NRF1 Regulates the Epithelial Mesenchymal Transition of Breast Cancer by Modulating ROS Homeostasis.

Area of Science:

• Cell Biology
• Molecular Biology
• Cancer Research

Background:

• Nuclear respiratory factor 1 (NRF1) is crucial for mitochondrial biogenesis and energy metabolism.
• The precise role of NRF1 in anoikis and epithelial-mesenchymal transition (EMT) is not fully understood.

Purpose of the Study:

• To elucidate the mechanism by which NRF1 influences anoikis and EMT.
• To investigate the relationship between NRF1, mitochondrial function, and reactive oxygen species (ROS) in cancer cells.

Main Methods:

• Transcriptome sequencing was employed to identify the molecular mechanisms.
• Mitochondrial function, including oxidative phosphorylation (OXPHOS) and ATP generation, was assessed.
• The impact of NRF1 on ROS levels and ROS-scavenging enzymes was examined.

Main Results:

• Upregulated NRF1 expression enhanced mitochondrial OXPHOS and ATP production.
• NRF1 influences ROS generation during OXPHOS and upregulates ROS-scavenging enzymes.
• NRF1 maintains low exogenous ROS levels, promoting anoikis resistance and EMT in breast cancer cells.

Conclusions:

• NRF1 plays a significant role in promoting anoikis resistance and EMT through modulation of mitochondrial activity and ROS homeostasis.
• NRF1 represents a potential therapeutic target for breast cancer treatment.