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@ARTICLE{Eberle:908879,
author = {Eberle, Raphael J. and Olivier, Danilo S. and Amaral,
Marcos S. and Pacca, Carolina C. and Nogueira, Mauricio L.
and Arni, Raghuvir K. and Willbold, Dieter and Coronado,
Monika A.},
title = {{R}iboflavin, a {P}otent {N}europrotective {V}itamin:
{F}ocus on {F}lavivirus and {A}lphavirus {P}roteases},
journal = {Microorganisms},
volume = {10},
number = {7},
issn = {2076-2607},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2022-02893},
pages = {1331 -},
year = {2022},
abstract = {Several neurotropic viruses are members of the flavivirus
and alphavirus families. Infections caused by these viruses
may cause long-term neurological sequelae in humans. The
continuous emergence of infections caused by viruses around
the world, such as the chikungunya virus (CHIKV) (Alphavirus
genus), the zika virus (ZIKV) and the yellow fever virus
(YFV) (both of the Flavivirus genus), warrants the
development of new strategies to combat them. Our study
demonstrates the inhibitory potential of the water-soluble
vitamin riboflavin against NS2B/NS3pro of ZIKV and YFV and
nsP2pro of CHIKV. Riboflavin presents a competitive
inhibition mode with IC50 values in the medium µM range of
79.4 ± 5.0 µM for ZIKV NS2B/NS3pro and 45.7 ± 2.9 μM for
YFV NS2B/NS3pro. Against CHIKV nsP2pro, the vitamin showed a
very strong effect (93 ± 5.7 nM). The determined
dissociation constants (KD) are significantly below the
threshold value of 30 µM. The ligand binding increases the
thermal stability between 4 °C and 8 °C. Unexpectedly,
riboflavin showed inhibiting activity against another viral
protein; the molecule was also able to inhibit the viral
entry of CHIKV. Molecular dynamics simulations indicated
great stability of riboflavin in the protease active site,
which validates the repurposing of riboflavin as a promising
molecule in drug development against the viruses presented
h},
cin = {IBI-7},
ddc = {570},
cid = {I:(DE-Juel1)IBI-7-20200312},
pnm = {5244 - Information Processing in Neuronal Networks
(POF4-524) / DFG project 267205415 - SFB 1208: Identität
und Dynamik von Membransystemen - von Molekülen bis zu
zellulären Funktionen (267205415)},
pid = {G:(DE-HGF)POF4-5244 / G:(GEPRIS)267205415},
typ = {PUB:(DE-HGF)16},
pubmed = {35889050},
UT = {WOS:000832457100001},
doi = {10.3390/microorganisms10071331},
url = {https://juser.fz-juelich.de/record/908879},
}