期刊名称:Proceedings of the National Academy of Sciences
印刷版ISSN:0027-8424
电子版ISSN:1091-6490
出版年度:1986
卷号:83
期号:24
页码:9665-9669
DOI:10.1073/pnas.83.24.9665
语种:English
出版社:The National Academy of Sciences of the United States of America
摘要:The immune defense against viral infections involves cytotoxic T lymphocytes that recognize viral products in the context of class I major histocompatibility complex (MHC) antigens. To evade such immune surveillance viruses may have evolved various strategies to manipulate the expression of class I antigens. Adenovirus 2 manufactures an early glycoprotein, E19, that binds to nascent class I antigens in the endoplasmic reticulum and impedes their transport to the cell surface. We now show that adenoviruses typical of all viral subgenera except the highly oncogenic subgenus A dramatically reduce the cell-surface expression of class I antigens. It has been shown that subgenus A viruses abolish class I antigen expression in transformed cells by reducing mRNA levels. Thus, all adenoviruses can modulate the cell-surface expression of class I antigens.