Topic: Health

Researchers at UT Southwestern Medical Center found a protein called HELZ2 that helps control how much cholesterol is released into the bloodstream. This discovery could lead to new treatments for heart disease and fatty liver disease.

Imagine your body as a complex machine with many moving parts. One of these parts is your liver, which plays a crucial role in removing bad cholesterol from your blood. A team of scientists at UT Southwestern Medical Center has discovered a hidden switch that helps control how much cholesterol is released into the bloodstream. This switch is called HELZ2 and it's a protein that acts like a dial between your liver and bloodstream.

The researchers found that when HELZ2 activity rises, it shortens the lifespan of a gene called APOB inside liver cells. This means fewer cholesterol-carrying particles enter the blood, which could help reduce the risk of heart disease and fatty liver disease.

To make this discovery, the scientists used a special genetic screening system developed by Nobel Prize winner Bruce Beutler. They studied mice with unusual fat buildup in their livers and found that some had a gain-of-function mutation that increased HELZ2 activity and reduced APOB mRNA stability in the liver.

Why It Matters

This discovery is important because it could lead to new treatments for heart disease and fatty liver disease, which are major health concerns in India. Understanding how our bodies work can help us develop new ways to prevent and treat these diseases.

Key Facts

• Scientists at UT Southwestern Medical Center discovered a protein called HELZ2 that helps control how much cholesterol is released into the bloodstream.
• HELZ2 works by shortening the lifespan of APOB mRNA inside liver cells, which reduces the production of apoB proteins and fewer cholesterol-carrying particles enter the blood.
• The researchers used a special genetic screening system developed by Nobel Prize winner Bruce Beutler to make this discovery.
• Mice with a gain-of-function mutation in HELZ2 had lower levels of cholesterol-carrying particles in their bloodstream and were protected against atherosclerosis, the artery clogging disease linked to heart attacks and strokes.
• The discovery could lead to new treatments for heart disease and fatty liver disease.

Key Terms

APOB

A gene required to produce apoB proteins that form lipoproteins, which transport cholesterol and fats through the body

Implications

This discovery is important because it could lead to new treatments for heart disease and fatty liver disease, which are major health concerns in India. Understanding how our bodies work can help us develop new ways to prevent and treat these diseases.