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Increased periostin gene expression in degenerative intervertebral disc cells.
- Source :
-
The spine journal : official journal of the North American Spine Society [Spine J] 2013 Mar; Vol. 13 (3), pp. 289-98. Date of Electronic Publication: 2013 Feb 27. - Publication Year :
- 2013
-
Abstract
- Background Context: Disc degeneration is a multifactorial disease that may cause clinical symptoms such as chronic back pain or radiculopathy in the extremities. Periostin, an extracellular matrix protein involved in the process of fibrosis, expressed in tissues subjected to mechanical stress such as intervertebral disc. However, the expression of periostin during disc degeneration has not yet been studied.<br />Purpose: The aim of this study is to elucidate the difference in gene expression profiles between degenerative and nondegenerative intervertebral discs for a better understanding of disc degeneration.<br />Study Design: Degenerative and nondegenerative nucleus pulposus cells were isolated from elderly patients with degenerative disc disease and younger patients with adolescent idiopathic scoliosis, respectively.<br />Methods: Affymetrix GeneChip Human arrays were used to derive gene expression profiles for disc degeneration, and gene expressions of periostin and other degeneration-related markers were confirmed by reverse transcription-polymerase chain reaction (RT-PCR), real-time RT-PCR, and western blot analysis. Immunohistochemical analysis of periostin and Gomori trichrome stain was performed to show the relationship of periostin, fibrosis, and disc degeneration. The mechanical stress experiment was designed to demonstrate the relationship of periostin, stress, and disc degeneration.<br />Results: Fourteen genes were identified to express at significantly different levels between degenerative and nondegenerative groups. An increase of periostin gene expression was observed in human degenerative nucleus pulposus cells for the messenger RNA and protein levels. Histological examination demonstrated an increased positive staining of periostin in degenerative discs from human tissues and rat needle-punctured tails and more fibrosis with architectural disorder and fragmentation in human degenerative disc as compared with nondegenerative discs. The expression of periostin was significantly induced by stress in human degenerative nucleus pulposus cells but not in nondegenerative cells.<br />Conclusions: This study demonstrates for the first time an upregulation of periostin in addition to the expression levels of Type I collagen and matrix metalloproteinase-2 in human disc degeneration. It suggests that periostin may be a candidate gene that shows promise as a new prognostic marker and a therapeutic target that is worth further study to expand our knowledge of its role in disc degeneration.<br /> (Copyright © 2013 Elsevier Inc. All rights reserved.)
- Subjects :
- Adolescent
Aged
Animals
Cell Adhesion Molecules metabolism
Collagen Type I genetics
Collagen Type I metabolism
Female
Gene Expression
Humans
Intervertebral Disc pathology
Intervertebral Disc Degeneration metabolism
Intervertebral Disc Degeneration pathology
Male
Matrix Metalloproteinase 2 genetics
Matrix Metalloproteinase 2 metabolism
Rats
Scoliosis genetics
Scoliosis metabolism
Scoliosis pathology
Stress, Mechanical
Up-Regulation genetics
Cell Adhesion Molecules genetics
Intervertebral Disc metabolism
Intervertebral Disc Degeneration genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1878-1632
- Volume :
- 13
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- The spine journal : official journal of the North American Spine Society
- Publication Type :
- Academic Journal
- Accession number :
- 23453657
- Full Text :
- https://doi.org/10.1016/j.spinee.2013.01.040