Human papillomavirus type 16 E7-regulated genes: regulation of S100P and ADP/ATP carrier protein genes identified by differential-display technology.
Human papillomavirus type 16 (HPV-16) is the dominant risk factor for the development of cervical cancer. The virus encodes three oncoproteins, of which the E7 oncoprotein is the major protein involved in cell immortalization and transformation. E7 is a multi-functional protein. It binds the retinoblastoma tumour-suppressor protein (pRb), which regulates progression through the G(1) restriction point in the cell cycle. The E7 protein interacts with transcription-regulatory proteins such as the TATA box-binding protein and with proteins of the AP1 transcription factor family. To identify additional proteins regulated by E7, differential-display PCR was used to identify differentially expressed mRNAs in cells containing an inducible E7 protein. It is reported that E7 expression leads to regulation of the genes encoding the calcium-binding protein S100P and the mitochondrial ADP/ATP carrier protein. These data identify new functions of the E7 protein and thus expand the number of routes by which HPV-16 influences cell growth control, although the function of S100P has still to be elucidated.
Hellung Schønning
B
B
Institute of Molecular Pathology, Protein Laboratory, Panum Institute, Blegdamsvej 3C, Bldg 6.2, DK-2200 Copenhagen N, Denmark.
Bévort
M
M
Mikkelsen
S
S
Andresen
M
M
Thomsen
P
P
Leffers
H
H
Norrild
B
B
D002135:Calcium-Binding Proteins / Q000235:genetics*; D015967:Gene Expression Regulation, Viral; D005814:Genes, Viral; D006801:Humans; D009363:Neoplasm Proteins; D009856:Oncogene Proteins, Viral / Q000235:genetics*; D027383:Papillomaviridae / Q000235:genetics*; D050725:Papillomavirus E7 Proteins; D030361:Papillomavirus Infections / Q000235:genetics*; D016133:Polymerase Chain Reaction; D018160:Receptors, Cytoplasmic and Nuclear / Q000235:genetics*; D014412:Tumor Virus Infections / Q000235:genetics*
C037688:ADP-ATP carrier receptor; D002135:Calcium-Binding Proteins; D009363:Neoplasm Proteins; D009856:Oncogene Proteins, Viral; D050725:Papillomavirus E7 Proteins; D018160:Receptors, Cytoplasmic and Nuclear; C103003:S100P protein, human; C059731:oncogene protein E7, Human papillomavirus type 16