Natural Compounds as Non-Nucleoside Inhibitors of Zika Virus Polymerase through Integration of In Silico and In Vitro Approaches

Although the past epidemic of Zika virus (ZIKV) resulted in severe neurological consequences for infected infants and adults, there are still no approved drugs to treat ZIKV infection. In this study, we applied computational approaches to screen an in-house database of 77 natural and semi-synthetic...

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Main Authors: Paulo Ricardo Pimenta da Silva Ramos (Author), Melina Mottin (Author), Caroline Sprengel Lima (Author), Letícia R. Assis (Author), Ketllyn Zagato de Oliveira (Author), Nathalya Cristina de Moraes Roso Mesquita (Author), Natasha Marques Cassani (Author), Igor Andrade Santos (Author), Joyce Villa Verde Bastos Borba (Author), Vinícius Alexandre Fiaia Costa (Author), Bruno Junior Neves (Author), Rafael Victorio Carvalho Guido (Author), Glaucius Oliva (Author), Ana Carolina Gomes Jardim (Author), Luis Octávio Regasini (Author), Carolina Horta Andrade (Author)
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Published: MDPI AG, 2022-11-01T00:00:00Z.
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042 |a dc 
100 1 0 |a Paulo Ricardo Pimenta da Silva Ramos  |e author 
700 1 0 |a Melina Mottin  |e author 
700 1 0 |a Caroline Sprengel Lima  |e author 
700 1 0 |a Letícia R. Assis  |e author 
700 1 0 |a Ketllyn Zagato de Oliveira  |e author 
700 1 0 |a Nathalya Cristina de Moraes Roso Mesquita  |e author 
700 1 0 |a Natasha Marques Cassani  |e author 
700 1 0 |a Igor Andrade Santos  |e author 
700 1 0 |a Joyce Villa Verde Bastos Borba  |e author 
700 1 0 |a Vinícius Alexandre Fiaia Costa  |e author 
700 1 0 |a Bruno Junior Neves  |e author 
700 1 0 |a Rafael Victorio Carvalho Guido  |e author 
700 1 0 |a Glaucius Oliva  |e author 
700 1 0 |a Ana Carolina Gomes Jardim  |e author 
700 1 0 |a Luis Octávio Regasini  |e author 
700 1 0 |a Carolina Horta Andrade  |e author 
245 0 0 |a Natural Compounds as Non-Nucleoside Inhibitors of Zika Virus Polymerase through Integration of In Silico and In Vitro Approaches 
260 |b MDPI AG,   |c 2022-11-01T00:00:00Z. 
500 |a 10.3390/ph15121493 
500 |a 1424-8247 
520 |a Although the past epidemic of Zika virus (ZIKV) resulted in severe neurological consequences for infected infants and adults, there are still no approved drugs to treat ZIKV infection. In this study, we applied computational approaches to screen an in-house database of 77 natural and semi-synthetic compounds against ZIKV NS5 RNA-dependent RNA-polymerase (NS5 RdRp), an essential protein for viral RNA elongation during the replication process. For this purpose, we integrated computational approaches such as binding-site conservation, chemical space analysis and molecular docking. As a result, we prioritized nine virtual hits for experimental evaluation. Enzymatic assays confirmed that pedalitin and quercetin inhibited ZIKV NS5 RdRp with IC<sub>50</sub> values of 4.1 and 0.5 µM, respectively. Moreover, pedalitin also displayed antiviral activity on ZIKV infection with an EC<sub>50</sub> of 19.28 µM cell-based assays, with low toxicity in Vero cells (CC<sub>50</sub> = 83.66 µM) and selectivity index of 4.34. These results demonstrate the potential of the natural compounds pedalitin and quercetin as candidates for structural optimization studies towards the discovery of new anti-ZIKV drug candidates. 
546 |a EN 
690 |a Zika virus 
690 |a antiviral 
690 |a polymerase 
690 |a docking 
690 |a drug discovery 
690 |a NS5 RdRp protein 
690 |a Medicine 
690 |a R 
690 |a Pharmacy and materia medica 
690 |a RS1-441 
655 7 |a article  |2 local 
786 0 |n Pharmaceuticals, Vol 15, Iss 12, p 1493 (2022) 
787 0 |n https://www.mdpi.com/1424-8247/15/12/1493 
787 0 |n https://doaj.org/toc/1424-8247 
856 4 1 |u https://doaj.org/article/32c21ce3e6b64cde9f22e5b56d958a25  |z Connect to this object online.