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FUNDC1 Mediated Mitophagy in Epileptic Hippocampal Neuronal Injury Induced by Magnesium-Free Fluid
Yinna Zhang1, Yajun Lian2, Xiaolei Lian3
1Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China.
Abstract:
Mitophagy plays a key role in epileptic neuronal injury, and recent studies have shown that FUNDC1 plays an important role in regulating mitophagy. However, the specific effect of FUNDC1 on neuronal damage in epilepsy is unknown. In this study, we investigated the role of FUNDC1 in mitophagy and neuronal apoptosis using a hippocampal neuronal culture model of acquired epilepsy (AE) in vitro. We found that mitophagy levels were significantly increased in this model, as indicated by elevated LC3A/B ratios. FUNDC1 overexpression using lentiviral vectors enhanced mitophagy, whereas FUNDC1 down-regulation using lentiviral vectors impaired this process. Overexpression of FUNDC1 significantly decreased AE-induced superoxide anion, enhanced cell viability, reduced oxidative stress, and reduced neuronal apoptosis in epileptic hippocampus, while FUNDC1 down-regulation caused the opposite effect. In conclusion, we demonstrated that FUNDC1 is an important modulator of AE-induced neuronal apoptosis by controlling mitophagy function.
Insights
FUNDC1 regulates mitophagy in acquired epilepsy (AE). Overexpressing FUNDC1 protects against neuronal injury by enhancing mitophagy, while reducing it worsens damage. This highlights FUNDC1
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Mitophagy is crucial in epileptic neuronal injury.
- FUNDC1 is implicated in mitophagy regulation.
- The specific role of FUNDC1 in epilepsy-induced neuronal damage remains unclear.
Purpose of the Study:
- To investigate the role of FUNDC1 in mitophagy and neuronal apoptosis in a hippocampal neuronal culture model of acquired epilepsy (AE).
Main Methods:
- Utilized an in vitro hippocampal neuronal culture model of acquired epilepsy.
- Manipulated FUNDC1 levels using lentiviral vectors for overexpression and down-regulation.
- Assessed mitophagy levels via LC3A/B ratios.
- Measured superoxide anion, cell viability, oxidative stress, and neuronal apoptosis.
Main Results:
- Mitophagy levels were significantly increased in the AE model.
- FUNDC1 overexpression enhanced mitophagy, decreased superoxide anion and oxidative stress, and reduced neuronal apoptosis.
- FUNDC1 down-regulation impaired mitophagy and exacerbated neuronal damage.
Conclusions:
- FUNDC1 is a key regulator of mitophagy in the context of acquired epilepsy.
- FUNDC1 plays a protective role against AE-induced neuronal apoptosis by modulating mitophagy.
- Targeting FUNDC1 may offer therapeutic potential for epilepsy treatment.
