中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (17): 2696-2702.doi: 10.3969/j.issn.2095-4344.1708

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

脂肪来源间充质干细胞移植干预系统性红斑狼疮模型小鼠的免疫功能

叶 玲1, 2,朱 静2,何成松1   

  1. 1西南医科大学附属医院风湿免疫科,四川省泸州市 646000;2四川省医学科学院•四川省人民医院风湿免疫科,四川省成都市 610000
  • 修回日期:2019-01-17 出版日期:2019-06-18 发布日期:2019-06-18
  • 通讯作者: 何成松,硕士,教授、硕士生导师,西南医科大学附属医院风湿免疫科,四川省泸州市 646000
  • 作者简介:叶玲,女,1987年生,河南省开封市人,汉族,2010年成都医学院毕业,主治医师,主要从事风湿免疫方面的研究。

Intervention with autologous adipose-derived mesenchymal stem cells for immune function in mice with systemic lupus erythematosus

Ye Ling1, 2, Zhu Jing2, He Chengsong1   

  1. 1Department of Rheumatology and Immunology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China; 2Department of Rheumatology and Immunology, Sichuan Provincial People’s Hospital, Sichuan Academy of Medical Sciences, Chengdu 610000, Sichuan Province, China
  • Revised:2019-01-17 Online:2019-06-18 Published:2019-06-18
  • Contact: He Chengsong, Master, Professor, Master’s supervisor, Department of Rheumatology and Immunology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Ye Ling, Attending physician, Department of Rheumatology and Immunology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan Province, China; Department of Rheumatology and Immunology, Sichuan Provincial People’s Hospital, Sichuan Academy of Medical Sciences, Chengdu 610000, Sichuan Province, China

摘要:

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文题释义:
间充质干细胞的免疫调节:
间充质干细胞具有免疫调节的生物学特性,通过可溶性介质或直接与细胞接触发挥免疫调节作用。由于这些免疫调节特性,间充质干细胞治疗的安全性和临床疗效已经在许多自身免疫性疾病中得到测试,例如克罗恩病、系统性红斑狼疮和类风湿性关节炎等。基础与临床研究均证实间充质干细胞在系统性红斑狼疮疾病治疗中发挥有效的免疫调节作用。然而,其在体内发挥的免疫调节作用的机制尚不明确,需要进一步研究间充质干细胞移植的内源性免疫调节功能以阐明治疗性作用的机制。
系统性红斑狼疮:是一种伴有多系统损害的慢性自身免疫性疾病,临床表现多样,几乎全身所有器官都可以受到损伤。特别是继发肺动脉高压的患者,临床预后差,患者1年生存率低于80%。目前,临床上针对系统性红斑狼疮的治疗多采用非特异性免疫抑制,存在免疫抑制后易感染和复发率高等问题。系统性红斑狼疮的发病机制较复杂,尚未完全明确,与其他自身免疫性疾病相似的是免疫调节失衡和在体内形成大量循环免疫复合物,引起全身多器官病变。因此,免疫调节是治疗系统性红斑狼疮的主要探讨方向。

 

摘要
背景:
虽然间充质干细胞治疗系统性红斑狼疮已取得临床疗效,但其免疫调节的内源性功能及作用机制有待深入研究。
目的:探讨来源的脂肪间充质干细胞对系统性红斑狼疮小鼠(MRL/lpr小鼠)免疫功能的影响及其可能机制。
方法:将36只MRL/lpr小鼠随机分为3组:模型对照组不进行干预、磷酸盐缓冲液对照组尾静脉注射磷酸盐缓冲液、干细胞移植组尾静脉注射脂肪间充质干细胞;另取12只C57BL/6小鼠作为正常对照组。  
结果与结论:①分离MRL/lpr小鼠脂肪组织获得的细胞具有脂肪间充质干细胞特性;②模型对照组、磷酸盐缓冲液对照组和干细胞移植组的血清尿素氮、肌酐和抗双链DNA抗体水平均高于正常对照组(P < 0.01);干细胞移植组的血清尿素氮、肌酐和抗双链DNA抗体水平低于模型对照组和磷酸盐缓冲液对照组(P < 0.05);③模型对照组和磷酸盐缓冲液对照组的外周血调节性T细胞阳性率低于正常对照组和干细胞移植组,干细胞移植组外周血调节性T细胞阳性率低于正常对照组(P < 0.01);④模型对照组和磷酸盐缓冲液对照组的脾脏树突状细胞阳性率低于正常对照组和干细胞移植组(P < 0.01);⑤模型对照组、磷酸盐缓冲液对照组和干细胞移植组的Th2比例高于正常对照组(P < 0.05);模型对照组和磷酸盐缓冲液对照组的Th1比例和Th1/Th2比值低于正常对照组和干细胞移植组(P < 0.05);⑥与正常对照组比较,模型对照组和磷酸盐缓冲液对照组外周血中白细胞介素2、干扰素γ、白细胞介素10和T淋巴细胞产生的淋巴毒素水平降低,白细胞介素4水平升高(P < 0.05);与模型对照组和磷酸盐缓冲液对照组比较,干细胞移植组外周血中白细胞介素2、白细胞介素10、干扰素γ和T淋巴细胞产生的淋巴毒素水平升高,白细胞介素4水平降低(P < 0.05)。结果表明脂肪间充质干细胞移植可通过提高树突状细胞和调节性T细胞比例、促进辅助性T细胞亚型的转化对系统性红斑狼疮小鼠免疫功能产生影响。


