Open Access

Characterization of microRNA expression profiles in patients with intervertebral disc degeneration

  • Authors:
    • Bo Zhao
    • Qiang Yu
    • Haopeng Li
    • Xiong Guo
    • Xijing He
  • View Affiliations

  • Published online on: October 30, 2013     https://doi.org/10.3892/ijmm.2013.1543
  • Pages: 43-50
  • Copyright: © Zhao et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].

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Abstract

Intervertebral disc degeneration (IDD) is associated with lower back pain and is a global burden with severe healthcare and socioeconomic consequences. However, the underlying mechanisms of IDD remain largely unelucidated. Accumulating evidence has indicasted that newly defined gene regulators, microRNAs (miRNAs), play a vital role in neurodegenerative, pathophysiological and certain reproductive disorders. To characterize the differential miRNA expression profiles between IDD and spinal cord injury, specimens from 3 patients with IDD and 3 with spinal cord injury were selected for microarray analysis. Total RNA from these 6 specimens was extracted and subjected to global miRNA expression analysis using the Exiqon miRCURY™ LNA Array (v.16.0). The microarray data were then validated by quantitative reverse transcription polymerase chain reaction (qRT-PCR). In addition, bioinformatics analysis was performed to investigate the dysregulated miRNA target genes and signaling pathways involved. Among the miRNAs analyzed, 25 miRNAs were found to be upregulated and 26 were found to be downregulated in the IDD group compared with the spinal cord injury group. The qRT-PCR results validated the microarray data. Bioinformatics analysis indicated that the signaling pathways most likely to be controlled by these miRNAs were the phosphoinositide 3-kinase (PI3K)-Akt, mitogen-activated protein kinase (MAPK), epidermal growth factor receptor (EGFR; ErbB) and Wnt pathways. Our results demonstrated that the miRNA expression in patients with IDD differed significantly from that in patients who sustained injury to the intervertebral disc. Our data indicate that the dysregulated miRNAs control the signaling pathways important for the maintenance of IDD. Further studies on miRNA target gene identification and biological functions may address the specific regulatory mechanisms of miRNAs in IDD, and may provide valuable insight into the diagnosis and treatment of IDD.
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2014-January
Volume 33 Issue 1

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Copy and paste a formatted citation
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Spandidos Publications style
Zhao B, Yu Q, Li H, Guo X and He X: Characterization of microRNA expression profiles in patients with intervertebral disc degeneration. Int J Mol Med 33: 43-50, 2014.
APA
Zhao, B., Yu, Q., Li, H., Guo, X., & He, X. (2014). Characterization of microRNA expression profiles in patients with intervertebral disc degeneration. International Journal of Molecular Medicine, 33, 43-50. https://doi.org/10.3892/ijmm.2013.1543
MLA
Zhao, B., Yu, Q., Li, H., Guo, X., He, X."Characterization of microRNA expression profiles in patients with intervertebral disc degeneration". International Journal of Molecular Medicine 33.1 (2014): 43-50.
Chicago
Zhao, B., Yu, Q., Li, H., Guo, X., He, X."Characterization of microRNA expression profiles in patients with intervertebral disc degeneration". International Journal of Molecular Medicine 33, no. 1 (2014): 43-50. https://doi.org/10.3892/ijmm.2013.1543