异基因骨髓移植小鼠Treg、NK细胞及相关细胞因子与aGVHD的关系
本文选题:调节性T细胞 + NK细胞 ; 参考:《西安交通大学学报(医学版)》2017年03期
【摘要】:目的探讨异基因骨髓移植小鼠体内调节性T细胞(Treg)、NK细胞以及与其功能相关的细胞因子白介素-10(IL-10)、转化生长因子(TGF-β)、穿孔素与急性移植物抗宿主病(aGVHD)的关系。方法建立H-2完全不合的C57BL/6→BALB/c纯种小鼠间异基因骨髓移植后发生aGVHD模型。流式细胞仪检测移植后存活的aGVHD小鼠脾脏CD4+CD25+Treg细胞和NK-1.1+NK细胞的比例;ELISA方法检测环孢素A干预aGVHD小鼠血清IL-10、TGF-β和穿孔素的水平,以正常的C57BL/6小鼠为对照。结果与正常小鼠相比,移植后发生aGVHD小鼠体内Treg细胞比例下降(3.6%vs.1.55%),NK细胞比例上升(3.3%vs.11.5%);环孢素A治疗aGVHD组小鼠,与未干预组相比,血清IL-10水平明显上升[(125.79±0.27)pg/mL vs.(103.09±3.27)pg/mL,P0.01],TGF-β水平上升但无统计学差异[(252.05±7.84)pg/mL vs.(241.61±15.41)pg/mL,P0.05],穿孔素水平明显上升[(186.97±4.68)pg/mLvs.(144.35±14.42)pg/mL,P0.01]。结论 (1)小鼠移植后发生aGVHD与Treg细胞比例下降有关,Treg功能相关的细胞因子IL-10、TGF-β参与环孢素A介导的免疫抑制治疗;(2)NK细胞参与异基因骨髓移植后aGVHD的发生过程,穿孔素的水平上升与抑制aGVHD有关。
[Abstract]:Objective to investigate the relationship between regulatory T cell Tregn NK cells and its functional cytokines interleukin-10 (IL-10), transforming growth factor TGF- 尾 (TGF- 尾), perforin and acute graft-versus-host disease (GV HDD) in allogeneic bone marrow transplantation (BMT) mice. Methods A model of aGVHD was established after allogeneic bone marrow transplantation (BMT) in H-2 incompatible C57BL/6 BALB/c mice. The ratio of CD4 CD25 Treg cells to NK-1.1 NK cells in the spleen of surviving aGVHD mice after transplantation was determined by flow cytometry and the levels of IL-10 TGF- 尾 and perforin in serum of aGVHD mice treated with cyclosporine A were detected by Elisa, and the normal C57BL/6 mice were used as control. Results compared with normal mice, the percentage of Treg cells in aGVHD mice after transplantation decreased by 3.6vs.1.55 and the proportion of NK cells increased by 3.3vs.11.50.Cyclosporine A treated aGVHD mice, compared with the non-intervention group, the percentage of NK cells in the mice treated with cyclosporine A was higher than that in the control group. The level of serum IL-10 increased significantly [125.79 卤3.27pg / mLP0.01], but the level of TGF- 尾 increased without statistical difference [252.05 卤7.84)pg/mL vs.(241.61 卤15.41g / mL], and the level of perforin increased obviously [186.97 卤4.68)pg/mLvs.(144.35 卤14.42pg / mL-1 P0.01]. Conclusion (1) the relationship between aGVHD and the decrease of Treg cell ratio after transplantation in mice is related to the role of IL-10TGF- 尾 in the development of aGVHD after allogeneic bone marrow transplantation. The cytokine IL-10TGF- 尾 is involved in cyclosporine A-mediated immunosuppressive therapy (Ciclosporin-A-mediated immunotherapy) and NK cells are involved in the development of aGVHD after allogeneic bone marrow transplantation. The increase of perforin level is related to the inhibition of aGVHD.
【作者单位】: 西安交通大学第二附属医院血液科;
【基金】:国家自然科学基金项目资助(No.30800493) 陕西省科技攻关项目(No.2012-K13-02-19)~~
【分类号】:R457.7
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