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用于生物矿化的磷蛋白/壳聚糖电纺纳米纤维支架

Phosphoprotein/chitosan electrospun nanofibrous scaffold for biomineralization.

作者信息

Liang Hongshan, Sheng Feng, Zhou Bin, Pei Yaqiong, Li Bin, Li Jing

机构信息

College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China.

Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, The College of Life Sciences, Hubei University, Wuhan 430062, China.

出版信息

Int J Biol Macromol. 2017 Sep;102:218-224. doi: 10.1016/j.ijbiomac.2017.04.022. Epub 2017 Apr 6.

Abstract

In this study, negatively charged phosvitin (PV) and positively charged chitosan (CS) were alternately deposited on negatively charged cellulose mats via layer-by-layer (LBL) self-assembly technique. Morphologies of the LBL films coating mats were observed by scanning electron microscope (SEM). Afterwards, in vitro biomimetic mineralization was carried out through incubation of the fibrous mats in a simulated body fluid (SBF) solution for different time. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) were used to characterize the morphology and structure of the deposited mineral phase on the scaffolds. In addition, the cell culture experiment demonstrated that the scaffolds with the LBL structured films were of good cell compatibility for MC3T3-E1 cells. Moreover, the cell proliferation was affected by the number of deposition layers and the composition of outer-most layer. Confocal laser scanning microscopy (CLSM) and SEM imaging revealed a good performance of cell adhesion and spreading of MC3T3-E1 cells on the surface of biocomposite scaffold. So CS/PV nanofibrous mats were satisfactory for the composite to be used in bioapplications.

摘要

在本研究中,通过层层(LBL)自组装技术将带负电荷的磷丝氨酸(PV)和带正电荷的壳聚糖(CS)交替沉积在带负电荷的纤维素垫上。通过扫描电子显微镜(SEM)观察涂覆在垫子上的LBL膜的形态。之后,通过将纤维垫在模拟体液(SBF)溶液中孵育不同时间来进行体外仿生矿化。使用扫描电子显微镜(SEM)、X射线光电子能谱(XPS)和X射线衍射(XRD)来表征支架上沉积的矿相的形态和结构。此外,细胞培养实验表明,具有LBL结构膜的支架对MC3T3-E1细胞具有良好的细胞相容性。而且,细胞增殖受沉积层数和最外层组成的影响。共聚焦激光扫描显微镜(CLSM)和SEM成像显示MC3T3-E1细胞在生物复合支架表面具有良好的细胞粘附和铺展性能。因此,CS/PV纳米纤维垫对于该复合材料用于生物应用是令人满意的。

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