title: Neural stem cells induce bone-marrow-derived mesenchymal stem cells to generate neural stem-like cells via juxtacrine and paracrine interactions.
abstract: Several recent reports suggest that there is far more plasticity that previously believed in the developmental potential of bone-marrow-derived cells (BMCs) that can be induced by extracellular developmental signals of other lineages whose nature is still largely unknown. In this study, we demonstrate that bone-marrow-derived mesenchymal stem cells (MSCs) co-cultured with mouse proliferating or fixed (by paraformaldehyde or methanol) neural stem cells (NSCs) generate neural stem cell-like cells with a higher expression of Sox-2 and nestin when grown in NS-A medium supplemented with N2, NSC conditioned medium (NSCcm) and bFGF. These neurally induced MSCs eventually differentiate into beta-III-tubulin and GFAP expressing cells with neuronal and glial morphology when grown an additional week in Neurobasal/B27 without bFGF. We conclude that juxtacrine interaction between NSCs and MSCs combined with soluble factors released from NSCs are important for generation of neural-like cells from bone-marrow-derived adherent MSCs.
authors.affiliation: Neuroscience Research Labs, Dept. of Neurosurgery, Medical College of Wisconsin, VAMC, 5000 W. National Ave. 151, Milwaukee, WI 53295, USA. aalexan@mcw.edu
authors.forename: Arshak R
authors.initials: AR
authors.lastname: Alexanian
mesh_terms: D000818:Animals; D001854:Bone Marrow Cells / Q000166:cytology / Q000502:physiology*; D002454:Cell Differentiation; D002478:Cells, Cultured; D018920:Coculture Techniques; D004268:DNA-Binding Proteins / Q000032:analysis / Q000378:metabolism; D005260:Female; D007381:Intermediate Filament Proteins / Q000032:analysis / Q000378:metabolism; D008297:Male; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000502:physiology*; D051379:Mice; D008815:Mice, Inbred Strains; D009419:Nerve Tissue Proteins / Q000032:analysis / Q000378:metabolism; D064231:Nestin; D009474:Neurons / Q000737:chemistry / Q000502:physiology*; D019899:Paracrine Communication; D055748:SOXB1 Transcription Factors; D013234:Stem Cells / Q000502:physiology*; D015534:Trans-Activators / Q000032:analysis / Q000378:metabolism
chemical_list: D004268:DNA-Binding Proteins; D007381:Intermediate Filament Proteins; D009419:Nerve Tissue Proteins; C577485:Nes protein, mouse; D064231:Nestin; D055748:SOXB1 Transcription Factors; C527783:Sox2 protein, mouse; D015534:Trans-Activators