摘要
目的 建立与人肝细胞相容的聚丙烯生物杂化界面 ,为用聚丙烯中空纤维管构建生物人工肝反应器奠定基础。方法 通过化学接枝的方法在聚丙烯表面引入聚丙烯酰胺形成聚合反应 ,并对人肝细胞系L 0 2在其表面的生长特点进行检测评价。结果 聚丙烯膜的静态水相接触角由接枝前的 (72± 5 )°降低为接枝改性后的 (30± 4 )°,明显提高了接枝改性聚丙烯膜的亲水性 ,并通过简单的静止培养使人肝细胞系L 0 2在其表面呈球形聚集体生长 ,提高了培养密度和活性。结论 在聚丙烯表面接枝聚丙烯酰胺可初步建立良好的人肝细胞系L 0 2与聚丙烯生物杂化界面 。
Objective To found new interface of human hepatocyte/poly propylene with good cytocompatibility for made polypropylene hollow fibers bioreactor of bioartificial liver in future. Methods Using the macromolecular hydroperoxide groups on the polypropylene membrane surface as initiators, acrylamides were polymerized on the polypropylene membranes, under induction by both UV irradiation and Fe 2+ reduction. Growth characteristics of human hepatocyte L 02 were detected when it was cultured on polystyrene, polypropylene and modified polypropylene membrane surface. Results Water contact angle measurement of the polypropylene and the modified polypropylene membranes decreased from (72±5)° to (30±4)°,which indicated that the hydrophilicity of the membrane was improved obviously after the grafting modification. Human hepatocyte L 02 could not adhere and spread on modified polypropylene membrane surface, and grown in spheroidal aggregate with higher density and higher proliferation ratio measured by MTT method. Conclusions Acrylamide polymerized on the polypropylene membranes is a good method which not only improved human hepatocytes cytocompatibility but also found a new simple culture method with spheroidal aggregate culture of human hepatocyte。
出处
《中华外科杂志》
CAS
CSCD
北大核心
2004年第17期1064-1068,共5页
Chinese Journal of Surgery
