Study of the effects of Resveratrol on an aggressive type of breast cancer called

Summary of the article studying the effects of Resveratrol on an aggressive type of breast cancer called

Triple-negative breast cancer (TNBC), which is a type that is difficult to treat Because it lacks ER, PR, and HER2 receptors, it cannot use hormones or anti-HER2 drugs.

The essence of the research:

Researchers found that resveratrol can induce TNBC cancer cells to die through a process called ferroptosis, which is “cell death from lipid and iron damage,” which is different from traditional apoptosis.

The important mechanism is that Resveratrol causes the GPX4 protein to be destroyed.

What is GPX4?

Glutathione Peroxidase 4 or GPX4 is an important enzyme that protects cells from oxidation and prevents ferroptosis.

TNBC cancer cells often have high levels of GPX4 to help the cells survive oxidative stress.

This research found that Resveratrol:

- Increases ubiquitination of GPX4

- causes GPX4 to be degraded

- Resulting in cancer cells losing their defense against free radicals.

- Accumulation of ROS and lipid peroxidation occurs.

- Leads to ferroptosis and death of cancer cells.

Molecular mechanism

Resveratrol works through the following routes:

ERK1/2 → SGK1 → NEDD4L → GPX4

By: Resveratrol inhibits ERK1/2 and SGK1.

- make protein

NEDD4L

work more

- NEDD4L binds and attaches ubiquitin to GPX4.

- GPX4 is destroyed by the proteasome system.

- Cell enters ferroptosis.

What was found in the experiment

Both in cells and in mice, Resveratrol was found to:

- Reduce the number of cancer cells.

- Reduce cell movement and spread.

- Reduce cancer colony formation

- Increases ROS and lipid peroxidation.

- Increases iron levels in cells

- Reduce glutathione (GSH)

- Causes damage to the mitochondria.

- Reduce the size of cancer tumors in laboratory animals

The importance of research

This work suggests that resveratrol may be a “new approach” to treating TNBC, using ferroptosis induction instead of traditional cell killing.

Highlights are:

- Target GPX4, which is TNBC's main weakness.

- Helps reduce drug resistance problems

- Has the potential to be used in conjunction with chemotherapy or targeted therapy.