Human immunodeficiency virus long terminal repeat responds to transformation by the mutant T24 H-ras1 oncogene and it contains multiple AP-1 binding TPA-inducible consensus sequence elements.
Anticancer Res
; 9(2): 383-6, 1989.
Article
em En
| MEDLINE
| ID: mdl-2665635
ABSTRACT
We have employed a short term transfection assay to examine the response of HIV-1 LTR to transformation by the human normal and mutant T24 H-ras1 genes. The plasmid pBC12HIVCAT which carries the HIV-1 LTR sequences linked to the reporter gene chloramphenicol acetyl transferase (CAT) was transfected into rat 208F fibroblasts and their derivatives RFHO6N1-1 and RFHO6T1-1 transfectants. RFHO6N1-1 and RFHO6T1-1 express an exogenous human normal or mutant T24 H-ras1 gene respectively. Expression of the mutant T24 but not the normal H-ras1 gene resulted in increased levels of HIV-1 LTR driven CAT activity. We have noted four motifs in the HIV-1 LTR region which resemble TPA-inducible and AP-1 binding consensus sequences. Since H-ras1 fos and jun/AP-1 respond to TPA and T24 H-ras1 is known to induce both fos and jun/AP-1 nuclear transcriptional factors, it is possible that the latter genes play a role in HIV-1 transcription. Moreover, H-ras1 oncogene activation may play an important role in HIV gene expression and in the activation of latent HIV.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
DNA Viral
/
Transformação Celular Neoplásica
/
Sequências Reguladoras de Ácido Nucleico
/
Genes ras
/
HIV
Limite:
Animals
Idioma:
En
Ano de publicação:
1989
Tipo de documento:
Article