The bovine papillomavirus type 1 E6 oncoprotein sensitizes cells to tumor necrosis factor alpha-induced apoptosis.

Abstract:

:Expression of viral proteins may result in susceptibility of cells to the cytotoxic effect of Tumor Necrosis Factor Alpha (TNF). While murine C127 cells containing the bovine papillomavirus type 1 (BPV-1) genome were reported to exhibit increased TNF sensitivity, the gene(s) responsible was not identified. The BPV-1 E6 oncoprotein induces tumorigenic transformation of murine C127 cells and stimulates transcription when targeted to a promoter. BPV-1 E6 was introduced into C127 cells (PBE6) by retroviral infection and stable clones were isolated. These cells showed increased apoptosis in response to TNF, as measured by several criteria. TNF-induced apoptosis in PBE6 cells was accompanied by increased release of arachidonic acid, indicating that phospholipase A2 was activated. We also provide evidence that BPV-1 E6 mediated-sensitization of cells to TNF-induced apoptosis can occur in the absence of p53.

journal_name

Oncogene

journal_title

Oncogene

authors

Rapp L,Liu Y,Hong Y,Androphy EJ,Chen JJ

doi

10.1038/sj.onc.1202373

subject

Has Abstract

pub_date

1999-01-21 00:00:00

pages

607-15

issue

3

eissn

0950-9232

issn

1476-5594

journal_volume

18

pub_type

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