J 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.