srebp2

Cholesterol is the primary sterol in mammals, accounting for approximately 20–25% of the plasma membrane structure. It plays a key role in regulating membrane fluidity, permeability, and protein function. As an endogenous agonist of estrogen-related receptor α (ERRα), cholesterol is widely involved in metabolic regulation and serves as a precursor for the synthesis of hormones and bile acids. It is commonly used in experimental models of hyperlipidemia.

Hexacosanol activates AMPK and hepatic autophagy and inhibits SREBP2, resulting in hypocholesterolemic activities and improvement of hepatic steatosis.

PCSK9-IN-9, a natural isocoumarin, inhibits proprotein convertase subtilisin-kexin type 9 (PCSK9), IDOL, and SREBP2 mRNA expression, demonstrating specificity by inhibiting PCSK9 with an IC50 value of 11.9 μM [1].

5-O-Methylembelin is a natural isocoumarin that inhibits PCSK9, low-density lipoprotein receptor (IDOL), and sterol regulatory element binding protein 2 (SREBP2) mRNA expression [1].