共 46 条
HERPES-SIMPLEX VIRUS TYPE-1 DNA PERSISTENCE, PROGRESSIVE DISEASE AND TRANSGENIC IMMEDIATE-EARLY GENE PROMOTER ACTIVITY IN CHRONIC CORNEAL INFECTIONS IN MICE
被引:43
作者:
MITCHELL, WJ
[1
]
GRESSENS, P
[1
]
MARTIN, JR
[1
]
DESANTO, R
[1
]
机构:
[1] NINCDS,VIRAL & MOLEC PATHOGENESIS LAB,BETHESDA,MD 20892
关键词:
D O I:
10.1099/0022-1317-75-6-1201
中图分类号:
Q81 [生物工程学(生物技术)];
Q93 [微生物学];
学科分类号:
071005 ;
0836 ;
090102 ;
100705 ;
摘要:
We have used a mouse model system and the corneal route of inoculation to examine the issue of extraneuronal persistence of herpes simplex virus type 1 (HSV-1). HSV-1 strain F DNA and inflammatory lesions were detected in corneal tissue of mice at 5, 11, 23, 37 and 60 days post-infection (p.i.). Viral DNA was localized by in situ PCR to epithelial cells and less frequently to cells in the stroma of the cornea. Viral proteins were not detected in the cornea and virus could not be isolated from tissue homogenates after 11 days p.i. even though histopathological lesions became progressively more severe at 37 and 60 days p.i. The DNA-containing cells were usually adjacent to the sites of inflammation or within these sites in the chronic stage (23, 37 and 60 days p.i.). In contrast to strain F, persistence of HSV-1 strain KOS DNA and inflammatory lesions were not detected after 11 days p.i.; this result suggests that the long-term persistence of HSV-1 DNA and the development of inflammatory lesions are virus strain-dependent. We tested for the possibility of transgenic HSV-1 immediate early gene (ICP4) promoter activity in chronically infected corneas of transgenic mice containing the ICP4 promoter fused to the bacterial beta-galactosidase coding sequence. Our results indicated that the chimeric transgene was expressed in the cornea at 5, 11, 23, 37 and 41 days p.i. Possible explanations for these results and mechanisms for the generation of the chronic inflammatory lesions are discussed. The properties of chronic HSV infections in the cornea may be similar to those which have been described for persistent or defective viral infections in other systems.
引用
收藏
页码:1201 / 1210
页数:10
相关论文