and interleukin-8 (IL-8) production.

Methods

Forty eight male adult mice were randomly divided into three groups, namely normal control group, model control group and hUC-MSC group, with 16 mice in each group. UC was induced by drinking 5﹪dextran sulfate sodium (DSS) . The hUC-MSC group was treated by i.v. hUC-MSCs cells through tail vein. The disease activity index (DAI) was evaluated and TNF-αand IL-8 were detected by ELISA.t-test was used to determine statistical significance between the two groups, and ANOVA was used among the three groups.

Results

The DAI began to rise at the second day for the model control group and the hUC-MSCs group, which were (8.72±0.71) and (4.01±0.35) respectively at the end of the experiment, both higher than the normal control group (0.21±0.20,F= 1 300.66,P = 0.000) . The DAI were not different between the model control group and the hUC-MSCs group at the 4 days after induction of UC (7.95±0.71vs8.01±0.73,t=-0.236,P= 0.08153) . The DAI of the hUC-MSCs group began to decrease at the 5th treatment day and was lower than that of the model control group (7.23±0.82vs8.01±0.81,t=-2.707,P= 0.0111) . TNF-αlevels of the model control group (363.32±15.84) pg/ml and the hUC-MSCs group (375.52±16.21) pg/ml were similar (P> 0.05) , but higher than that of the normal group (112.14±11.23) pg/ml at the 7th day (F= 624.12,P= 0.000) ; IL-8 level of the model control group (65.32±10.12) pg/ml and the hUC-MSCs group (57.21±8.71) pg/ml were similar (P> 0.05) , but higher than that of the normal group (25.02±7.81) pg/ml at the 7th day (F= 34.29,P= 0.000) . Seven days after the second injection of stem cells (the end of experiment) , TNF-αlevel of the model control group (453.23±15.63) pg/ml and the hUC-MSCs group (276.84±17.91) pg/ml were higher than that of the normal group[ (134.32±12.31) pg/ml,F= 642.41,P= 0.000]; IL-8 level of the model control group (75.23±6.72) pg/ml and the hUC-MSCs group (39.12±4.42) pg/ml were higher than that of the normal group[ (27.12±5.91) pg/ml,F= 113.90,P= 0.000], but TNF-αand IL-8 levels of the hUC-MSCs group were lower than that of the model group (P< 0.05) .

Conclusion

hUC-MSCs may alleviate UC in DSS-treated mice via decreasing production of TNF-αand IL-8.

表1 DAI评分标准
图1 普通光显微镜下观察人脐带间充质干细胞形态(×100)
表2 hUC-MSCs移植术后各组小鼠DAI评分表(n = 16, ± s
表3 造模第7天及实验结束时各组小鼠细胞因子TNF-α、IL-8与CRP水平( ± s
图2 光学显微镜下观察各实验组小鼠结肠组织病理照片(HE染色,×200)
图3 荧光显微镜下观察hUC-MSCs在结肠定位情况(PKH26染色)
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