Involvement of 3D osteoblast migration and bone apatite during in vitro early osteocytogenesis.

Autor: Robin M; Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire Chimie de la Matière Condensée de Paris UMR 7574, 11 place Marcelin Berthelot, 75005 Paris, France., Almeida C; Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire Chimie de la Matière Condensée de Paris UMR 7574, 11 place Marcelin Berthelot, 75005 Paris, France., Azaïs T; Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire Chimie de la Matière Condensée de Paris UMR 7574, 11 place Marcelin Berthelot, 75005 Paris, France., Haye B; Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire Chimie de la Matière Condensée de Paris UMR 7574, 11 place Marcelin Berthelot, 75005 Paris, France., Illoul C; Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire Chimie de la Matière Condensée de Paris UMR 7574, 11 place Marcelin Berthelot, 75005 Paris, France., Lesieur J; EA 2496, Pathologies, Imaging and Biotherapies of the Tooth, UFR Odontologie, University Paris Descartes PRES Sorbonne Paris Cite, Montrouge, France., Giraud-Guille MM; Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire Chimie de la Matière Condensée de Paris UMR 7574, 11 place Marcelin Berthelot, 75005 Paris, France., Nassif N; Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire Chimie de la Matière Condensée de Paris UMR 7574, 11 place Marcelin Berthelot, 75005 Paris, France. Electronic address: nadine.nassif@upmc.fr., Hélary C; Sorbonne Universités UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire Chimie de la Matière Condensée de Paris UMR 7574, 11 place Marcelin Berthelot, 75005 Paris, France. Electronic address: christophe.helary@upmc.fr.
Jazyk: angličtina
Zdroj: Bone [Bone] 2016 Jul; Vol. 88, pp. 146-156. Date of Electronic Publication: 2016 May 02.
DOI: 10.1016/j.bone.2016.04.031
Abstrakt: The transition from osteoblast to osteocyte is described to occur through passive entrapment mechanism (self-buried, or embedded by neighboring cells). Here, we provide evidence of a new pathway where osteoblasts are "more" active than generally assumed. We demonstrate that osteoblasts possess the ability to migrate and differentiate into early osteocytes inside dense collagen matrices. This step involves MMP-13 simultaneously with IBSP and DMP1 expression. We also show that osteoblast migration is enhanced by the presence of apatite bone mineral. To reach this conclusion, we used an in vitro hybrid model based on both the structural characteristics of the osteoid tissue (including its density, texture and three-dimensional order), and the use of bone-like apatite. This finding highlights the mutual dynamic influence of osteoblast cell and bone extra cellular matrix. Such interactivity extends the role of physicochemical effects in bone morphogenesis complementing the widely studied molecular signals. This result represents a conceptual advancement in the fundamental understanding of bone formation.
(Copyright © 2016 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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