| Autor: |
Jones DL; Program in Biological and Biomedical Sciences, Harvard Medical School, Boston, Massachusetts 02115, USA., Thompson DA, Münger K |
| Jazyk: |
angličtina |
| Zdroj: |
Virology [Virology] 1997 Dec 08; Vol. 239 (1), pp. 97-107. |
| DOI: |
10.1006/viro.1997.8851 |
| Abstrakt: |
Cells that express the human papillomavirus (HPV) type 16 E7 oncoprotein are predisposed to undergo apoptosis. Transgenic mice that have E7 expression targeted to either the retinal photoreceptor cells or the lens cells exhibit signs of apoptosis in cells attempting to undergo differentiation. We established a cell culture system to study this process and have determined the domains of E7 that are required for predisposing cells to undergo apoptosis in response to growth arrest signals. Regions within the core pRB binding site of E7 were necessary but not sufficient for inducing apoptosis. Residues within the adenovirus conserved region 1 homology domain and the consensus casein kinase II phosphorylation site are also important for this effect on cell viability. Our data also demonstrate that the ability of E7 to induce destabilization of pRB and stabilization of p53 coincides with E7-mediated transformation and apoptosis. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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