Inhibition of lysyl oxidase by pharmacological intervention and genetic manipulation alleviates epilepsy-associated...

Area of Science:

• Neuroscience
• Cell Biology
• Pathology

Background:

• Epilepsy-associated cognitive disorder (ECD) is a common complication of epilepsy with unknown causes.
• Lysyl oxidase (Lox) is implicated in ferroptosis, a form of programmed cell death, and its role in ECD is unexplored.

Purpose of the Study:

• To investigate the role of Lox-mediated ferroptosis in the pathogenesis of ECD.
• To evaluate the therapeutic potential of targeting Lox in ECD.

Main Methods:

• Established a kainic acid (KA)-induced mouse model of ECD.
• Administered Lox inhibitor BAPN or generated hippocampal-specific Lox knockout mice.
• Assessed cognitive function using novel object recognition (NOR) and Morris water maze (MWM) tests.
• Analyzed protein expression of Lox, 4-HNE, and phosphorylated CREB.

Main Results:

• KA-induced ECD mice exhibited increased Lox and ferroptosis markers (4-HNE).
• BAPN treatment (100 mg/kg) and hippocampal Lox deficiency significantly improved cognitive performance in ECD mice.
• Lox inhibition or deletion ameliorated ECD-related cognitive deficits.

Conclusions:

• Lox-mediated ferroptosis is activated in ECD and contributes to cognitive impairment.
• Targeting Lox, through pharmacological inhibition or genetic manipulation, shows promise for treating ECD.