Mapping amorphous calcium phosphate transformation into crystalline mineral from the cell to the bone in zebrafish fin rays

作者：Julia Mahamid, Barbara Aichmayer, Eyal Shimoni, Roy Ziblat, Chenghao Li, Stefan Siegel, Oskar Paris, Peter Fratzl, Steve Weiner, Lia Addadi · 发表于：Proceedings of the National Academy of Sciences · 年份：2010 · DOI：10.1073/pnas.0914218107 · 被引用次数：448 · 研究领域：Calcium Carbonate Crystallization and Inhibition、Bone Tissue Engineering Materials、Paleontology and Evolutionary Biology

The continuously forming fin bony rays of zebrafish represent a simple bone model system in which mineralization is temporally and spatially resolved. The mineralized collagen fibrils of the fin bones are identical in structure to those found in all known bone materials. We study the continuous mineralization process within the tissue by using synchrotron microbeam x-ray diffraction and small-angle scattering, combined with cryo-scanning electron microscopy. The former provides information on the mineral phase and the mineral particles size and shape, whereas the latter allows high-resolution imaging of native hydrated tissues. The integration of the two techniques demonstrates that new mineral is delivered and deposited as packages of amorphous calcium phosphate nanospheres, which transform into platelets of crystalline apatite within the collagen matrix.