CATALOGO DEI PRODOTTI DELLA RICERCA
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EnglishTo 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.
| Titolo: | C-fos proto-oncogene transient transcription is negatively affected in the Ela4-2 transformed rat cell line |
| Autori: | |
| Data di pubblicazione: | 1993 |
| Rivista: | |
| 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. |
| Handle: | http://hdl.handle.net/11562/3010 |
| Appare nelle tipologie: | 01.01 Articolo in Rivista |
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