Abstract
A mouse monoclonal antibody against EB virus EA-R named BAE- 5 was prepared applying hybridoma technique by use of n-butyric add and croton oil induced Raji cells as immunogen. And men, 34 NPCs and 29 non- NPC neoplasms were detected by the BAE- 5 using APAAP immunohistochemical staining method.The results indicated that all of the 34 NPCs and 9 of the 29 non-NPC neoplasms could reacted with the BAE-5 in spite of the columnar epithelium reserve cells showing positivity also. It is reasonable to come to the conclusion that most of the NPC cells can not only harbour EBV DNA but some of them be able to express EA-R. Some non-NPC neoplasms being demonstrated BAE-5 positivity may be due to the presence of EBV EA- R antigenic epitope or polypeptides simulating the structure of EA-R. The authors think that these findings have theoretical significance for understanding the role of EBV- encoded polypeptides, especially EA complex, in the development and progression of NPC as well as some non- NPC neoplasms harbouring EBV-DNA.
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