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山东大学学报(医学版)

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MSCs联合雷帕霉素对异基因鼠脾
淋巴细胞的免疫调节作用

殷玉俊1,李晶2,汤郁2,尤海燕3,朱伟4,许文荣4,焦志军3
  

  1. (1. 江苏大学附属医院皮肤科, 江苏 镇江 212001; 2. 江苏大学附属医院风湿科, 江苏 镇江 212001;
    3. 江苏大学附属医院检验科,江苏 镇江 212001; 4. 江苏大学医学技术学院 江苏 镇江 212013)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 发布日期:2009-04-16
  • 通讯作者: 李晶

Mesenchymal stem cells combined with rapamycin immunoregulates
the spleniclymphocytes in allogenic mice

YIN Yujun1, LI Jing2, TANG Yu2, YOU Haiyan3, ZHU Wei4, XU Wengrong4, JIAO Zhijun3
  

  1. (1. Department of Dermatology, 2. Department of Rheumatology, 3. Department Laboratory, Affiliated Hospital of Jiangsu University,
    Zhenjiang 212001, Jiangsu, China; 4. School of Medical Technology, Jiangsu University, Zhenjiang 212013, Jiangsu, China)
  • Received:1900-01-01 Revised:1900-01-01 Published:2009-04-16
  • Contact: LI Jing

摘要: 目的探讨体外骨髓间充质干细胞(MSCs)联合雷帕霉素对BALB/c鼠T、B淋巴细胞的免疫调节作用及可能机制。方法从5~6周龄BALB/c鼠骨髓中分离培养MSCs并鉴定其纯度。用EZSepTM Mouse 1X分离异体BALB/c鼠脾脏淋巴细胞,分别在刀豆蛋白A(ConA)、脂多糖(LPS)刺激下,用MSCs和/或雷帕霉素处理,MTT法检测淋巴细胞的增殖,流式细胞术检测T、B淋巴细胞CD69、CD28和CD86的表达和T淋巴细胞凋亡情况,Realtime PCR测定T淋巴细胞IL10 mRNA、IFNγ mRNA的表达水平。结果MSCs明显抑制T、B淋巴细胞增殖,联合雷帕霉素组抑制作用更加显著(P<0.01)。MSCs可抑制T淋巴细胞的凋亡,联合雷帕霉素组较单独MSCs组抑制作用更加明显(P<0.01)。MSCs联合雷帕霉素具有协同促进IFNγ mRNA表达和协同抑制IL10 mRNA表达的作用。单独MSCs或MSCs联合雷帕霉素对T、B淋巴细胞CD69、CD28和CD86的表达无显著影响。结论MSCs联合雷帕霉素对BALB/c鼠T、B淋巴细胞有免疫负调节作用,可能与协同抑制淋巴细胞增殖、T淋巴细胞凋亡和干预IFNγ mRNA、IL10 mRNA表达有关。

关键词: 间充质干细胞, 雷帕霉素, 淋巴细胞, 免疫调节

Abstract: To investigate the immunoregulatory effects of mesenchymal stem cells(MSCs) combined with rapamycin on T and B cells in vitro and its potential mechanism. MethodsMSCs were isolated and cultivated from the bone marrow of 56 weekold BALB/c mice in vitro. The purity was detected through surface markers by flow cytometry(FCM). Splenic lymphocytes were isolated by EZSep(tm) Mouse 1X. Under ConA or LPS stimulation, lymphocytes were treated with MSCs and/or rapamycin. The proliferation was assessed by MTT coloremetry. FCM was used to analyze the apoptosis and surface markersCD69, CD28 and CD86. mRNA expressions of cytokines were detected by realtime quantitative PCR. ResultsBoth MSCs and MSCs combined with rapamycin could significantly inhibit proliferation of lymphocytes and the apoptosis of T cells. However, the inhibitory effect of the latter was more obvious than that of the former (P<0.01). Both MSCs and MSCs combined with rapamycin could significantly increase expression of interferon (IFN)γ mRNA but decrease expression of interleukin (IL)10. No differences of CD69, CD28 and CD86 expressions were observed among all groups. ConclusionMSCs combined with rapamycin could downmodulate the function of T and B cells, and the potential mechanism may be related to its effect on the proliferation,apoptosis and mRNA expressions of IFNγ and IL10.

Key words: Mesenchymal stem cells, Rapamycin, Lymphocytes, Immunoregulatory

中图分类号: 

  • R392
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