Gene expression profiling identifies interferon signalling molecules and IGFBP3 in human degenerative annulus fibrosus
Author(s)
Type
Journal Article
Abstract
Low back pain is a major cause of disability especially for people between 20 and 50 years of age. As a costly healthcare problem, it imposes a serious socio-economic burden. Current surgical therapies fail to replace the normal disc in facilitating spinal movements and absorbing load. The focus of regenerative medicine is on identifying biomarkers and signalling pathways to improve our understanding about cascades of disc degeneration and allow for the design of specific therapies. We hypothesized that comparing microarray profiles from degenerative and non-degenerative discs will lead to the identification of dysregulated signalling and pathophysiological targets. Microarray data sets were generated from human annulus fibrosus cells and analysed using IPA ingenuity pathway analysis. Gene expression values were validated by qRT-PCR and respective proteins were identified by immunohistochemistry. Microarray analysis revealed 238 differentially expressed genes in the degenerative annulus fibrosus. Seventeen of the dysregulated molecular markers showed log2-fold changes greater than ±1.5. Various dysregulated cellular functions, including cell proliferation and inflammatory response, were identified. The most significant canonical pathway induced in degenerative annulus fibrosus was found to be the interferon pathway. This study indicates interferon-alpha signalling pathway activation with IFIT3 and IGFBP3 up-regulation, which may affect cellular function in human degenerative disc.
Date Issued
2015-10-22
Date Acceptance
2015-09-29
Citation
Scientific Reports, 2015, 5, pp.1-13
ISSN
2045-2322
Publisher
Nature Publishing Group
Start Page
1
End Page
13
Journal / Book Title
Scientific Reports
Volume
5
Copyright Statement
© This work is licensed under a Creative Commons Attribution 4.0 International License. The
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Creative Commons license, users will need to obtain permission from the license holder to reproduce
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images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the
Creative Commons license, users will need to obtain permission from the license holder to reproduce
the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
License URL
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000363144300001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
INTERVERTEBRAL-DISC-DEGENERATION
LOW-BACK-PAIN
FACTOR-BINDING PROTEIN-3
HUMAN NUCLEUS PULPOSUS
CAVEOLIN-1 EXPRESSION
CYTOKINE EXPRESSION
CARTILAGE CELLS
LUNG-CANCER
IN-VIVO
GROWTH
Publication Status
Published
Article Number
ARTN 15662
Date Publish Online
2015-10-22