Structure–Activity Relationships for Side Chain Oxysterol Agonists of the Hedgehog Signaling Pathway
作者:Audrey Corman、Albert M. DeBerardinis、M. Kyle Hadden
DOI:10.1021/ml300192k
日期:2012.10.11
Oxysterols (OHCs) are byproducts of cholesterol oxidation that are known to activate the Hedeghog (Hh) signaling pathway. While OHCs that incorporate hydroxyl groups throughout the scaffold are known, those that act as agonists of Hh signaling primarily contain a single hydroxyl on the alkyl sidechain. We sought to further explore how sidechain hydroxylation patterns affect oxysterol-mediated Hh
Cholesterol Hydroperoxides as Substrates for Cholesterol-Metabolizing Cytochrome P450 Enzymes and Alternative Sources of 25-Hydroxycholesterol and other Oxysterols
作者:Johan E. van Lier、Natalia Mast、Irina A. Pikuleva
DOI:10.1002/anie.201505002
日期:2015.9.14
the primary autoxidation products of cholesterol, namely 25‐ and 20ξ‐hydroperoxides, with the four principal cholesterol‐metabolizing cytochromeP450enzymes is reported. Addition of cholesterol 25‐hydroperoxide to the enzymes CYP27A1 and CYP11A1 induced well‐defined spectral changes while generating 25‐hydroxycholesterol as the major product. The 20ξ‐hydroperoxides induced spectral shifts in CYP27A1