Abstract:
:Low-density lipoprotein receptor (LDLR) mediates hepatic clearance of plasma cholesterol; proprotein convertase subtilisin/kexin 9 (PCSK9) opposes this clearance by promoting LDLR degradation. The plant flavonoid quercetin-3-β-d-glucoside (Q3G) has been shown to reduce hypercholesterolemia in experimental animals. Here, we examined how it affects LDLR and PCSK9 expression as well as LDL uptake by human Huh7 hepatocytes. At low micromolar concentrations, Q3G increased LDLR expression, reduced PCSK9 secretion, and stimulated LDL uptake. It also diminished intracellular sortilin, a sorting receptor known to facilitate PCSK9 secretion. Thus, as an LDLR inducer and a PCSK9 anti-secretagogue, Q3G may represent an effective anti-cholesterolemic agent.
journal_name
FEBS Open Biojournal_title
FEBS open bioauthors
Mbikay M,Sirois F,Simoes S,Mayne J,Chrétien Mdoi
10.1016/j.fob.2014.08.003subject
Has Abstractpub_date
2014-09-02 00:00:00pages
755-62issn
2211-5463pii
S2211-5463(14)00077-1journal_volume
4pub_type
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