Expression of Cartilage-derived Morphogenetic Protein in Human Intervertebral Discs and Its Effect on Matrix Synthesis in Degenerate Human Nucleus Pulposus Cells

Overview

Journal Arthritis Res Ther

Publisher Biomed Central

Specialty Rheumatology

Date 2009 Sep 17

PMID 19754961

Citations 27

Authors

Christine L Le Maitre

Anthony J Freemont

Judith A Hoyland

Affiliations

Soon will be listed here.

Abstract

Introduction: Loss of intervertebral disc (IVD) matrix and ultimately disc height as a result of 'degeneration' has been implicated as a major cause of low back pain (LBP). The use of anabolic growth factors as therapies to regenerate IVD matrix, hence restoring disc height and thus reversing degenerative disc disease, has been suggested. Cartilage-derived morphogenetic protein (CDMP) is a growth factor which stimulates proteoglycan production in chondrocyte-like cells and thus could be a useful growth factor for LBP therapies. However, little is known about the expression of CDMP or its receptor in human IVD, nor its effects on human disc cells.

Methods: Using immunohistochemistry we investigated the localisation of CDMP in non-degenerate and degenerate human IVDs. Additionally, we investigated the effect of CDMP on aggrecan and type II collagen gene expression and proteoglycan synthesis in nucleus pulposus (NP) cells derived from degenerate IVDs.

Results: We demonstrated that CDMP 1 and 2 were expressed in the non-degenerate and degenerate IVD, particularly in cells of the NP. A small decrease in the number of CDMP 1 and 2 immunopositive cells was seen with degeneration. Treatment of human NP cells, (derived from degenerate IVD), with CDMP showed an increase in aggrecan and type II collagen gene expression and increased production of proteoglycan (GAGs).

Conclusions: The data suggests that CDMP may be a useful growth factor to stimulate proteoglycan production in the human degenerate IVD and hence the repair of the extracellular matrix.

Citing Articles

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Injectable biomaterial induces regeneration of the intervertebral disc in a caprine loaded disc culture model.

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Human 3D nucleus pulposus microtissue model to evaluate the potential of pre-conditioned nasal chondrocytes for the repair of degenerated intervertebral disc.

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Immuno-Modulatory Effects of Intervertebral Disc Cells.

Bermudez-Lekerika P, Crump K, Tseranidou S, Nuesch A, Kanelis E, Alminnawi A Front Cell Dev Biol. 2022; 10:924692.

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