Surface properties and cytocompatibillity of
silk fibroin films cast from aqueous solutions in different concentrations

doi:10.1007/s11706-010-0013-4

Front. Mater. Sci.

2010, Vol. 4

Issue (1) : 57-63 https://doi.org/10.1007/s11706-010-0013-4

Research articles

Surface properties and cytocompatibillity of silk fibroin films cast from aqueous solutions in different concentrations

Xiao-Jie LIAN¹,Song WANG²,He-Sun ZHU³,

1.School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; 2.School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China；Research Center of Material Science, Beijing Institute of Technology, Beijing 100081, China; 3.Research Center of Material Science, Beijing Institute of Technology, Beijing 100081, China;

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Abstract Silk fibroin film (SFF) has been widely used in biomaterials. SFF is usually prepared from a regenerated silk aqueous solution and its properties depend remarkably on the preparation conditions. However, the effect of the silk fibroin concentration (C₀) on the SFF surface properties as well as the cytocompatibility has rarely been investigated. In this work we prepared a series of Bombyx mori SFFs by casting SF aqueous solutions with the concentration from 10⁰ to 10²mg/mL on TCPS substrate at 60°C. The test results of atomic force microscopy, attenuated total reflection Fourier transform infrared and contact angles analysis showed that the film surface roughness and β-sheet structure increased with the increase of C₀, whereas the surface hydrophilicity increased with the decrease of C₀. The in vitro clotting time measurement results revealed that the SFFs prepared from the thinner solution showed a longer APTT (activated partial thromboplastin time) and TT (thrombin time). The results of microscopy and MTT assay also revealed that cell adhesion and growth were enhanced on the SFF cast from lower C₀ for fibroblasts. In contrast, endothelial cells showed a similar behavior on all those films that were prepared from the solution in different concentrations.

Keywords silk fibroin films (SFFs) solution concentrations surface property clotting time cytocompatibility

Issue Date: 05 March 2010

Cite this article:

Xiao-Jie LIAN,He-Sun ZHU,Song WANG. Surface properties and cytocompatibillity of silk fibroin films cast from aqueous solutions in different concentrations[J]. Front. Mater. Sci., 2010, 4(1): 57-63.

URL:

https://academic.hep.com.cn/foms/EN/10.1007/s11706-010-0013-4
https://academic.hep.com.cn/foms/EN/Y2010/V4/I1/57

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