Comprehensive analysis of mRNA-microRNA-lncRNA expression profiles in post-traumatic elbow heterotopic ossification using RNA sequencing and experimental validation.
This study identified key molecular signatures in post-traumatic elbow heterotopic ossification, which may help guide future research on therapeutic targets.
Where it sits
this study against the rest of the fgl (fg loop peptide) corpusSummary and findings
This study profiled molecular signatures in post-traumatic elbow heterotopic ossification (HO) using RNA sequencing. The analysis included 4 HO tissue samples and 6 normal bone tissues. Key findings included the identification of 2,138 differentially expressed mRNAs, 40 microRNAs, and 905 lncRNAs.
Abstract
<h4>Background</h4>This study aimed to profile the molecular signatures of post-traumatic elbow heterotopic ossification (HO) to identify key regulators and potential therapeutic targets.<h4>Methods</h4>Total RNA from post-traumatic elbow HO tissues (n=4) and normal bone tissues (n=6) was subjected to high-throughput sequencing to identify differentially expressed mRNAs (DEGs), microRNAs (DEMs), and lncRNAs (DELs). Bioinformatics analyses included Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment, protein-protein interaction network construction, and transcription factor (TF)-microRNA-mRNA network analysis. The expression trends of four most upregulated and four most downregulated DEGs were validated by real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR).<h4>Results</h4>We identified 2,138 DEGs, 40 DEMs, and 905 DELs. DEGs were significantly enriched in biological process "bone mineralization," cellular component "plasma membrane," molecular function "integrin binding," and pathways including PI3K-Akt, NF-κB, JAK-STAT, and TNF signaling pathways. Hub genes with high connectivity included MMP9, IL6, MMP3, CTSK, and BGLAP. Integrated network analysis highlighted the transcription factor JUN and key microRNAs (hsa-miR-124-3p, hsa-miR-548c-3p, and hsa-miR-135b). The qRT-PCR results confirmed the expression trends of selected DEGs.<h4>Conclusions</h4>This study, for the first time, profiled the differentially expressed mRNAs, microRNAs, and lncRNAs in post-traumatic elbow HO using high-throughput RNA sequencing. These findings provide valuable insights into the molecular mechanisms of HO following elbow trauma. The identified hub genes (MMP9, IL6, MMP3, CTSK, and BGLAP), key TF (JUN), and key microRNAs (hsa-miR-124-3p, hsa-miR-548c-3p, and hsa-miR-135b) may serve as potential therapeutic targets for preventing and treating post-traumatic elbow HO.
Background
This paper addresses the molecular mechanisms underlying post-traumatic elbow heterotopic ossification (HO), a condition where bone forms in soft tissue following trauma. Prior knowledge on HO has been limited, particularly regarding the specific molecular signatures involved. Understanding these signatures can help identify potential therapeutic targets and improve treatment strategies.
Methods
The study utilized high-throughput RNA sequencing to analyze total RNA from post-traumatic elbow HO tissues (n=4) and normal bone tissues (n=6). Bioinformatics analyses included Gene Ontology (GO) and KEGG pathway enrichment, along with network analysis. The expression of selected DEGs was validated using qRT-PCR.
Results
A total of 2,138 DEGs, 40 DEMs, and 905 DELs were identified. DEGs showed significant enrichment in biological processes related to 'bone mineralization' and were linked to several signaling pathways. The qRT-PCR results confirmed the expression trends of selected DEGs.
Interpretation
The findings contribute to the understanding of molecular changes in post-traumatic HO, identifying several hub genes and key regulatory elements. While the statistical significance of these findings is noted, the clinical relevance remains uncertain due to the small sample size and lack of longitudinal data. These results suggest potential avenues for further research but should be interpreted with caution.
Key findings
- Identified 2,138 differentially expressed mRNAs (DEGs), 40 differentially expressed microRNAs (DEMs), and 905 differentially expressed lncRNAs (DELs).
- DEGs were significantly enriched in biological processes related to 'bone mineralization' and pathways including PI3K-Akt, NF-κB, JAK-STAT, and TNF signaling.
- Hub genes with high connectivity included MMP9, IL6, MMP3, CTSK, and BGLAP.
- Real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) confirmed the expression trends of selected DEGs.
Limitations
- Small sample size (n=4 for HO tissues).
- No clinical outcome data reported.
- Short duration of follow-up.
- Findings based on RNA sequencing without functional validation.