Indications of that migration of stem cells is influenced by the extra cellular matrix architecture in the mammalian intervertebral disk region

Tissue & Cell
Helena Barreto HenrikssonHelena Brisby

Abstract

Disk-degeneration is believed a major cause for lumbar pain. Previously, potential stem cell niches in the intervertebral disk (IVD) region, located adjacent to epiphyseal plate, was reported. The aim of the study was to examine migration of mesenchymal stem cells (MSCs), extracellular matrix (ECM) architecture in a potential cellular migration route (CMR; area located between the niche and IVD) and in the IVD in non-degenerated lapine- and in human degenerated IVD tissues. Human MSCs (n=3), human degenerated IVD tissues (n=10) and lapine IVDs (n=10) were collected. The samples were examined by immunohistochemistry for stem cell markers; CD90, OCT3/4, pre-chondrocytic marker; GDF5, catabolic markers; MMP9, MMP13, inflammatory marker; IL1R, cellular migration markers; SNAI1, SNAI2, adhesion markers; β1-INTEGRIN and DDR2. In addition, gene-expression analyses (Real time PCR) were performed on additional samples. Further, time lapse studies were performed with hMSCs cultured on aligned COLL-I-fibers-coated glass-slides in DMEM-LG, 10% human serum containing fibroblast growth factor (bFGF). Presence of stem cells (CD90+, OCT3/4+), pre-chondocytic cells (GDF5+) and cells positive for migration markers (SNAI1+, SNAI2+), catabolic mar...Continue Reading

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