异体角膜刺激引起的人外周血T细胞及其亚群CD25分子表达

目的：观察异体角膜体外对人外周血T细胞及其亚群CD25分子表达的影响。方法： 异体角膜与外周血淋巴细胞体外共同培养后，进行单克隆抗体标记和流式细胞分析。结果： 对照组T细胞CD25表达为25.2％；受角膜或沸波醇酯（PDB）激活后T细胞CD25表达分别为56.8％和80.9％；受角膜和沸波醇酯共同激活后T细胞CD25表达为70.2％；受异体角膜激活后，CD4和CD8 T淋巴细胞CD25表达分别为67.3％和52.3％。结论： 异体角膜组织体外能够刺激人外周T细胞CD25表达和T细胞活化，CD4 T细胞比CD8 T细胞活化更明显。

Influence of allogeneic cornea on human peripheral blood T lymphocyte subtype in vitro

AIM: To observe the immunoregulation of all ogeneic cornea on the human peripheral blood T lymphocytes in vitro. METHODS: After Co-culture of human peripheral blood lymphocytes and allogeneic cornea in vitro, T lymphocytes were labeled by monoclonal ant ibody, and analyzed by fluorescent activated cell sorter (FACS). RESULTS: CD25 expression on T lymphocytes in control was 25.2%, after stimulated by the allogeneic cornea or PDB, CD25 expression on T lymphocy tes was 56.8% and 80.9%, respectively. After stimulated by the allogeneic corn ea, CD25 expression on CD 4 or CD 8 T lymphocytes were 67.3% and 52.3% , respectively. CONCLUSION: Allageneic cornea stimulates CD25 expression on huma n peripheral blood T lymphocytes, and the CD25 expression on CD 4 T lymphocy tes is more prominent than CD 8 T lymphocytes.