Endogenous TGF-β contributes to the induction of the EBV lytic cycle in two burkitt lymphoma cell lines

✍ Scribed by Livia di Renzo; Aysin Alttok; George Klein; Eva Klein

• Book ID: 102866881
• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: French
• Weight: 590 KB
• Volume: 57
• Category: Article
• ISSN: 0020-7136
• DOI: 10.1002/ijc.2910570623

✦ Synopsis

A low proportion of cells in the BL lines P3HR-I and Akata enter spontaneously into the EBV lytic cycle, detectable by the expression of early antigens (EA). We found that both lines produce the active and inactive forms of TGFP. It was shown earlier that a larger number of cells can be induced to enter the lytic cycle by exposing P3HR-I to phorbol esters and n-butyrate and the surface IgG-positive Akata cells to anti-lgG. We now show that the same treatments raise the level of active TGFP release. Exposure to anti-TGFQ antibodies reduced EA induction by 75-85%. Our results indicate that induction of the viral MATERIAL AND METHODS