PMID- 24678026 OWN - NLM STAT- MEDLINE DCOM- 20150611 LR - 20200930 IS - 1552-4981 (Electronic) IS - 1552-4973 (Linking) VI - 102 IP - 8 DP - 2014 Nov TI - Biomineralization regulation by nano-sized features in silk fibroin proteins: synthesis of water-dispersible nano-hydroxyapatite. PG - 1720-9 LID - 10.1002/jbm.b.33157 [doi] AB - In the present study, silk fibroin (SF) was used as a template to prepare nano-hydroxyapatite (nano-HA) via a biomineralization process. We observed that the content of SF affected both the morphology and water dispersibility of nano-HA particles. Scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), zetasizer, and Fourier transform infrared spectroscopy (FTIR) were used to examine nano-HA particle features including the surface morphology, aggregation performance, and crystallization. Rod-like nano-HA particles with desired water dispersibility were achieved when the ratio of SF/HA (calculated) was above 7:3. SEM, TEM, and zeta potential results revealed that nano-HA particles were enclosed by the SF which formed a negative charge layer preventing the aggregation of HA nanoparticles in aqueous solution. Moreover, the nano-HA particles were able to re-disperse in water without precipitation for two weeks at room temperature, 60 degrees C, and 90 degrees C. Our work suggested a facile and effective approach of designing water-dispersible nano-HA particles which may have wide potential application in tissue engineering especially bone regeneration. CI - (c) 2014 Wiley Periodicals, Inc. FAU - Huang, Xiaowei AU - Huang X AD - National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, Suzhou, 215123, People's Republic of China. FAU - Liu, Xi AU - Liu X FAU - Liu, Shanshan AU - Liu S FAU - Zhang, Aili AU - Zhang A FAU - Lu, Qiang AU - Lu Q FAU - Kaplan, David L AU - Kaplan DL FAU - Zhu, Hesun AU - Zhu H LA - eng GR - EB002520/EB/NIBIB NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20140328 PL - United States TA - J Biomed Mater Res B Appl Biomater JT - Journal of biomedical materials research. Part B, Applied biomaterials JID - 101234238 RN - 0 (fibroin, silkworm) RN - 059QF0KO0R (Water) RN - 9007-76-5 (Fibroins) RN - 91D9GV0Z28 (Durapatite) SB - IM MH - Animals MH - Bombyx MH - Bone Regeneration MH - *Calcification, Physiologic MH - Durapatite/*chemistry MH - Fibroins/*chemistry MH - Nanoparticles/*chemistry/ultrastructure MH - Particle Size MH - Tissue Engineering/methods MH - Water/*chemistry OTO - NOTNLM OT - biomineralization OT - hydroxyapatite OT - silk OT - water-dispersible EDAT- 2014/03/29 06:00 MHDA- 2015/06/13 06:00 CRDT- 2014/03/29 06:00 PHST- 2013/12/26 00:00 [received] PHST- 2014/02/28 00:00 [revised] PHST- 2014/03/13 00:00 [accepted] PHST- 2014/03/29 06:00 [entrez] PHST- 2014/03/29 06:00 [pubmed] PHST- 2015/06/13 06:00 [medline] AID - 10.1002/jbm.b.33157 [doi] PST - ppublish SO - J Biomed Mater Res B Appl Biomater. 2014 Nov;102(8):1720-9. doi: 10.1002/jbm.b.33157. Epub 2014 Mar 28.