Abstract:
:Our initial results with a bovine papilloma virus (BPV) vector expression system indicated that we could produce significant amounts of Epstein-Barr virus (EBV) gp340/220 in the supernatant of a mouse fibroblast cell line. We have now extended these findings to show that the truncated version of gp340/220, where the membrane anchor sequence is deleted, is produced even after extended passage of the cells, at a level of approximately 1 mg/4 x 10(8) cells. A simple purification protocol using Sephacryl S300HR and gelatin agarose gives a product which is greater than 90% pure. This product is recognized by anti-gp340 monoclonal antibodies from five different epitope groups and induces antibody that recognizes the authentic gp340/220 and neutralizes EBV in vitro. The purified gp340/220 can be used in ELISA and stimulates the proliferation of T-cell clones specific for gp340/220. These characteristics, together with the fact that BPV-transformed lines have been utilized for the production of pharmaceuticals for use in humans, suggest that this gp340/220 is suitable as a source of antigen for vaccination to prevent EBV infection and related diseases.
journal_name
Vaccinejournal_title
Vaccineauthors
Madej M,Conway MJ,Morgan AJ,Sweet J,Wallace L,Qualtiere LF,Arrand JR,Mackett Mdoi
10.1016/0264-410x(92)90513-jsubject
Has Abstractpub_date
1992-01-01 00:00:00pages
777-82issue
11eissn
0264-410Xissn
1873-2518pii
0264-410X(92)90513-Jjournal_volume
10pub_type
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