Abstract
MicroRNAs (miRNAs) can regulate gene expression through binding to complementary sites in the 3′-untranslated regions of target mRNAs, which will lead to existence of correlation in expression between miRNA and mRNA. However, the miRNA–mRNA correlation patterns are complex and remain largely unclear yet. To establish the global correlation patterns in human peripheral blood mononuclear cells (PBMCs), multiple miRNA–mRNA correlation analyses and expression quantitative trait locus (eQTL) analysis were conducted in this study. We predicted and achieved 861 miRNA–mRNA pairs (65 miRNAs, 412 mRNAs) using multiple bioinformatics programs, and found global negative miRNA–mRNA correlations in PBMC from all 46 study subjects. Among the 861 pairs of correlations, 19.5% were significant (P < 0.05) and ~70% were negative. The correlation network was complex and highlighted key miRNAs/genes in PBMC. Some miRNAs, such as hsa-miR-29a, hsa-miR-148a, regulate a cluster of target genes. Some genes, e.g., TNRC6A, are regulated by multiple miRNAs. The identified genes tend to be enriched in molecular functions of DNA and RNA binding, and biological processes such as protein transport, regulation of translation and chromatin modification. The results provided a global view of the miRNA–mRNA expression correlation profile in human PBMCs, which would facilitate in-depth investigation of biological functions of key miRNAs/mRNAs and better understanding of the pathogenesis underlying PBMC-related diseases.
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Acknowledgements
The study was supported by National Natural Science Foundation of China (81473046, 31071097, 31271336, 81372024, 81373010, 81502868, 31401079, 81401343, 81541068), the Natural Science Foundation of Jiangsu Province (BK20130300, BK20150346), the Natural Science Research Project of Jiangsu Provincial Higher Education (16KJA330001), the Startup Fund from Soochow University (Q413900112, Q413900712), and a Project of the Priority Academic Program Development of Jiangsu Higher Education Institutions.
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This study was funded by National Natural Science Foundation of China (81473046, 31071097, 31271336, 81372024, 81373010, 81502868, 31401079, 81401343, 81541068), the Natural Science Foundation of Jiangsu Province (BK20130300, BK20150346), the Project funded by China Postdoctoral Science Foundation (2014M551649), the Natural Science Research Project of Jiangsu Provincial Higher Education (16KJA330001), the Startup Fund from Soochow University (Q413900112, Q413900712), and a Project of the Priority Academic Program Development of Jiangsu Higher Education Institutions.
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All authors declare that they have no conflict of interest.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Informed consent was obtained from all individual participants included in the study.
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Communicated by S. Hohmann.
Lan Wang and Jiang Zhu contributed equally to this article.
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438_2017_1367_MOESM1_ESM.tif
Supplementary material 1: Fig. S1 The physical distance from miRNA to mRNA transcript start site against P value from the eQTL analysis. The x-axis is physical distance in kb between transcript start site of miRNA and its target mRNA. The y-axis is -lgP of miRNA-eQTL. The P-values were generated from regression analyses, in which the confounding effects of age and disease activity on mRNA expression have been adjusted (TIFF 4704 kb)
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Wang, L., Zhu, J., Deng, FY. et al. Correlation analyses revealed global microRNA–mRNA expression associations in human peripheral blood mononuclear cells. Mol Genet Genomics 293, 95–105 (2018). https://doi.org/10.1007/s00438-017-1367-4
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DOI: https://doi.org/10.1007/s00438-017-1367-4