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Updated: Jan 7, 2026
Neural Stem Cell Transplantation in Experimental Contusive Model of Spinal Cord Injury
Published on: December 17, 2014
Integrated Bioinformatic Analysis and Experimental Validation for Crosstalk Among Various Forms of Cell Death in
Kuileung Tong1, Jianfeng Li2, Shan Li3
1Department of Orthopedics, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510630, China.
Abstract:
Neural cell death is pivotal in the pathogenesis of spinal cord injury (SCI). Recent studies have revealed a spectrum of cell death modalities in SCI, extending beyond traditional apoptosis and necrosis. Yet, the interplay between these diverse forms of cell death in SCI remains elusive. Is simultaneous intervention in various forms of cell death necessary for formulating effective therapeutic strategies for post-SCI neural cell death? In this study, we analyzed transcriptomic data from a public database, focusing on murine spinal cord tissue after SCI. This analysis identified 33 differentially expressed death-related genes (DEDRGs) active in both the acute and subacute phases of SCI. Enrichment analysis using the KEGG revealed that 15 of these DEDRGs were enriched in pathways related to apoptosis (Mcl1, Ripk1, Ctsb, Fos, Ctsd, Jun, Akt3, Casp8, Mapk8), ferroptosis (Acsl3, Slc39a14, Slc3a2), necroptosis (Ripk1, Casp1, Casp8, Mapk8), and cellular senescence (Map2k3, Akt3, Mapk14). Subsequently, we established a murine SCI model and used WB and IF to confirm the presence of apoptosis, ferroptosis, necroptosis, and cellular senescence at 1, 3, and 7 days after SCI. Furthermore, we utilized a single-cell database to elucidate the communication dynamics between immune and neural cells at these time intervals. This facilitated the identification of pivotal immune-related receptor-ligand pairs and their correlation with key DEDRGs. Our comprehensive analysis sheds light on the complex interplay between the immune cells and neural cells following SCI, underscoring the critical role of receptor-ligand pairs in neural-immune communication. Finally, we selectively targeted these 15 DEDRGs for gene ontology (GO) functional enrichment analysis. We then constructed an integrated mRNA-miRNA-lncRNA regulatory network and predicted potential pharmaceutical interventions. Notably, our findings suggest a prevalent co-occurrence and mutual influence among various cell death forms after SCI. Consequently, we advocate that therapeutic research strategies for SCI should encompass a multi-target approach, addressing several forms of cell death concurrently.
Insights
Spinal cord injury (SCI) involves multiple cell death types, including apoptosis, ferroptosis, necroptosis, and senescence. Effective SCI therapies require targeting these diverse cell death pathways simultaneously for better outcomes.
Area of Science:
- Neuroscience
- Immunology
- Genetics
Background:
- Neural cell death is a key factor in spinal cord injury (SCI) pathogenesis.
- Understanding the diverse and interacting forms of cell death post-SCI is crucial for developing effective treatments.
Purpose of the Study:
- To investigate the interplay of various cell death modalities in SCI.
- To identify key genes and pathways involved in neural cell death after SCI.
- To explore immune-neural cell communication and its role in SCI.
Main Methods:
- Analysis of transcriptomic data from murine SCI models.
- KEGG and Gene Ontology (GO) enrichment analyses.
- Experimental validation using Western blot (WB) and immunofluorescence (IF).
- Single-cell database analysis for cell-cell communication.
- Construction of mRNA-miRNA-lncRNA regulatory networks.
Main Results:
- Identified 33 differentially expressed death-related genes (DEDRGs) in SCI.
- Confirmed apoptosis, ferroptosis, necroptosis, and cellular senescence post-SCI.
- Revealed significant immune-neural cell communication via receptor-ligand pairs correlated with DEDRGs.
- Found co-occurrence and mutual influence among different cell death forms.
Conclusions:
- Neural cell death in SCI is complex, involving multiple interacting pathways.
- Therapeutic strategies for SCI should adopt a multi-target approach addressing various cell death forms concurrently.
- Targeting specific DEDRGs and receptor-ligand pairs holds therapeutic potential for SCI.
