期刊
VIRUSES-BASEL
卷 13, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/v13122451
关键词
HIV-1; fullerene; nucleocapsid; inhibition; RNA packaging
类别
资金
- Ministry of Education, Youth and Sports of the Czech Republic [LTAUSA17061]
- [AH-0033]
Fullerene derivatives with hydrophilic substituents have been shown to exhibit various biological activities, including antiviral effects. Recent studies suggest that the anti-HIV activity of fullerene derivatives may not be solely attributed to their binding to HIV-1 protease, but could involve a novel mechanism related to viral genomic RNA packaging and HIV-1 cDNA synthesis, potentially affecting HIV-1 infectivity. Additionally, the oxidative activity and fluorescence quenching of fullerene derivatives might contribute to the diversity of reported anti-HIV-1 mechanisms.
Fullerene derivatives with hydrophilic substituents have been shown to exhibit a range of biological activities, including antiviral ones. For a long time, the anti-HIV activity of fullerene derivatives was believed to be due to their binding into the hydrophobic pocket of HIV-1 protease, thereby blocking its activity. Recent work, however, brought new evidence of a novel, protease-independent mechanism of fullerene derivatives' action. We studied in more detail the mechanism of the anti-HIV-1 activity of N,N-dimethyl[70]fulleropyrrolidinium iodide fullerene derivatives. By using a combination of in vitro and cell-based approaches, we showed that these C-70 derivatives inhibited neither HIV-1 protease nor HIV-1 maturation. Instead, our data indicate effects of fullerene C-70 derivatives on viral genomic RNA packaging and HIV-1 cDNA synthesis during reverse transcription-without impairing reverse transcriptase activity though. Molecularly, this could be explained by a strong binding affinity of these fullerene derivatives to HIV-1 nucleocapsid domain, preventing its proper interaction with viral genomic RNA, thereby blocking reverse transcription and HIV-1 infectivity. Moreover, the fullerene derivatives' oxidative activity and fluorescence quenching, which could be one of the reasons for the inconsistency among reported anti-HIV-1 mechanisms, are discussed herein.
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