Abstract
The microRNAs (miRNAs) are involved in multiple pathological processes among various types of tumors. However, the functions of miRNAs in benign brain tumors are largely unexplored. In order to explore the pathogenesis of the invasiveness in non-functional pituitary adenoma (NFPA), the miRNAs expression profile was analyzed between invasive and non-invasive non-functional pituitary adenoma by miRNAs microarray. Six most significant differentially expressed miRNAs were identified including four upregulated miRNAs hsa-miR-181b-5p, hsa-miR-181d, hsa-miR-191-3p, and hsa-miR-598 and two downregulated miRNAs hsa-miR-3676-5p and hsa-miR-383. The functions and corresponding signaling pathways of differentially expressed miRNAs were investigated by bioinformatics techniques, including Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. The result of GO analysis indicates regulation of voltage-gated potassium channel activity, positive regulation of sodium ion transport, positive regulation of GTPase activity, negative regulation of Notch signaling pathway, etc. KEGG pathway reveals a series of biological processes, including prolactin signaling pathway, endocrine and other factor-regulated calcium reabsorption, fatty acid metabolism, neuroactive ligand-receptor interaction, etc. The miRNAs hsa-miR-181a-5p was verified by quantitative real-time PCR, and the expression level was in accordance with the microarray result. Our result can provide the evidence on featured miRNAs which play a prominent role in pituitary adenoma as effective biomarkers and therapeutic targets in the future.
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Acknowledgements
We gratefully appreciate the kind collaboration in the department of pathology in Zhongshan Hospital for the identification of pathological diagnoses. This work was supported by the Foundation of Ministry of Science and Technology of People’s Republic of China (2016YFC0106103), the Shanghai Municipal Health and Family Planning Commission (20164Y0141), and the Affiliated Zhongshan Hospital of Fudan University (Discipline-34, 2016ZSQN42).
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Silin Wu, Ye Gu, and Yuying Huang have contributed equally to this work.
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Wu, S., Gu, Y., Huang, Y. et al. Novel Biomarkers for Non-functioning Invasive Pituitary Adenomas were Identified by Using Analysis of microRNAs Expression Profile. Biochem Genet 55, 253–267 (2017). https://doi.org/10.1007/s10528-017-9794-9
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DOI: https://doi.org/10.1007/s10528-017-9794-9