Abstract
Circular RNA (circRNA) plays an important role in the regulation of multiple biological processes. However, circRNA profiling and the potential biological role of circRNA in influenza A virus (IAV)-induced lung injury have not been investigated. In the present study, circRNA expression profiles in lung tissues from mice with and without IAV-induced lung injury were analyzed using high-throughput sequencing, and differentially expressed circRNAs were verified by quantitative PCR. The gene homology of candidate circRNAs was investigated and the expression of plasma circRNAs from patients with IAV-induced acute respiratory distress syndrome (ARDS) was detected. The target microRNAs (miRNAs) of circRNAs were predicted. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed. In total, 781 circRNAs were differentially expressed between ARDS mice and control (467 were up-regulated and 314 were down-regulated). Moreover, the candidate circRNAs (Slco3a1, Nfatc2, Wdr33, and Dmd) expression showed the same trend with the sequencing results. The isoforms of circRNA Slco3a1 and Wdr33 were highly conserved between humans and mice. Plasma circRNA Slco3a1 and Wdr33 presented differential expression in patients with IAV-induced ARDS compared to control. The circRNA-miRNA interaction network and GO and KEGG analyses indicated the potential biological role of circRNAs in the development of IAV-induced lung injury. Taken together, a large number of differentially expressed circRNAs were identified in our study. CircRNA Slco3a1 and Wdr33 had significantly different expression in specimens from mice and humans, and showed a potential biological role in IAV-induced lung injury by bioinformatics analysis.





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- ARDS:
-
acute respiratory distress syndrome
- circRNA:
-
circular RNA
- GO:
-
gene ontology
- IAV:
-
influenza A virus
- KEGG:
-
Kyoto encyclopedia of genes and genomes
- miRNA:
-
MicroRNA
- qPCR:
-
quantitative PCR
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Acknowledgements
This work was supported by grants from the National Science and Technology Major Project (No. 2017ZX10204401003), the Suzhou Science and Technology Project (Nos. KJXW2018008, SYS2019048, and SS201711), and the Suzhou Medical Key Subject (SZXK201516). We would like to thank Dr. Anushka Aghi, from Panchkula, India, for her help in the development of this manuscript.
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This study was approved by the Institutional Review Board of the First Affiliated Hospital of Soochow University, and informed consents were obtained from all participants.
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Corresponding editor: Sreenivas Chavali
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Wang, J., Zhang, Y., Zhu, F. et al. CircRNA expression profiling and bioinformatics analysis indicate the potential biological role and clinical significance of circRNA in influenza A virus-induced lung injury. J Biosci 46, 38 (2021). https://doi.org/10.1007/s12038-021-00152-8
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DOI: https://doi.org/10.1007/s12038-021-00152-8


