Sulfiredoxin-1 accelerates erastin-induced ferroptosis in HT-22 hippocampal neurons by driving heme Oxygenase-1 activation
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View abstract on PubMed
Summary
This summary is machine-generated.Sulfiredoxin-1 (SRXN1) promotes ferroptosis, a cell death linked to neurological diseases, by activating Heme Oxygenase-1 (HO-1) and autophagy. Inhibiting SRXN1 or HO-1 reduces ferroptosis, offering a potential therapeutic target.
Area Of Science
- Biochemistry
- Cell Biology
- Neuroscience
Background
- Ferroptosis is a non-apoptotic cell death pathway implicated in neurological disorders.
- The precise molecular mechanisms driving ferroptosis remain largely unknown.
- Identifying key regulators of ferroptosis is crucial for developing targeted therapies.
Purpose Of The Study
- To investigate the role of sulfiredoxin-1 (SRXN1) in erastin-induced ferroptosis in HT-22 mouse hippocampal cells.
- To elucidate the molecular pathways through which SRXN1 influences ferroptosis.
- To explore the potential of targeting SRXN1 for therapeutic intervention in neurodegenerative diseases.
Main Methods
- TMT-based proteomics to analyze protein expression changes in erastin-treated cells.
- SRXN1 knockdown using gene silencing techniques.
- Measurement of intracellular iron (Fe2+) levels and reactive oxygen species (ROS).
- Assessment of Heme Oxygenase-1 (HO-1) activation and autophagy modulation.
Main Results
- SRXN1 expression significantly increased in erastin-exposed HT-22 cells.
- SRXN1 knockdown ameliorated erastin-induced ferroptosis, reducing Fe2+ and ROS levels.
- SRXN1-induced ferroptosis was dependent on the activation of HO-1 and involved autophagy.
- Inhibition of SRXN1 or HO-1 alleviated ferroptosis and associated autophagy.
Conclusions
- SRXN1 acts as a critical regulator enhancing ferroptosis susceptibility in neuronal cells.
- SRXN1 activates HO-1, leading to increased ROS and Fe2+ accumulation, thereby promoting ferroptosis.
- The SRXN1-HO-1-autophagy pathway represents a novel mechanism in ferroptosis and a potential therapeutic target for neurodegenerative diseases.
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