Erythrosin B is a potent and broad-spectrum orthosteric inhibitor of the flavivirus NS2B-NS3 protease.

Erythrosin B is a potent and broad-spectrum orthosteric inhibitor of the flavivirus NS2B-NS3 protease.
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DOI:
10.1016/j.antiviral.2017.12.018
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发表时间:
2018-03
期刊:
影响因子:
7.6
通讯作者:
Li H
Li H
中科院分区:
医学2区
文献类型:
--
作者:
Li Z;Sakamuru S;Huang R;Brecher M;Koetzner CA;Zhang J;Chen H;Qin CF;Zhang QY;Zhou J;Kramer LD;Xia M;Li H

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许多黄病毒,如寨卡病毒(ZIKV)、登革热病毒(DENV 1 -4)和黄热病病毒(YFV),是重要的人类病原体。ZIKV是一种新出现的蚊媒黄病毒,感染ZIKV与新生儿小头畸形和成人格林-巴利综合征及其他并发症的风险增加有关。目前,对于任何黄病毒感染都不存在特异性治疗。在这项研究中,我们发现赤藓红B,一种FDA批准的食品添加剂,是一种有效的黄病毒抑制剂,包括ZIKV和DENV 2。发现赤藓红B通过非竞争性机制以低微摩尔范围的IC 50抑制DENV 2和ZIKV NS 2B-NS 3蛋白酶。赤藓红B可以显著降低代表性黄病毒、DENV 2、ZIKV、YFV、JEV和WNV的滴度,具有微摩尔效力和优异的细胞毒性特征。赤藓红B还可以抑制ZIKV相关的人胎盘和神经祖细胞中的ZIKV复制。作为妊娠类别B食品添加剂,赤藓红B可能代表用于管理ZIKV和其他黄病毒感染的有前景且容易开发的疗法。
Many flaviviruses, such as Zika virus (ZIKV), Dengue virus (DENV1-4) and yellow fever virus (YFV), are significant human pathogens. Infection with ZIKV, an emerging mosquito-borne flavivirus, is associated with increased risk of microcephaly in newborns and Guillain-Barré syndrome and other complications in adults. Currently, specific therapy does not exist for any flavivirus infections. In this study, we found that erythrosin B, an FDA-approved food additive, is a potent inhibitor for flaviviruses, including ZIKV and DENV2. Erythrosin B was found to inhibit the DENV2 and ZIKV NS2B-NS3 proteases with IC50 in low micromolar range, via a non-competitive mechanism. Erythrosin B can significantly reduce titers of representative flaviviruses, DENV2, ZIKV, YFV, JEV, and WNV, with micromolar potency and with excellent cytotoxicity profile. Erythrosin B can also inhibit ZIKV replication in ZIKV-relevant human placental and neural progenitor cells. As a pregnancy category B food additive, erythrosin B may represent a promising and easily developed therapy for management of infections by ZIKV and other flaviviruses.
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