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BACKGROUND Chronic spinal cord injury (CSCI) is a worldwide clinical problem. We aimed to reveal differentially expressed (DE) lncRNAs and to find associated pathways that may function as targets for CSCI therapy. MATERIAL AND METHODS After a CSCI rat model was confirmed by the Basso Beattie Bresnahan (BBB) scale and the Magnetic Resonance Imaging (MRI) test, microarray analysis was used to obtain the expression profile of DE lncRNAs between CSCI rats and corresponding control rats. Then, bioinformatics analyses, including GO and KEGG pathway analysis, DE lncRNAs-mRNAs co-expression analysis, and several databases, were used to examine the function of these DE lncRNAs. Finally, quantitative real-time PCR (qRT-PCR) was used to evaluate the expressions of the 5 most significantly changed lncRNAs, Col6a1, and miR-330-3p. RESULTS Our study identified 1266 DE lncRNAs and 847 DE mRNAs, among which lncRNA6032 was significant up-regulated. Furthermore, the expressions of miR-330-3p and Col6a1 associated with lncRNA6032 were down-regulated and up-regulated, respectively. CONCLUSIONS Our results showed that the abundance of DE lncRNAs may be associated with the risk of CSCI outcome and revealed a potential competitive endogenous RNA (ceRNA) pathway involved in CSCI. Further experiments in vivo and in vitro were essential to uncover the exact mechanism of this ceRNA pathway.

A Potential Competitive Endogenous RNA Pathway Involved in Chronic Spinal Cord Injury