Development of 7SK snRNA Mimics That Inhibit HIV Transcription.
ChemMedChem
; 16(20): 3181-3184, 2021 10 15.
Article
em En
| MEDLINE
| ID: mdl-34233081
ABSTRACT
The 332-nucleotide small nuclear RNA (snRNA) 7SK is a highly conserved non-coding RNA that regulates transcriptional elongation. By binding with positive transcriptional elongation factor b (P-TEFb) via HEXIM1, 7SK snRNA decreases the kinase activity of P-TEFb and inhibits transcriptional elongation. Additionally, it is reported that 7SK inhibition results in the stimulation of human immunodeficiency virus (HIV)-specific transcription. These reports suggest that 7SK is a naturally occurring functional molecule as negative regulator of P-TEFb and HIV transcription. In this study, we developed functional oligonucleotides that mimic the function of 7SK (7SK mimics) as novel inhibitors of HIV replication. We defined the essential region of 7SK regarding its suppressive effects on transcriptional downregulation using an antisense strategy. Based on the results, we designed 7SK mimics containing the defined region. The inhibitory effects of 7SK mimics on HIV-1 long terminal repeat promoter specific transcription was drastic compared with those of the control mimic molecule. Notably, these effects were found to be more enhanced by co-transfection with Tat-expressing plasmids. From these results, it is indicated that 7SK mimics may have great therapeutic potential for HIV/AIDS treatment.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Transcrição Gênica
/
RNA Nuclear Pequeno
/
Produtos do Gene tat do Vírus da Imunodeficiência Humana
/
Desenvolvimento de Medicamentos
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
ChemMedChem
Assunto da revista:
FARMACOLOGIA
/
QUIMICA
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Japão