Scientists led by Prof David Ginsburg of the University of Michigan’s Howard Hughes Medical Institute inhibited the action of a gene responsible for transporting a protein that interferes with the ability of the liver to remove cholesterol from the blood in mice. Trapping the destructive protein where it couldn’t harm receptors responsible for removing cholesterol preserved the liver cells’ capacity to clear plasma cholesterol from the blood, but did not appear to otherwise affect the health of the mice.

In the research, scientists found that mice with an inactive SEC24A gene could develop normally. However, their plasma cholesterol levels were reduced by 45 percent because vesicles from liver cells were not able to recruit and transport a critical regulator of blood cholesterol levels called proprotein convertase subtilisin/kexin type 9 (PCSK9).

PCSK9 is a secretory protein that destroys the liver cells’ receptors of low-density lipoprotein (LDL, the so-called ‘bad cholesterol), and prevents the cells from removing the LDL.

Study Finds New Way to Clear Cholesterol from Blood | Medicine | Sci-News.com