中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (17): 2665-2671.doi: 10.3969/j.issn.2095-4344.2017.17.007

• 脐带脐血干细胞 umbilical cord blood stem cells • 上一篇    下一篇

人脐带间充质干细胞应用于肝移植患者的观察

陈  榕1,江  涛2,杨爱珍3,张冬华2,王  轩1   

  1. 1安徽医科大学解放军八一临床学院全军肿瘤中心肿瘤外科,江苏省南京市  210000;南京中医药大学附属八一医院,2全军肿瘤中心肿瘤外科,3中心实验科,江苏省南京市  210000
  • 修回日期:2017-05-03 出版日期:2017-06-18 发布日期:2017-06-29
  • 通讯作者: 王轩,博士,教授,主任医师,安徽医科大学解放军八一临床学院全军肿瘤中心肿瘤外科,江苏省南京市 210000
  • 作者简介:陈榕,男,1990年生,福建省福州市人,汉族,在读硕士,主要从事肝脏移植的临床和基础研究。
  • 基金资助:

    南京军区医学科技创新重点资助项目(14ZX07)

Clinical application of human umbilical cord-derived mesenchymal stem cells in liver transplantation patients

Chen Rong1, Jiang Tao2, Yang Ai-zhen3, Zhang Dong-hua2, Wang Xuan1   

  1. 1Department of Oncological Surgery, Military Oncology Center, PLA 81st Clinical College, Anhui Medical University, Nanjing 210000, Jiangsu Province, China; 2Department of Oncological Surgery, Military Oncology Center, PLA 81st Hospital, Nanjing University of Chinese Medicine, Nanjing 210000, Jiangsu Province, China; 3Clinical Laboratory, PLA 81st Hospital, Nanjing University of Chinese Medicine, Nanjing 210000, Jiangsu Province, China
  • Revised:2017-05-03 Online:2017-06-18 Published:2017-06-29
  • Contact: Wang Xuan, M.D., Professor, Chief physician, Department of Oncological Surgery, Military Oncology Center, PLA 81st Clinical College, Anhui Medical University, Nanjing 210000, Jiangsu Province, China
  • About author:Chen Rong, Studying for master’s degree, Department of Oncological Surgery, Military Oncology Center, PLA 81st Clinical College, Anhui Medical University, Nanjing 210000, Jiangsu Province, China
  • Supported by:

    the Key Medical Innovation Project of Nanjing Military Region of Chinese PLA, No. 14ZX07

摘要:

文章快速阅读:

 

文题释义:
移植物免疫耐受:
临床意义的移植物免疫耐受多指所移植的细胞、组织或者器官能在不使用免疫抑制剂的情况下,长期的存活和维持稳定的移植物功能。真正的耐受目前仅仅是一种理想状态,仅能达到操作耐受或者接近耐受。
调节性T细胞(Treg):机体发挥免疫调节功能的关键性调节细胞,具有免疫抑制特性,在体内的主要作用是调节机体免疫平衡,防止免疫反应无限制扩大及抑制自身免疫反应的发生。

 

摘要
背景:近年来间充质干细胞的免疫调节作用可被应用于诱导机体免疫耐受研究。
目的:评估脐带间充质干细胞应用于肝移植患者的安全性和可行性。

方法:培养人脐带间充质干细胞并进行鉴定。经医学伦理委员会同意后,将总计50例患者经1∶1的比例按入组时间随机分入试验组和对照组,每组25例。试验组分别在术中门静脉灌注及术后第3天给予颈内静脉输注脐带间充质干细胞,剂量为1×106/kg(制备成50 mL的细胞悬液)。两组患者均采用标准免疫抑制方案。术前,术后第3,7天,术后第1,2,3,6,12个月检测血生化、免疫功能指标,统计急、慢性排斥反应发生率,感染发生率,移植相关并发症发生率。
结果与结论:①与对照组相比,术后第3,7天试验组外周血的CD4+CD25+(调节性T细胞)细胞比例高于对照组,差异有显著性意义(P < 0.05),CD4+(辅助性/诱导性T细胞)细胞比例及CD4+/CD8+ T淋巴细胞的比值低于对照组,差异有显著性意义(P < 0.05);②与对照组相比,试验组谷丙转氨酶、总胆红素水平差异无显著性意义(P > 0.05);③试验组术后肝功能异常事件的发生率明显低于对照组,差异有显著性意义(P < 0.05);④两组移植后相关并发症的发生率、感染发生率差异无显著性意义(P > 0.05);⑤以上结果提示,肝移植术后静脉输注脐带间充质干细胞安全可行,早期可促进CD4+CD25+(调节性T细胞)的增殖和活化,降低CD4+(辅助性/诱导性T细胞)比例及CD4+/CD8+ T淋巴细胞的比值,进而改善肝移植受者免疫状态。

 

 

关键词: 干细胞, 脐带脐血干细胞, 脐带间充质干细胞, 肝移植, CD4+CD25+调节性T细胞, 免疫功能, 免疫耐受

Abstract:

BACKGROUND: In recent years, the immunoregulatory effects of mesenchymal stem cells (MSCs) can be used to induce immune tolerance.

OBJECTIVE: To evaluate the safety and feasibility of human umbilical cord-derived MSCs (hUC-MSCs) in liver transplantation patients.
METHODS: hUC-MSCs were cultured and identified. After approved by the Medical Ethics Committee, a total of 50 patients were randomly divided into experimental group and control group according to the proportion of 1:1. In the experimental group, hUC-MSCs were perfused by the portal vein during the operation and infused into the jugular vein on the 3rd day after the operation. The injection dose was 1×106/kg (prepared as 50 mL of cell suspension). Both groups received standard immunosuppressive regimens. Blood biochemistry and immune function indicators were detected preoperatively and at postoperative days 3, 7, months 1, 2, 3, 6, 12. Acute and chronic rejection rates, incidence of infection, and incidence of transplantation-related complications were recorded.

RESULTS AND CONCLUSION: (1) At 3 and 7 days after the operation, the percentage of peripheral blood CD4+CD25+ cells (regulatory T cells) in the experimental group was significantly higher than that in the control group (P < 0.05). The percentage of CD4+ cells (helper/inducer T cells) and ratio of CD4+/CD8+ T lymphocytes were significantly lower in the experimental group than the control group (P < 0.05). (2) There was no significant difference in postoperative alanine aminotransferase and total bilirubin levels between the two groups (P > 0.05). (3) The incidence of abnormal liver function in the experimental group was significantly lower than that in the control group (P < 0.05). (4) The incidence of transplantation-related complications and the rate of infection showed no significant difference between the two groups (P > 0.05). Overall, the intravenous infusion of hUC-MSCs is safe and feasible in liver transplantation patients, which in early stage can promote the the proliferation and activation of CD4+CD25+ cells (regulatory T cells), reduce the percentage of CD4+ cells (helper/inducer T cells) and lower the ratio of CD4+/CD8+ T cells, thereby improving the immune status in liver transplantation patients.

 

 

Key words: Liver Transplantation, Umbilical Cord, Mesenchymal Stem Cell Transplantation, Immune Tolerance, Tissue Engineering

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