摘要
为了定量研究转化人胚腱细胞（Ｔｒａｎｓｆｏｒｍ ｅｄ ｈｕｍ ａｎ ｅｍ ｂｒｙｏｎｉｃ ｔｅｎｄｏｎ ｃｅｌｌｓ， ＴＨＥＴＣｓ）在聚乳酸（Ｐｏｌｙｌａｃｔｉｃ ａｃｉｄ， ＰＬＡ）和聚乳酸与羟基乙酸共聚物 ８５／１５（Ｐｏｌｙｌａｃｔｉｃｃｏｇｌｙｃｏｌｉｃ ａｃｉｄ， ＰＬＧＡ ８５／１５）表面上的粘附特性，我们采用微管吸吮技术测定了单个ＴＨＥＴＣ与ＰＬＡ 膜（平均厚度１８．６ μｍ ）和ＰＬＧＡ８５／１５ 膜（平均厚度１７．３ μｍ ）表面的粘附力学特性。结果显示，ＴＨＥＴＣ与ＰＬＡ 膜和ＰＬＧＡ８５／１５膜表面的粘附率和粘附力明显大于膜表面裱衬牛血清白蛋白（Ｂｏｖｉｎｅ ｓｅｒｕｍ ａｌｂｕｍ ｉｎ， ＢＳＡ）实验组，同时小于膜表面裱衬聚赖氨酸（ＰｏｌｙＤｌｙｓｉｎｅ， ＰＤＬ）实验组，而且ＰＬＧＡ８５／１５ 膜更易于ＴＨＥＴＣ粘附。表明ＢＳＡ 能抑制ＴＨＥＴＣ在聚合物膜表面的粘附，而ＰＤＬ能增强其粘附。提示ＰＬＧＡ８５／１５ 预涂ＰＤＬ是一种新型的ＴＨＥＴＣ贴附基。
To study the adhesive properties of transformed human embryonic tendon cells (THETCs) to polylactic acid(PLA) and polylactic co glycolic acid 85/15 (PLGA 85/15), the adhesive mechanical properties of single THETCs to PLA films (average thickness 18.6 μm) and PLGA 85/15 films (average thickness 17.3 μm) were measured by means of micropipet aspirating technique. The rsults showed that the attachment rate and adhesive force for two polymer groups(PLA precoated with bovine serum albumin (BSA) and PLGA 85/15 precoated with BSA) were significantly lower than those for two control groups(PLA and PLGA 85/15), respectively, while the attachment rate and adhesive force for other two polymer groups (PLA precoated with poly D lysine (PDL) and PLGA 85/15 precoated with PDL) were significantly higher than those for two control groups, respectively, and that the adhesive properties of THETCs to PLGA 85/15 films were better than those of THETCs to PLA films. These demonstrate that BSA can inhibit THETCs attachment to polymer, and PDL can promote THETCs attachment to polymer, and suggest that PLGA 85/15 films were better than those of THETCs to PLA films. These demonstrate that BSA can inhibit THETCs attachment to polymer, and PDL can promote THETCs attachment to polymer, and suggest that PLGA 85/15 coated with PDL may be used as a new type attachment substrate for THETCs.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
1999年第2期154-158,共5页
Journal of Biomedical Engineering
基金
国家自然科学基金
中国博士后科学研究基金
国家教育部生物力学及生物流变学开放实验室研究课题
关键词
转化人胚腱细胞
肌腱损伤
聚乳酸
PLGA
Transformed human embryonic tendon cells Polylactic acid Polylactic co glycolic acid Adhesion
