中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (45): 7342-7349.doi: 10.3969/j.issn.2095-4344.2015.45.023

• 干细胞移植 stem cell transplantation • 上一篇    下一篇

羊水干细胞诱导肾移植免疫耐受及对氧化应激的影响

邓春阳1,冯建勋2,张海英2,陈庭芳2,李 静3   

  1. 1浦东新区书院社区卫生服务中心,上海市  201304;2上海市第六人民医院东院肾脏风湿科,上海市  201306;3新疆医科大学附属第一医院,新疆维吾尔自治区乌鲁木齐市  830000
  • 收稿日期:2015-09-11 出版日期:2015-11-05 发布日期:2015-11-05
  • 通讯作者: 冯建勋,博士,博士后,主任医师,上海市第六人民医院东院肾脏风湿科,上海市 201306
  • 作者简介:邓春阳,女,1982年生,重庆市人,汉族,2005年石河子大学毕业,主治医师,主要从事慢性肾脏病方面的研究。
  • 基金资助:

    新疆维吾尔自治区自然科学基金项目(2009211A23)

Effects of amniotic fluid stem cell transplantation on immune tolerance and oxidative stress in kidney transplantation

Deng Chun-yang1, Feng Jian-xun2, Zhang Hai-ying2, Chen Ting-fang2, Li Jing3   

  1. 1Health Service Center of the Academy Community, Pudong New Area, Shanghai 201304, China; 2Department of Nephrology, Eastern Branch, Sixth People’ s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 201306, China; 3First Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China
  • Received:2015-09-11 Online:2015-11-05 Published:2015-11-05
  • Contact: Feng Jian-xun, M.D., Chief physician, Department of Nephrology, Eastern Branch, Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 201306, China
  • About author:Deng Chun-yang, Attending physician, Health Service Center of the Academy Community, Pudong New Area, Shanghai 201304, China
  • Supported by:

    the Natural Science Foundation of Xinjiang Uygur Autonomous Region, No. 2009211A23

摘要:

背景:干细胞在器官移植中诱导免疫耐受、延长移植物的存活时间、减轻排斥反应的作用已成为国内外众多学者研究的热点。
目的:以供体羊水干细胞诱导异基因大鼠肾脏移植免疫耐受,探讨免疫耐受的形成机制。
方法:分离培养Wistar大鼠羊水干细胞。选择雄性近交系Wistar大鼠和SD大鼠分别作为肾移植的供、受体,共分4组:假手术组(健康纯系雄性SD大鼠)、同系肾移植组(健康纯系雄性SD大鼠作供受体)、对照组(异系移植组加生理盐水)和实验组(异系移植组加羊水干细胞输注)。建立肾移植模型后,实验组由阴茎静脉缓慢推注3×109 L-1羊水干细胞 1 mL,对照组则缓慢推注生理盐水1 mL。术后第5天检测血清中肌酐、尿素氮、白细胞介素2、干扰素γ水平及氧化应激指标,流式细胞术检测外周血CD4和CD8淋巴细胞百分比,观察移植肾的病理变化。
结果与结论:实验组大鼠血清中尿素氮、肌酐、白细胞介素2、干扰素γ及氧化应激指标和尿蛋白定量、外周血淋巴细胞亚群CD4+,CD8+百分比及CD4+/CD8+比值显著低于对照组,而肌酐清除率则显著高于对照组,肾脏病理损害程度明显轻于对照组。结果显示羊水干细胞可以诱导大鼠肾移植免疫耐受,同时还可以抑制氧化应激水平,改善肾功能,减轻肾损害。
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

关键词: 干细胞, 移植, 羊水干细胞, 肾移植, 大鼠, 免疫耐受, 氧化应激, 新疆维吾尔自治区自然科学基金

Abstract:

BACKGROUND: Stem cells can induce immune tolerance, prolong graft survival time and reduce rejection in organ transplantation, which have become a hot research.
OBJECTIVE: To induce immune tolerance to allogenic kidney transplantation with amniotic fluid stem cells in recipient rats and to explore the mechanism underlying immune tolerance.
METHODS: Amniotic fluid stem cells were isolated from Wistar rats. Two inbred male rat strains, Wistar rats and Sprague-Dawley rats, were selected as donors and recipients of kidney transplantation. The rat models of renal orthotopic transplantation were divided into the following four groups: a sham-operated group (n=10, Sprague-Dawley rats); an isograft group (n=10, Sprague-Dawley to Sprague-Dawley rats); a control group (n=10, Wistar to Sprague-Dawley rats, treated with 1 mL saline); and an experimental group (n=10, Wistar to Sprague-Dawley rats, treated with 1 mL of 3×106/L amniotic fluid stem cells). Serum levels of creatinine, urea 
nitrogen, interleukin-2, interferon-γ, parameters of oxidative stress were detected at 5 days after operation. Flow cytometry was employed to determine the percentage of CD4+ and CD8+ lymphocytes in the peripheral blood. Kidney transplants were observed pathologically.
RESULTS AND CONCLUSION: Compared with the control group, the levels of creatinine, urea nitrogen, interleukin-2, interferon-γ, parameters of oxidative stress and proteinuria were lower in the experimental group (P < 0.05). Percentages of CD4+, CD8+ and CD4+/CD8+ ratio were also significantly lower in the experimental group than the control group. However, the rate of cretinemia clearance in the experimental group was significantly higher than that in the control group (P < 0.05). Furthermore, the degree of kidney injury in the experimental group was significantly lower than that in the control group. Our findings demonstrate that the amniotic fluid stem cell transplantation can induce immune tolerance, extenuate oxidative stress, attenuate pathological damage to the kidney transplant and preserve kidney function from acute rejection in rats undergoing kidney transplantation.
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

Key words: Stem Cells, Amniotic Fluid, Kidney Transplantation, Immune Tolerance, Tissue Engineering