Volume 9 Issue 2
Mar.  2018
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Article Navigation >  ORGAN TRANSPLANTATION  > 2018  >  9(2): 103-109
Zhou Chaorong, Lyu Haijin, Sun Yao, et al. Effect of human umbilical cord mesenchymal stem cells on CD4+ T cells in liver after hepatic ischemia-reperfusion injury in mice[J]. ORGAN TRANSPLANTATION, 2018, 9(2): 103-109. doi: 10.3969/j.issn.1674-7445.2018.02.003
Citation: Zhou Chaorong, Lyu Haijin, Sun Yao, et al. Effect of human umbilical cord mesenchymal stem cells on CD4+ T cells in liver after hepatic ischemia-reperfusion injury in mice[J]. ORGAN TRANSPLANTATION, 2018, 9(2): 103-109. doi: 10.3969/j.issn.1674-7445.2018.02.003
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Effect of human umbilical cord mesenchymal stem cells on CD4+ T cells in liver after hepatic ischemia-reperfusion injury in mice

doi: 10.3969/j.issn.1674-7445.2018.02.003

  • Surgical Intensive Care Unit, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China

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  • Corresponding author: Yi Huimin, Email:ylhmin@hotmail.com
  • Received Date: 2017-12-20
    Available Online: 2021-01-19
  • Publish Date: 2018-03-15
    Abstract
  •   Objective  To investigate the effect of human umbilical cord mesenchymal stem cells (HUC-MSCs) on CD4+ T cells in liver after hepatic ischemia-reperfusion injury (HIRI) in mice.  Methods  Two hundred and twentyfive mice were randomly divided into sham group, control group and MSC group, with 75 mice in each group. HIRI model mice were used in MSC group and control group. HUC-MSCs were injected in MSC group through inferior vena cava. Normal saline was injected in control group through inferior vena cava. Only laparotomy and abdominal closure were performed in sham group without blood vessel clipping. At 6, 12 and 24 h after operation, 15 mice of each group were randomly selected to sample eyeball blood and liver tissues, and the 30 mice left in each group were used to extract intrahepatic mononuclear cells. The number of intrahepatic mononuclear cells, percentage, number and positive rate of CD4+ T cells in the mice of various groups at different time points were compared. The content of interleukin (IL)-17 in serum and liver tissue as well as expression levels of costimulatory molecules B7-1 and B7-2 messenger RNA (mRNA) in liver tissues of the mice at different time points were compared.  Results  At 12 and 24 h after operation, the number of intrahepatic mononuclear cells of control group was significantly higher than that of sham group, while the number of intrahepatic mononuclear cells of MSC group was significantly lower than that of control group (P < 0.01-0.05). At 6, 12 and 24 h after operation, the percentage, number and positive rate of CD4+T cells of control group were significantly higher than those of sham group (all P < 0.01), while the percentage of CD4+T cells of MSC group was significantly lower than that of control group (P < 0.01-0.05). At 12 and 24 h after operation, the number and positive rate of CD4+ T cells of MSC group were significantly lower than those of control group (P < 0.01-0.05). At 6, 12 and 24 h after operation, the IL-17 contents in serum and liver tissues of control group were higher than those of sham group (all P < 0.01), while the IL-17 contents in serum and liver tissues of MSC group were lower than those of control group (all P < 0.01). At 6 h after operation, the mRNA expression level of B7-2 of control group was higher than that of sham group (P < 0.05). At 12 and 24 h after operation, the mRNA expression levels of B7-1 and B7-2 of control group were higher than those of sham group (all P < 0.01), while the mRNA expression levels of B7-1 and B7-2 of MSC group were lower than those of control group (all P < 0.01).  Conclusions  HUC-MSCs inhibits the number of CD4+T cells and the secretion of IL-17 in liver after HIRI, as well as decreases the number of intrahepatic mononuclear cells and the mRNA expression of B7-1 and B7-2, thereby alleviating HIRI.

     

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