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目的：探讨Foxp3基因转染的Teff淋巴细胞在抗高危角膜移植排斥中的作用。方法将Foxp3基因转染Teff淋巴细胞与Teff淋巴细胞进行混合培养，观察其对Teff淋巴细胞的抑制作用；角膜缝线法诱导Balb／c小鼠产生角膜新生血管，角膜缝线1周后以Balb／c小鼠为受体，以C57／BL6小鼠为供体行穿透性角膜移植，术前1 d尾静脉输入Foxp3基因转染的Teff淋巴细胞。术后，每天观察角膜植片排斥情况；每两周尾静脉取血观察淋巴细胞分型。结果体外实验显示Foxp3基因转染的Teff淋巴细胞对Teff淋巴细胞具有明显抑制作用；在高危角膜移植小鼠，Foxp3基因转染的Teff淋巴细胞可适当延长植片存活时间（19．71±4．19）d，Treg组角膜植片存活时间（19．28±4．46）d，两组对比差异无统计学意义（P＞0．05）；空白组角膜存活时间（15．57±2．22），与Foxp3基因转染的Teff细胞组对比，差异有统计学意义（P＜0．05）；流式细胞学检查显示：FoxP3转染的淋巴细胞可延缓C D4＋T淋巴细胞与C D8＋T淋巴细胞增殖。结论转染Foxp3基因的Teff细胞具有抗移植排斥作用。“,”Objective To observe the effects of Foxp3 gene-transfected Teff lymphocytes against the high-risk corneal transplantation rejection.Methods The Foxp3 gene-transfected Teff lymphocytes and the Teff lymphocytes were cul-tured together to observe the inhibitory effects on the Teff lymphocytes.Corneal neovascularization was induced by cor-neal suture in Balb/c mice and after one week,penetrating corneal transplantations were performed while Balb/c mice as receptors and C57/BL6 mice as donors.One day before the surgery,injection of Foxp 3 gene-transfected Teff lym-phocytes were performed via tail vein of Balb/c mice.After the surgery,the state of corneal transplantation was moni-tored on a day to day basis and tail vein blood was sampled once every two weeks to check the lymphocyte types. Results The in vitro experiments showed strong inhibitory effects of Foxp3 gene-transfected Teff lymphocytes on the Teff lymphocytes.To the high-risk corneal transplantation mice,the Foxp3 gene-transfected Teff lymphocytes could moderately extend the survival time of the grafts (19.71 ±4.19d)while the survival time of the corneal grafts in the Treg group was 19.28 ±4.46d (P>0.05).On the contrary,the comparison between the Foxp3 gene-transfected Teff lymphocytes and the blank group (15.57 ±2.22d)demonstrated some significance (P<0.05).Flow cytology indi-cated that the Foxp3 gene-transfected lymphocytes could delay the proliferation of C D4+T and C D8+T lymphocytes. Conclusion The Foxp3 gene-transfected Teff lymphocytes could prevent transplant rejection.