Discovery of anti-SARS-CoV-2 secondary metabolites from the heartwood of Pterocarpus santalinus using multi-informative molecular networking.

Autor: Wasilewicz A; Division of Pharmacognosy, Department of Pharmaceutical Sciences, Faculty of Life Sciences, University of Vienna, Vienna, Austria.; Vienna Doctoral School of Pharmaceutical, Nutritional, Sport Sciences, University of Vienna, Vienna, Austria., Zwirchmayr J; Division of Pharmacognosy, Department of Pharmaceutical Sciences, Faculty of Life Sciences, University of Vienna, Vienna, Austria., Kirchweger B; Division of Pharmacognosy, Department of Pharmaceutical Sciences, Faculty of Life Sciences, University of Vienna, Vienna, Austria., Bojkova D; Institute of Medical Virology, University Hospital Frankfurt, Frankfurt am Main, Germany., Cinatl J Jr; Institute of Medical Virology, University Hospital Frankfurt, Frankfurt am Main, Germany., Rabenau HF; Institute of Medical Virology, University Hospital Frankfurt, Frankfurt am Main, Germany., Rollinger JM; Division of Pharmacognosy, Department of Pharmaceutical Sciences, Faculty of Life Sciences, University of Vienna, Vienna, Austria., Beniddir MA; Équipe Chimie des Substances Naturelles, BioCIS, Centre National de la Recherche Scientifique (CNRS), Université Paris-Saclay, Orsay, France., Grienke U; Division of Pharmacognosy, Department of Pharmaceutical Sciences, Faculty of Life Sciences, University of Vienna, Vienna, Austria.
Jazyk: angličtina
Zdroj: Frontiers in molecular biosciences [Front Mol Biosci] 2023 Jun 06; Vol. 10, pp. 1202394. Date of Electronic Publication: 2023 Jun 06 (Print Publication: 2023).
DOI: 10.3389/fmolb.2023.1202394
Abstrakt: A pigment-depleted extract from the heartwood of Pterocarpus santalinus L. f. (PS-DE) showed promising anti-SARS-CoV-2 activity with an IC 50 of 29.9 μg/mL in Caco-2-F03 cells. To determine the potential active constituents within the extract prior to isolation, multi-informative molecular network (MN) was applied. Therefore, the extract was separated by high-performance counter-current chromatography (HPCCC) into 11 fractions which were subsequently tested for anti-SARS-CoV-2 activity and analysed by UPLC-tandem mass spectrometry (MS 2 ). The resulting MN combines the bioactivity data of the fractions with the MS 2 data. The MN analysis led to the targeted isolation of seven compounds including one pterocarpan (7) reported for the first time as constituent of P. santalinus and four so far undescribed natural products (NPs) that belong to the compound classes of arylpropanes (9) , isoflavanones (10) coumestans (16) and 3-arylcoumarins (17) , respectively. In total, 15 constituents from the heartwood of P. santalinus and one synthetic isoflavonoid that is structurally related to the natural metabolites were tested for anti-SARS-CoV-2 activity. Thereby, the two pterocarpans (-)-homopterocarpin (5) and (-)-medicarpin (2) , the stilbene (E) -pterostilbene (1) and the isoflavonoid 7-O-methylgenistein (11) showed a distinct antiviral activity with IC 50 values of 17.2, 33.4, 34.7, and 37.9 µM, respectively, and no cytotoxic effects against Caco-2-F03 cells (CC 50 > 100 µM). In addition, a structure-activity relationship (SAR) was proposed indicating structural requirements of pterocarpans for anti-SARS-CoV-2 activity. The herein presented results support the implementation of multi-informative molecular networks as powerful tool for dereplication and targeted isolation of bioactive NPs.
Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
(Copyright © 2023 Wasilewicz, Zwirchmayr, Kirchweger, Bojkova, Cinatl, Rabenau, Rollinger, Beniddir and Grienke.)
Databáze: MEDLINE
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