果糖修饰壳聚糖微载体的制备及其原代大鼠肝细胞培养

The Preparation of Fructose-modified Chitosan Microcarrier and Culture of Primary Rat Hepatocyte

利用果糖修饰的壳聚糖为材料 ,液体石蜡作分散介质 ,戊二醛作交联剂 ,通过反相悬浮法制备了性能优良的微米级果糖修饰壳聚糖微载体。用其进行原代大鼠肝细胞培养 ,利用相差显微镜和扫描电镜对细胞形态进行观察 ,并测定了细胞的代谢活性。结果显示果糖修饰的壳聚糖微载体是一种优良的肝细胞培养支架。

Crosslinked chitosan microcarries were prepared by the reaction of glutaraldehyde with fructose-modified chitosan. Various factors that influence the preparation were studied and the reaction conditions were optimized. Morphology of rat hepatocyte cultured on chitosan microcarriers was observed using phase contrast microscopy and scanning electron microscope, the metabolic activity was measured. Rat hepatocytes cultured on chitosan microcarrier retained the spherical shape as they have in vivo and had high metabolic activity. Fructose can enhance the metabolic activity of hepatocytes and fructose-modified chitosan microcarrier is a promising scaffold for hepatocytes attachment, which can be used in bioartificial liver support system.