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:
0000-0002-6678-2397(叶玲)

关键词: 脂肪间充质干细胞, 系统性红斑狼疮, 干细胞移植, 尾静脉注射, 组织工程, 小鼠, 脾脏, 调节性T细胞, 树突状细胞, 辅助性T细胞

Abstract:

BACKGROUND: Although mesenchymal stem cells have achieved clinical efficacy in the treatment of systemic lupus erythematosus, the endogenous function and immunomodulatory mechanism of the cells need to be further studied. 
OBJECTIVE: To investigate the effect of autologous adipose-derived mesenchymal stem cells on immune function in mice with systemic lupus erythematosus and its possible mechanism. 
METHODS: Thirty-six MRL/lpr mice were randomly divided into three groups: model control group without treatment, PBS control group with tail vein injection of PBS, and stem cell transplantation group with tail vein injection of autologous adipose-derived mesenchymal stem cells. Another 12 C57BL/6 mice were taken as normal control group.
RESULTS AND CONCLUSION: (1) The cells obtained from autologous adipose tissue of MRL/lpr mice had the characteristics of adipose-derived mesenchymal stem cells. (2) The levels of serum urea nitrogen, creatinine and anti-double-stranded DNA antibodies in the model control group, PBS control group and stem cell transplantation group were higher than those in the normal control group (P < 0.01). The levels of serum urea nitrogen, creatinine and anti-double-stranded DNA antibody in the stem cell transplantation group were lower than those in the model control group and PBS control group (P < 0.05). (3) The positive rates of peripheral blood regulatory T cells in the model control group and PBS control group were lower than those in the normal control group and stem cell transplantation group, and the positive rate of peripheral blood regulatory T cells in the stem cell transplantation group was lower than that in the normal control group (P < 0.01). (4) The positive rates of splenic dendritic cells in the model control group and PBS control group were lower than those in the normal control group and stem cell transplantation group (P < 0.01). (5) Th2 ratio in the model control group, PBS control group and stem cell transplantation group was higher than that in the normal control group (P < 0.05). Th1 ratio and Th1/Th2 ratio in the model control group and PBS control group were lower than those in the normal control group and stem cell transplantation group (P < 0.05). (6) Compared with the normal control group, the levels of interleukin-2, interferon-γ, interleukin-10 and lymphotoxin in the peripheral blood of model control group and PBS control group decreased, while the level of interleukin-4 increased (P < 0.05). Compared with the model control group and PBS control group, the levels of interleukin-2, interleukin-10, interferon-γ and lymphotoxin in the peripheral blood of the stem cell transplantation group increased, while the level of interleukin-4 decreased (P < 0.05). In conclusion, adipose-derived mesenchymal stem cell transplantation can exert effects on the immune function of mice with systemic lupus erythematosus by increasing the proportions of dendritic cells and regulatory T cells and promoting the transformation of helper T lymphocyte subsets.

Key words: adipose-derived mesenchymal stem cells, systemic lupus erythematosus, stem cell transplantation, tail vein injection, tissue engineering, mouse, spleen, regulatory T cells, dendritic cells, helper T cells

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