微载波
明胶
细胞生长
材料科学
表面改性
细胞
扫描电子显微镜
生物医学工程
细胞培养
纳米技术
化学
细胞生物学
生物物理学
复合材料
生物
生物化学
工程类
遗传学
物理化学
作者
Sha Huang,Yijuan Wang,Tianzheng Deng,Fang Jin,Shouxin Liu,Yongjie Zhang,Feng Feng,Yan Jin
标识
DOI:10.1016/j.jallcom.2007.06.045
摘要
Abstract The design of microcarriers plays an important role in the success of cell expansion. The present article provides a facile approach to modify the gelatin-based particles and investigates the feasibility of their acting as microcarriers for cell attachment and growth. Gelatin particles (150–320 μm) were modified by cryogenic treatment and lyophilization to develop the surface with the features of multiporous morphology and were incorporated with proliferative growth factors (bFGF) by adsorption during the post-preparation, which enables them to serve as microcarriers for cells amplification, together with the advantages of larger cell-surface contact area and capability of promoting cell propagation. The microstructure and release assay of the modified microcarriers demonstrated that the pores on surface were uniform and bFGF was released in a controlled manner. Through in vitro fibroblast culture, these features resulted in a prominent increase in the cell attachment rate and cell growth rate relative to the conditions without modification. Although the scanning electron microscopy and optical microscopy analysis results indicated that cells attached, spread, and proliferated on all the microcarriers, cell growth clearly showed a significant correlation with the multiporous structure of microcarriers, in particular on bFGF combined ones. These results validate our previous assumption that the facile modification could improve cell growth on the gelatin-based microcarriers obviously and the novel microcarriers may be a promising candidate in tissue engineering.
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