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Blood transcriptome analysis: Ferroptosis and potential inflammatory pathways in post-traumatic stress disorder
Jie Zhu1, Ye Zhang1, Rong Ren1
1Sleep Medicine Center, Department of Respiratory and Critical Care Medicine, Mental Health Center, West China Hospital, Sichuan University, Chengdu, China.
Frontiers in Psychiatry
|October 24, 2022
Summary
Ferroptosis, a cell death process linked to oxidative stress, may play a role in post-traumatic stress disorder (PTSD). This study identified key ferroptosis-related genes (FRGs) that could help predict PTSD and understand its immune system changes.
Area of Science:
- Immunology
- Genetics
- Cell Biology
Background:
- Post-traumatic stress disorder (PTSD) is associated with significant immune system dysregulation.
- Ferroptosis, a form of regulated cell death driven by iron and oxidative stress, has not been extensively studied in the context of PTSD.
Purpose of the Study:
- To investigate the potential role of ferroptosis in the pathogenesis of PTSD.
- To identify ferroptosis-related genes (FRGs) associated with PTSD and develop a predictive model.
Main Methods:
- Comprehensive analysis of six independent peripheral blood transcriptome datasets from PTSD patients and controls.
- Identification of differentially expressed genes (DEGs) and cross-matching with 29 known FRGs.
- Application of Weighted Gene Co-expression Network Analysis (WGCNA), XGBoost, and LASSO Cox regression for model construction.
- Utilized ssGSEA and CIBERSORT to assess immune cell infiltration and function.
Main Results:
- Three key FRGs (ACSL4, ACO1, GSS) were identified and formed the basis of a predictive model for PTSD.
- The developed model demonstrated significant risk prediction ability, validated by ROC curve analysis.
- Analysis revealed alterations in cellular immunity and antigen presentation in PTSD, correlated with the FRG-based model.
Conclusions:
- Ferroptosis is implicated in altering immune status within PTSD.
- These findings suggest ferroptosis may be involved in PTSD development and offer potential therapeutic biomarkers.
- Further research into ferroptosis mechanisms could elucidate PTSD pathogenesis and treatment strategies.
