Expression of long non-coding RNAs in complete transection spinal cord injury: a transcriptomic analysis

Area of Science:

• Neuroscience
• Genomics
• Molecular Biology

Background:

• Long non-coding RNAs (lncRNAs) are crucial for gene regulation in the central nervous system.
• Understanding lncRNA roles in spinal cord injury (SCI) is vital for developing treatments.

Purpose of the Study:

• To investigate the expression profiles and functional significance of lncRNAs in a rat model of complete transection SCI.
• To identify potential molecular targets for SCI treatment by analyzing differentially expressed lncRNAs and mRNAs.

Main Methods:

• RNA sequencing (RNA-seq) was used to profile lncRNA and mRNA expression in rat spinal cord tissue after SCI.
• Quantitative real-time PCR validated a subset of RNA-seq findings.
• Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed on differentially expressed mRNAs.

Main Results:

• 116 out of 14,802 detected lncRNAs were differentially expressed post-SCI (fold change > 2).
• 821 mRNAs were significantly altered, with 592 up-regulated and 229 down-regulated (fold change > 2).
• Differentially expressed mRNAs were associated with injury response, inflammation, wound repair, and apoptosis, enriched in pathways like TNF-alpha signaling.

Conclusions:

• lncRNAs and mRNAs exhibit distinct expression patterns following SCI.
• These identified lncRNAs and mRNAs represent potential therapeutic targets for SCI.
• lncRNAs likely play a significant role in the early immuno-inflammatory response to SCI.