Dietary curcumin prevents hypercholesterolemia by inhibiting the transcriptional activity of SREBP-2 and HNF1α and reducing intestinal and hepatic NPC1L1 expression in high-fat diet-fed hamsters.

ABSTRACT:

Background

Niemann-Pick C1-like 1 (NPC1L1) mediates cholesterol absorption and plays major roles in cholesterol homeostasis. Our previous study showed that curcumin reduced NPC1L1 expression and cholesterol absorption in Caco-2 cells. This study aimed to investigate whether curcumin could prevent hypercholesterolemia by transcriptionally suppressing intestinal and hepatic NPC1L1 expression via inhibition of sterol regulatory element binding protein-2 (SREBP-2) and hepatocyte nuclear factor 1α (HNF1α) transcriptional activity.

Methods

Male hamsters were fed a high-fat diet (HFD) with or without 0.1% w/w curcumin for 12 weeks. Additionally, Caco-2 cells and HepG2 cells were treated with 6, 12, 25, or 50 µmol/L curcumin for 24 h. The cholesterol absorption was determined with 2

SUBMITTER: Cao Z 

PROVIDER: S-EPMC12570724 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature