Abstract:
:We recently reported a series of 2,6-dipeptidyl-anthraquinone conjugates (AQs) as Trans-Activation Response element (TAR) RNA-binding agents able to inhibit in vitro the HIV-1 nucleocapsid (NC) protein-mediated processes. Because NC is a highly adaptable nucleic acid chaperone assisting several crucial steps along reverse transcription, in this study we investigate the ability of AQs to interact with other virus-derived nucleic acid structures thus potentially inhibiting multiple NC functions. Focusing on the HIV-1 Primer Binding Site (PBS) RNA sequence, we demonstrate that properly substituted dipeptidyl-anthraquinone conjugates efficiently inhibit the NC-mediated primer annealing in the low micromolar range. Similarly, we extended the analysis to the HIV-1 trans-activator of transcription (Tat) peptide, which has been recently shown to mimic the annealer functions of NC upon interacting with the same nucleic acid regulatory sequences. Our results highlight how RNA-targeting agents can act as multimode inhibitors of key viral proteins affecting their chaperone activity in reverse transcription processes.
journal_name
ACS Med Chem Lettjournal_title
ACS medicinal chemistry lettersauthors
Gamba E,Sosic A,Saccone I,Magli E,Frecentese F,Gatto Bdoi
10.1021/acsmedchemlett.9b00682subject
Has Abstractpub_date
2020-03-23 00:00:00pages
949-955issue
5issn
1948-5875journal_volume
11pub_type
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