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24 September 2016 : Laboratory Research  

Identification of Potential Key Long Non-Coding RNAs and Target Genes Associated with Pneumonia Using Long Non-Coding RNA Sequencing (lncRNA-Seq): A Preliminary Study

Sai HuangABDEF, Cong FengAB, Li ChenEF, Zhi HuangCD, Xuan ZhouB, Bei LiD, Li-li WangE, Wei ChenF, Fa-qin LvF, Tan-shi LiABFG

DOI: 10.12659/MSM.900783

Med Sci Monit 2016; 22:3394-3408

Abstract

BACKGROUND: This study aimed to identify the potential key long non-coding RNAs (lncRNAs) and target genes associated with pneumonia using lncRNA sequencing (lncRNA-seq).

MATERIAL AND METHODS: A total of 9 peripheral blood samples from patients with mild pneumonia (n=3) and severe pneumonia (n=3), as well as volunteers without pneumonia (n=3), were received for lncRNA-seq. Based on the sequencing data, differentially expressed lncRNAs (DE-lncRNAs) were identified by the limma package. After the functional enrichment analysis, target genes of DE-lncRNAs were predicted, and the regulatory network was constructed.

RESULTS: In total, 99 DE-lncRNAs (14 upregulated and 85 downregulated ones) were identified in the mild pneumonia group and 85 (72 upregulated and 13 downregulated ones) in the severe pneumonia group, compared with the control group. Among these DE-lncRNAs, 9 lncRNAs were upregulated in both the mild and severe pneumonia groups. A set of 868 genes were predicted to be targeted by these 9 DE-lncRNAs. In the network, RP11-248E9.5 and RP11-456D7.1 targeted the majority of genes. RP11-248E9.5 regulated several genes together with CTD-2300H10.2, such as QRFP and EPS8. Both upregulated RP11-456D7.1 and RP11-96C23.9 regulated several genes, such as PDK2. RP11-456D7.1 also positively regulated CCL21.

CONCLUSIONS: These novel lncRNAs and their target genes may be closely associated with the progression of pneumonia.

Keywords: Gene Regulatory Networks, Genes, vif, Pneumonia, Aspiration

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750