Bioinformatics Analysis of Programmed Cell Death in Spinal Cord Injury
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Published on: April 9, 2011
Xuegang He1, Bo Deng2, Miao Ma2
1Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, China; The Second Clinical Medical College, Lanzhou University, Lanzhou, China; The International Cooperation Base of Gansu Province for the Pain Research in Spinal Disorders, Lanzhou, China.
Background:
Programmed cell death (PCD) in the development of spinal cord injury (SCI) is complicated, including apoptosis, necroptosis, pyroptosis, ferroptosis, cuproptosis, and autophagy. It is necessary to make clear the expression levels of PCD and potential molecular targets after SCI for formulating relevant treatment strategies.
Methods:
We downloaded the rats' SCI expression matrix GSE45006, and the ssGSEA method was used to analyze the PCD after SCI. Then the related differentially expressed genes (DEGs) were identified, and the gene ontology (GO) and pathway analysis, protein-protein interaction (PPI) network construction, and HUB genes were identified. Finally, the correlation between HUB genes and PCD was analyzed.
Results:
Apoptosis, necroptosis, pyroptosis, ferroptosis, and autophagy increased significantly in acute SCI, and then decreased gradually in the subacute and chronic stages; cuproptosis in acute SCI decreased significantly, and then gradually increased. In addition, we also screened 116 DEGs during the development of SCI. GO and pathway analysis showed that DEGs was related to mitosis and cell cycle. The identified hub genes are closely related to cell apoptosis, necroptosis, pyroptosis, ferroptosis after injury, and autophagy.
Conclusions:
PCD occurs differently in different stages after SCI. To inhibit apoptosis, necroptosis, pyroptosis, and ferroptosis after injury and induce autophagy may be the therapeutic strategy. In addition, intervention therapy based on related HUB genes may be the therapeutic target of SCI.
Insights
Programmed cell death (PCD) pathways like apoptosis and necroptosis are altered after spinal cord injury (SCI). Targeting specific PCD types and hub genes offers potential therapeutic strategies for SCI recovery.
Area of Science:
- Neuroscience
- Cell Biology
- Genomics
Background:
- Spinal cord injury (SCI) involves complex programmed cell death (PCD) processes, including apoptosis, necroptosis, pyroptosis, ferroptosis, cuproptosis, and autophagy.
- Understanding PCD dynamics and molecular targets post-SCI is crucial for developing effective treatments.
Purpose of the Study:
- To investigate the expression levels and patterns of various PCD types following SCI.
- To identify key molecular targets and differentially expressed genes (DEGs) associated with SCI-induced PCD.
Main Methods:
- Utilized the ssGSEA method on the GSE45006 rat SCI expression matrix to analyze PCD.
- Identified differentially expressed genes (DEGs), constructed protein-protein interaction (PPI) networks, and identified hub genes.
- Performed Gene Ontology (GO) and pathway analyses to understand DEG functions.
Main Results:
- Apoptosis, necroptosis, pyroptosis, ferroptosis, and autophagy showed significant changes across acute, subacute, and chronic SCI stages.
- Cuproptosis exhibited a distinct pattern, decreasing in acute SCI and increasing thereafter.
- 116 DEGs were identified, primarily associated with mitosis and cell cycle, with hub genes linked to major PCD types.
Conclusions:
- PCD mechanisms vary significantly with SCI progression.
- Therapeutic strategies may involve inhibiting apoptosis, necroptosis, pyroptosis, and ferroptosis while promoting autophagy.
- Hub genes identified represent potential therapeutic targets for SCI intervention.
