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Ntountaniotis, Dimitrios; Kellici, Tahsin; Tzakos, Andreas; Kolokotroni, Pinelopi; Tselios, Theodore; Becker-Baldus, Johanna; Glaubitz, Clemens; Lin, Sonyan; Makriyannis, Alexandros; Mavromoustakos, Thomas
Biochimica et biophysica acta, 10/2014, Letnik: 1838, Številka: 10Journal Article
ΑΤ1 receptor (AT1R) antagonists exert their antihypertensive effects by preventing the vasoconstrictive hormone AngII to bind to the AT1 receptor. It has been proposed that these biological effects are mediated through a two-step mechanism reaction. In the first step, they are incorporated in the core of the lipid bilayers and in the second step they reach the active site of the receptor through lateral diffusion. In this model, drug/membrane interactions are key elements for the drugs achieving inhibition at the AT1 receptor. In this work, the interactions of the prodrug candesartan cilexetil (TCV-116) with lipid bilayers are studied at molecular detail. Solid-state 13C-CP/MAS, 2D 1H-1H NOESY NMR spectroscopy and in silico calculations are used. TCV-116 and olmesartan, another drug which acts as an AT1R antagonist are compared for their dynamic effects in lipid bilayers using solid-state 2H-NMR. We find a similar localization of TCV-116 compared to other AT1 antagonists in the intermediate polar region. In addition, we can identify specific local interactions. These interactions may be associated in part with the discrete pharmacological profiles observed for different antagonists. Display omitted •Comparative dynamic effects of TCV-116 and olmesartan•Information for topography of TCV-116 and olmesartan in phospholipids•Drug/membrane interactions (use of solid state NMR, in silico calculations)•Cholesterol appears to modify and compete with the properties of AT1R antagonists.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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