Multistep Growth Mechanism of Calcium Phosphate in the Earliest Stage of Morphology-Controlled Biomineralization
Takayuki Nonoyama
Takatoshi Kinoshita
Masahiro Higuchi
Kenji Nagata
Masayoshi Tanaka
Kimiyasu Sato
Katsuya Kato
10.1021/la2006953.s001
https://acs.figshare.com/articles/journal_contribution/Multistep_Growth_Mechanism_of_Calcium_Phosphate_in_the_Earliest_Stage_of_Morphology_Controlled_Biomineralization/2644285
We studied the effect of surface-functional-group position on precipitate morphology in the earliest stage of calcium phosphate biomineralization and determined the detailed mechanism of precipitation starting from nucleation to precipitate growth. The biomineralization template was a β-sheet peptide scaffold prepared by adsorption with carboxyl groups arranged at strict 7 Å intervals. Phosphate was then introduced. Within 10 s, highly ordered embryos of calcium phosphate were formed and confined by a peptide nanofiber pattern. They repeatedly nucleated and dissolved, with the larger embryos absorbing the smaller ones in a clear demonstration of an Ostwald-ripening-like phenomenon, then aggregated in a line pattern, and finally formed highly ordered nanofibers of amorphous calcium phosphate. This multistep growth process constitutes the earliest stage of biomineralization.
2011-06-07 00:00:00
embryo
calcium phosphate biomineralization
multistep growth process
calcium phosphate
7 Å intervals
Multistep Growth Mechanism
peptide nanofiber pattern