Multiscale Characterization of Embryonic Long Bone Mineralization in Mice
Artikel i vetenskaplig tidskrift, 2020

Long bone mineralization occurs through endochondral ossification, where a cartilage template mineralizes into bone-like tissue with a hierarchical organization from the whole bone-scale down to sub-nano scale. Whereas this process has been extensively studied at the larger length scales, it remains unexplored at some of the smaller length scales. In this study, the changes in morphology, composition, and structure during embryonic mineralization of murine humeri are investigated using a range of high-resolution synchrotron-based imaging techniques at several length scales. With micro- and nanometer spatial resolution, the deposition of elements and the shaping of mineral platelets are followed. Rapid mineralization of the humeri occurs over approximately four days, where mineral to matrix ratio and calcium content in the most mineralized zone reach adult values shortly before birth. Interestingly, zinc is consistently found to be localized at the sites of ongoing new mineralization. The mineral platelets in the most recently mineralized regions are thicker, longer, narrower, and less aligned compared to those further into the mineralized region. In summary, this study demonstrates a specific spatial distribution of zinc, with highest concentration where new mineral is being deposited and that the newly formed mineral platelets undergo slight reshaping and reorganization during embryonic development.

small- and wide-angle X-ray scattering

X-ray fluorescence spectroscopy

X-ray tomography

Fourier transform infra-red microspectroscopy

bone development

Författare

Isabella Silva Barreto

Lunds universitet

Sophie Le Cann

Lunds universitet

Saima Ahmed

Imperial College London

Vivien Sotiriou

Imperial College London

Mikael J. Turunen

Itä-Suomen Yliopisto

Ulf Johansson

MAX IV Laboratory

Angel Rodriguez-Fernandez

MAX IV Laboratory

Tilman A. Grünewald

European Synchrotron Radiation Facility (ESRF)

Marianne Liebi

Chalmers, Fysik, Materialfysik

Niamh C. Nowlan

Imperial College London

Hanna Isaksson

Lunds universitet

Advanced Science

2198-3844 (ISSN)

Vol. In Press

Ämneskategorier

Geologi

Geokemi

Multidisciplinär geovetenskap

DOI

10.1002/advs.202002524

Mer information

Senast uppdaterat

2020-10-16