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A 3D Cell‐Free Bone Model Shows Collagen Mineralization is Driven and Controlled by the Matrix.

A 3D Cell‐Free Bone Model Shows Collagen Mineralization is Driven and Controlled by the Matrix.

Authors :
van der Meijden, Robin H.M.
Daviran, Deniz
Rutten, Luco
Walboomers, X. Frank
Macías‐Sánchez, Elena
Sommerdijk, Nico
Akiva, Anat
Source :
Advanced Functional Materials; 10/13/2023, Vol. 33 Issue 42, p1-12, 12p
Publication Year :
2023

Abstract

Osteons, the main organizational components of human compact bone, are cylindrical structures composed of layers of mineralized collagen fibrils, called lamellae. These lamellae have different orientations, different degrees of organization, and different degrees of mineralization where the intrafibrillar and extrafibrillar minerals are intergrown into one continuous network of oriented crystals. While cellular activity is clearly the source of the organic matrix, recent in vitro studies call into question whether the cells are also involved in matrix mineralization and suggest that this process could be simply driven by the interactions of the mineral with extracellular matrix. Through the remineralization of demineralized bone matrix, the complete multiscale reconstruction of the 3D structure and composition of the osteon without cellular involvement are demonstrated. Then, this cell‐free in vitro system is explored as a realistic, functional model for the in situ investigation of matrix‐controlled mineralization processes. Combined Raman and electron microscopy indicate that glycosaminoglycans (GAGs) play a more prominent role than generally assumed in the matrix–mineral interactions. The experiments also show that the organization of the collagen is in part a result of its interaction with the developing mineral. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
1616301X
Volume :
33
Issue :
42
Database :
Complementary Index
Journal :
Advanced Functional Materials
Publication Type :
Academic Journal
Accession number :
173013752
Full Text :
https://doi.org/10.1002/adfm.202212339