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Beck, Simon; Henß, Lisa; Weidner, Tatjana; Herrmann, Jennifer; Müller, Rolf; Chao, Yu-Kai; Grimm, Christian; Weber, Christopher; Sliva, Katja; Schnierle, Barbara S. (2016): Identification of entry inhibitors of Ebola virus pseudotyped vectors from a myxobacterial compound library. In: Antiviral Research, Vol. 132: pp. 85-91
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Myxobacteria produce secondary metabolites many of which were described to have various biological effects including anti-fungal, anti-bacterial and anti-viral activity. The majority of these metabolites are novel scaffolds with unique modes-of-action and hence might be potential leads for drug discovery. Here, we tested a myxobacterial natural product library for compounds with inhibitory activity against Ebola virus (EBOV). The assay was performed with a surrogate system using Ebola envelope glycoprotein (GP) pseudotyped lentiviral vectors. EBOV specificity was proven by counter-screening with vesicular stomatitis virus G protein pseudotyped vectors. Two compounds were identified that preferentially inhibited EBOV GP mediated cell entry: Chondramides that act on the actin skeleton but might be too toxic and noricumazole A, a potassium channel inhibitor, which might constitute a novel pathway to inhibit Ebola virus cell entry. (C) 2016 Elsevier B.V. All rights reserved.