FAHD1 prevents neuronal ferroptosis by modulating R-loop and the cGAS-STING pathway

Area of Science:

• Neuroscience
• Cell Biology
• Biochemistry

Background:

• Ferroptosis, a form of iron-dependent cell death, is implicated in neurological disorders like neurodegenerative diseases and CNS injuries.
• Current therapeutic strategies for these conditions are often ineffective due to complex pathophysiology.
• The precise mechanisms driving neuronal ferroptosis remain incompletely understood.

Purpose of the Study:

• To investigate the role of FAHD1 (Fatty Acid Hydroxylase Domain Containing 1) in neuronal ferroptosis.
• To explore FAHD1's potential as a therapeutic target for neurological conditions.

Main Methods:

• Bioinformatic analyses and cellular experiments were conducted.
• Immunofluorescence, dot blot, and western blotting assessed FAHD1's effects on R-loop formation and cGAS-STING pathway proteins.

Main Results:

• FAHD1 expression was significantly downregulated in primary neurons under oxidative stress.
• Ferroptosis was identified as a key mechanism in oxidative stress-induced neuronal damage.
• FAHD1 overexpression reduced reactive oxygen species, R-loop formation, and preserved genomic stability, suppressing ferroptosis via cGAS-STING pathway inhibition.

Conclusions:

• FAHD1 acts as a critical regulator of neuronal ferroptosis.
• FAHD1 presents a potential therapeutic target for neurodegenerative diseases and CNS injuries.