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Molecular dynamics-derived pharmacophore model explaining the nonselective aspect of KV10.1 pore blockers [Elektronski vir]Toplak, Žan ...The KV10.1 voltage-gated potassium channel is highly expressed in 70% of tumors, and thus represents a promising target for anticancer drug discovery. However, only a few ligands are known to inhibit ... KV10.1, and almost all also inhibit the very similar cardiac hERG channel, which can lead to undesirable side-effects. In the absence of the structure of the KV10.1%inhibitor complex, there remains the need for new strategies to identify selective KV10.1 inhibitors and to understand the binding modes of the known KV10.1 inhibitors. To investigate these binding modes in the central cavity of KV10.1, a unique approach was used that allows derivation and analysis of ligand-protein interactions from molecular dynamics trajectories through pharmacophore modeling. The final molecular dynamics-derived structure-based pharmacophore model for the simulated KV10.1-ligand complexes describes the necessary pharmacophore features for KV10.1 inhibition and is highly similar to the previously reported ligand-based hERG pharmacophore model used to explain the nonselectivity of KV10.1 pore blockers. Moreover, analysis of the molecular dynamics trajectories revealed disruption of the Pi Pi network of aromatic residues F359, Y464, and F468 of KV10.1, which has been reported to be important for binding of various ligands for both KV10.1 and hERG channels. These data indicate that targeting the KV10.1 channel pore is also likely to result in undesired hERG inhibition, and other potential binding sites should be explored to develop true KV10.1-selective inhibitors as new anticancer agents.Source: International journal of molecular sciences [Elektronski vir]. - ISSN 1422-0067 (Vol. 22, no. 16, 2021, str. 1-24)Type of material - e-articlePublish date - 2021Language - englishCOBISS.SI-ID - 73744899
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Toplak, Žan | 52375 |
Merzel, Franci | 13627 |
Pardo A., Luis | |
Peterlin-Mašič, Lucija | 19317 |
Tomašič, Tihomir | 28334 |
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