Role of Fas-Fas ligand interactions in the immunorejection of allogeneic mouse corneal transplants

被引:106
作者
Yamagami, S
Kawashima, H
Tsuru, T
Yamagami, H
Kayagaki, N
Yagita, H
Okumura, K
Gregerson, DS
机构
[1] UNIV TOKYO, SCH MED,WOMENS MED COLL,DEPT OPHTHALMOL, SECT CORNEAL TRANSPLANTAT, TOKYO 113, JAPAN
[2] JUNTENDO UNIV, SCH MED, DEPT IMMUNOL, TOKYO, JAPAN
[3] UNIV MINNESOTA, DEPT OPHTHALMOL, MINNEAPOLIS, MN 55455 USA
关键词
D O I
10.1097/00007890-199710270-00004
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Background The expression of Fas ligand (Fast) in the eye has been proposed to be an important component of ocular immune privilege. Since the unusually favorable outcome of corneal transplantation is thought to result from the immune privilege of the eye, examination of the function of Fast on corneal allografts would be a test of that hypothesis. Methods. To investigate the role of Fas-FasL interaction in corneal allografts, orthotopic corneal transplantation was performed using C57BL/6 (B6, FasL(+)) and BG-gld (FasL(-)) mice as cornea donors and BALB/c mice as recipients. The rejection rate of BG-gld grafts (Fast-group) was compared with that of normal B6 control corneas. Results. The rejection rate at the final observation (8 weeks) in the FasL(-) group (89%) was significantly higher than in the FasL(+) control group (47%). Fast expression was found on the corneal endothelium by staining with anti-Fast monoclonal antibodies. The TdT-mediated dUTP nick-end labeling assay revealed that apoptotic cells were attached to the endothelium in the control group but not in the FasL(-) groups. Conclusions. Apoptosis of infiltrating cells on the corneal endothelium resulting from Pas-Fast interaction plays an important role in the high success rate of corneal transplantation.
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页码:1107 / 1111
页数:5
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