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EnglishCotransfection of NIH 3T3 cells with a mammalian expression vector containing a v-Ha-ras gene, together with a plasmid carrying the human immunodeficiency virus (HIV) long terminal repeat (LTR) linked to the chloramphenicol acetyl transferase (CAT) reporter gene, significantly stimulated CAT activity. High HIV LTR activation was also observed in cell lines carrying stably transfected ras oncogenes, activated by point mutation or amplification. By contrast an inactivated form of ras (Ha-ras Asn-17) did not stimulate the HIV-LTR but strongly inhibited its basal activity. Activation of the p21ras protein may thus be one of the signals that regulate LTR driven transcription during HIV infection.
| Titolo: | Modulation of HIV-LTR activity by ras oncogenes. | |
| Autori Riconosciuti: | ||
| Autori: | LEMBO D ;ANGERETTI A ;GABOLI M ;CAVALLO R ;LANDOLFO S | |
| Data di pubblicazione: | 1995 | |
| Abstract: | Cotransfection of NIH 3T3 cells with a mammalian expression vector containing a v-Ha-ras gene, together with a plasmid carrying the human immunodeficiency virus (HIV) long terminal repeat (LTR) linked to the chloramphenicol acetyl transferase (CAT) reporter gene, significantly stimulated CAT activity. High HIV LTR activation was also observed in cell lines carrying stably transfected ras oncogenes, activated by point mutation or amplification. By contrast an inactivated form of ras (Ha-ras Asn-17) did not stimulate the HIV-LTR but strongly inhibited its basal activity. Activation of the p21ras protein may thus be one of the signals that regulate LTR driven transcription during HIV infection. | |
| Volume: | 18 | |
| Pagina iniziale: | 111 | |
| Pagina finale: | 116 | |
| Rivista: | NEW MICROBIOLOGICA | |
| Appare nelle tipologie: | 03A-Articolo su Rivista |
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