2021
Broad-Spectrum Antiviral Activity of 3'-Deoxy-3'Fluoroadenosine against Emerging Flaviviruses
EYER, Luděk; Pavel SVOBODA; Jan BALVAN; Tomáš VIČAR; Martina RAUDENSKÁ et. al.Základní údaje
Originální název
Broad-Spectrum Antiviral Activity of 3'-Deoxy-3'Fluoroadenosine against Emerging Flaviviruses
Autoři
EYER, Luděk; Pavel SVOBODA; Jan BALVAN; Tomáš VIČAR; Martina RAUDENSKÁ ORCID; Michal ŠTEFÁNIK; Jan HAVIERNIK; Ivana HUVAROVÁ; Petra STRAKOVÁ; Ivo RUDOLF; Zdeněk HUBÁLEK; Katherine SELEY-RADTKE; Erik DE CLERCQ a Daniel RŮŽEK
Vydání
Antimicrobial Agents and Chemotherapy, Washington, AMER SOC MICROBIOLOG, 2021, 0066-4804
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10606 Microbiology
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.938
Kód RIV
RIV/00216224:14110/21:00121049
Organizační jednotka
Lékařská fakulta
UT WoS
000609954100018
EID Scopus
2-s2.0-85099983413
Klíčová slova anglicky
nucleoside analogue; 39-deoxy-39-fluoroadenosine; flavivirus; tick-borne encephalitis virus; antiviral activity; cytotoxicity; mouse model
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 15. 2. 2022 13:40, Mgr. Tereza Miškechová
Anotace
V originále
Emerging flaviviruses are causative agents of severe and life-threatening diseases, against which no approved therapies are available. Among the nucleoside analogues, which represent a promising group of potentially therapeutic compounds, fluorine-substituted nucleosides are characterized by unique structural and functional properties. Despite having first been synthesized almost 5 decades ago, they still offer new therapeutic opportunities as inhibitors of essential viral or cellular enzymes active in nucleic acid replication/transcription or nucleoside/nucleotide metabolism. Here, we report evaluation of the antiflaviviral activity of 28 nucleoside analogues, each modified with a fluoro substituent at different positions of the ribose ring and/or heterocyclic nucleobase. Our antiviral screening revealed that 3'deoxy-3'-fluoroadenosine exerted a low-micromolar antiviral effect against tick-borne encephalitis virus (TBEV), Zika virus, and West Nile virus (WNV) (EC50 values from 1.1 +/- 0.1 mu M to 4.7 +/- 1.5 mu M), which was manifested in host cell lines of neural and extraneural origin. The compound did not display any measurable cytotoxicity up to concentrations of 25 mu M but had an observable cytostatic effect, resulting in suppression of cell proliferation at concentrations of > 12.5 mu M. Novel approaches based on quantitative phase imaging using holographic microscopy were developed for advanced characterization of antiviral and cytotoxic profiles of 3'-deoxy-3'-fluoroadenosine in vitro. In addition to its antiviral activity in cell cultures, 3'-deoxy-3'-fluoroadenosine was active in vivo in mouse models of TBEV and WNV infection. Our results demonstrate that fluoro-modified nucleosides represent a group of bioactive molecules with excellent potential to serve as prospective broad-spectrum antivirals in antiviral research and drug development.