中文摘要：

目的观察重组Galectin-9腺病毒对小鼠心脏移植物生存期及调节性T（Treg）细胞分化和增殖的影响。方法建立小鼠心脏移植模型,随机均分为3组（n=10）：对照组（术后用0.9%NaCl溶液）、空腺病毒组、重组Galectin-9腺病毒组,记录心脏移植物生存时间,于移植心停搏或术后14d取脾,分离单个核细胞,流式细胞仪检测CD4＋CD25＋Treg细胞比例。ELISA法检测外周血IL-10、TGF-β1浓度。结果与对照组、空腺病毒组相比,重组Galectin-9腺病毒组心脏移植物生存时间明显升高（P〈0.01）,重组Galectin-9腺病毒组CD4＋CD25＋Treg细胞比例明显升高（P〈0.01）。重组Galectin-9腺病毒组IL-10、TGF-β1的含量明显高于对照组及空腺病毒组（P〈0.01）。结论重组Galectin-9腺病毒能促进体内CD4＋CD25＋Treg细胞的分化与增殖,明显提高小鼠心脏移植物的生存时间。

英文摘要：

Objective To explore the influence of adenovirus carrying Galectin-9 gene on the survival of cardiac transplant and the differentiation and proliferation of CD4＋CD25＋Treg cells in mice receiving heterotopic heart transplantation.Methods Neck heterotopic heart transplantation models were established with male BALB/c→C57BL/6 mice by Cuff method,and they were randomly divided into 3 groups （n=10）：control group （received 0.9% sodium chloride solution after operation）,adenovirus group,and pAdeasyTM Galectin-9 treatment group.The survival time of the graft hearts was recorded.The spleens of mice were collected when the graft hearts stopped beating or 14 days after operation;the mononuclear cells were isolated and the proportion of CD4＋CD25＋ Treg cells was determined by flow cytometry.Treg cell related cytokines （IL-10,TGF-β1） in the peripheral blood were assayed by ELISA.Results The cardiac allografts in pAdeasyTM Galectin-9 group survived significantly longer than those in the other two groups （P0.01）,and the proportion of CD4＋CD25＋ Treg cells in CD4 ＋ T cells was significantly higher（P0.01）.The levels of IL-10 and TGF-β1 were increased in pAdeasyTM Galectin-9 group compared with control group and adenovirus group（P0.01）.Conclusion pAdeasyTM Galectin-9 can promote the proliferation and differentiation of CD4＋CD25＋ Treg cells in vivo,and can greatly improve the survival time of cardiac allograft after heart transplantation in mice.