Researchers identified a critical protein pathway that helps breast cancer cells survive and spread. The study found that Thymosin β4 (Tβ4) protein is overproduced in breast cancer tissues and drives tumor progression by regulating SLC7A11, a transporter that helps cells resist ferroptosis - a form of programmed cell death. When Tβ4 levels are high, cancer cells become more aggressive, spreading faster and resisting treatment. The protein works by boosting glutathione production and preventing lipid damage that would normally kill cancer cells. This discovery reveals why some breast cancers are particularly resistant to therapy and suggests new treatment approaches targeting this survival pathway.
