Effects of Protein-Simulated Body Fluid Mixing Methods on Characteristics of Bone-Like Mineral.
Effects of Protein-Simulated Body Fluid Mixing Methods on Characteristics of Bone-Like Mineral.
复制标题
蛋白质模拟体液混合方法对类骨矿物质特性的影响。
DOI：
10.1016/j.msec.2012.07.032
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Kohn,DavidH
中科院分区：
文献类型：
--
作者：
Song,Ho-Jun;Park,Yeong-Joon;Moon,Won-Jin;Luong,LinhN;Kohn,DavidH
This study examined effects of protein mixing methods into modified simulated body fluid (mSBF) on the crystalline structure and morphology of bone-like mineral (BLM) coated on a poly(lactic-co-glycolic acid) template (PLGA). Using bovine serum albumin (BSA) as a model protein, four sample groups were prepared: the N-BLM group was coated by soaking substrates in mSBF without BSA; the B-BLM group was coated by soaking in mSBF with BSA added immediately before soaking; the Ca-BLM group was coated by soaking in Ca-mSBF prepared by premixing BSA with a CaCl2solution before preparing the mSBF; the P-BLM group was coated by soaking in P-mSBF made by premixing the BSA with a KH2PO4solution. The B-BLM and Ca-BLM groups exhibited densely coated, thick BLM layers, whereas the P-BLM group exhibited loosely connected BLM clusters. The hydroxyapatite (HAp) crystallites of the B-BLM and Ca-BLM groups were aligned along the c-axis, but those of the P-BLM group were disordered and had a lower crystallinity. The alignment to the c-axis of Ca-BLM and the disordered orientation of P-BLM were caused by calcium ions bound to BSA in Ca-mSBF and phosphate ions bound to BSA in P-mSBF, respectively. These results show that the crystallinity and morphology of BLM can be controlled by the mixing of BSA in mSBF. The crystallinity of BLM is closely connected to its solubility. Therefore, the release characteristics of growth factors and cell regulation on BLM could be affected by the changes in the crystalinity of BLM.
