Regulation of cyclin E gene expression by the human papillomavirus type 16 E7 oncoprotein.
In this study, we characterized the 5' regulatory region of the murine cyclin E gene and analysed activation of the gene by the E7 oncogene of human papillomavirus type 16 in transfection experiments. We found that the murine cyclin E promoter is composed of multiple regulatory elements, and we present evidence for at least two independent transcription units, designated P1 and P2. Overlapping binding sites for the cellular transcription factors Sp1 and E2F were identified in both promoters, and we found that E2F-mediated activation of transcription is inhibited by Sp1 in cotransfection experiments. The E2F/Sp1 binding sites contribute to transcriptional activation by E7, and the data suggest that the cyclin E gene is rendered E7-inducible through the combination of several cis-acting elements which display only weak intrinsic responsiveness to E7.
Vogt
Beate
B
Deutsches Krebsforschungszentrum, Forschungsschwerpunkt Angewandte Tumorvirologie, Abt. F0301, INF 242, D-69120 Heidelberg, Germany1.
Zerfaß-Thome
Karin
K
Deutsches Krebsforschungszentrum, Forschungsschwerpunkt Angewandte Tumorvirologie, Abt. F0301, INF 242, D-69120 Heidelberg, Germany1.
Schulze
Almut
A
Deutsches Krebsforschungszentrum, Forschungsschwerpunkt Angewandte Tumorvirologie, Abt. F0301, INF 242, D-69120 Heidelberg, Germany1.
Botz
Jürgen W
JW
Deutsches Krebsforschungszentrum, Forschungsschwerpunkt Angewandte Tumorvirologie, Abt. F0301, INF 242, D-69120 Heidelberg, Germany1.
Zwerschke
Werner
W
Deutsches Krebsforschungszentrum, Forschungsschwerpunkt Angewandte Tumorvirologie, Abt. F0301, INF 242, D-69120 Heidelberg, Germany1.
Jansen-Dürr
Pidder
P
Deutsches Krebsforschungszentrum, Forschungsschwerpunkt Angewandte Tumorvirologie, Abt. F0301, INF 242, D-69120 Heidelberg, Germany1.
D016475:3T3 Cells; D000818:Animals; D001665:Binding Sites; D002352:Carrier Proteins; D018797:Cell Cycle Proteins; D002460:Cell Line; D019927:Cyclin E / Q000235:genetics*; D004268:DNA-Binding Proteins; D004330:Drosophila; D029721:Drosophila Proteins; D050684:E2F Transcription Factors; D005786:Gene Expression Regulation; D006801:Humans; D051379:Mice; D009856:Oncogene Proteins, Viral / Q000235:genetics / Q000502:physiology*; D027383:Papillomaviridae; D050725:Papillomavirus E7 Proteins; D011401:Promoter Regions, Genetic; D056465:Retinoblastoma-Binding Protein 1; D016329:Sp1 Transcription Factor / Q000378:metabolism; D015534:Trans-Activators; D050680:Transcription Factor DP1; D014157:Transcription Factors / Q000378:metabolism; D014158:Transcription, Genetic; D015533:Transcriptional Activation
C533431:Arid4a protein, mouse; D002352:Carrier Proteins; D018797:Cell Cycle Proteins; D019927:Cyclin E; D004268:DNA-Binding Proteins; C088053:Dp transcription factor, Drosophila; D029721:Drosophila Proteins; D050684:E2F Transcription Factors; D009856:Oncogene Proteins, Viral; D050725:Papillomavirus E7 Proteins; D056465:Retinoblastoma-Binding Protein 1; D016329:Sp1 Transcription Factor; D015534:Trans-Activators; D050680:Transcription Factor DP1; D014157:Transcription Factors; C059731:oncogene protein E7, Human papillomavirus type 16