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|Titolo:||C-fos proto-oncogene transient transcription is negatively affected in the Ela4-2 transformed rat cell line|
|Autori interni:||ROMANELLI, Maria|
LIBOI, Elio Maria
|Data di pubblicazione:||1993|
|Abstract:||To study the effects of the regulatory phosphoprotein ICP4 of the Herpes simplex virus, (HSV), a DNA tumor virus, on the induction of gene expression by the epidermal growth factor (EGF), we have constructed a cell line, ELa4-2, which constitutively expresses the a-4 gene product. The ELa4-2 cells are derived from the rat fibroblast EL2, in which EGF induces a marked c-fos and c-myc proto-oncogene transcription. Here we report that in ELa4-2 cells, the gene expression induced by EGF was negatively affected in respect to that obtained stimulating the parental EL2 cells. In particular, we studied the c-fos and c-myc proto-oncogene transcription induced by EGF. We found that in ELa4-2 cells the c-fos induction was dramatically reduced in comparison with the c-fos induction obtained in the parental EL2 cells. On the contrary, the c-myc induction by EGF was not affected by the presence of ICP4. Finally, we compared the HSV infectivity in ELa4-2 versus the EL2 cells. We showed that the virus growth capability was reduced, in the cells expressing ICP4.|
|Appare nelle tipologie:||01.01 Articolo in Rivista|
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