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 (203 Česká republika, garant), Pavel SVOBODA (203 Česká republika), Jan BALVAN (203 Česká republika, domácí), Tomáš VIČAR (203 Česká republika, domácí), Martina RAUDENSKÁ (203 Česká republika, domácí), Michal ŠTEFÁNIK (203 Česká republika), Jan HAVIERNIK (203 Česká republika, domácí), Ivana HUVAROVÁ (203 Česká republika), Petra STRAKOVÁ (203 Česká republika), Ivo RUDOLF (203 Česká republika, domácí), Zdeněk HUBÁLEK (203 Česká republika), Katherine SELEY-RADTKE (840 Spojené státy), Erik DE CLERCQ (56 Belgie) a Daniel RŮŽEK (203 Česká republika)
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
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.