摘要
目的:将促粘附分子RGD七肽(GRGDSPC)固定于Ⅰ型胶原材料,研究其对人牙周膜成纤维细胞粘附性的影响。方法:实验分4组。A组:耦联组,采用化学交联剂Sulfo-LC-SPDP,使含RGD肽的GRGDSPC肽与胶原支架结合。B组:混合组,将GRGDSPC肽与Ⅰ型胶原直接混合后涂层。C组:单纯胶原涂层组。D组:未涂层孔板组。采用贴壁法培养人牙周膜成纤维细胞,鉴定其细胞起源;检测细胞贴壁率,评估不同时间、不同浓度人牙周膜成纤维细胞粘附效果。结果:成功建立人牙周膜成纤维细胞的分离和体外培养方法;方差分析分组变量、浓度变量及时间变量对贴壁率的影响,结果显示A、B、C、D分组(P<0.05)、GRGDSPC浓度分组(P>0.05)及时间分组(P<0.05),各因素间无交互作用;A组与B、C、D各组比较,有统计学差异(P<0.05)。结论:耦联组GRGDSPC肽固定Ⅰ型胶原后细胞粘附率明显高于其它各组,且呈时间和肽浓度依赖性。
Objective: To investigate the impact of immobilized GRGDSPC on attachment of periodontal ligament fibroblast on type--1 collagen. Methods: With a coupling reagent Sulfo--LC--SPDP,collagen type--1 was immobilized with GRGDSPC peptides by covalent bond. Attachment of Periodontal ligament fibroblast in four different groups were investigated after 30m,60m,90m and 120m. Results: Immobilized GRGDSPC promoted attachment of periodontal ligament fibroblast on type--1 collagen. Conclusion: The results present that immobilized GRGDSPC on type- 1 collagen with Sulfol LC--SPDP improve periodontal ligament fibroblast attachment in a dose--dependent and time--dependent manner.
出处
《口腔医学研究》
CAS
CSCD
北大核心
2010年第1期46-49,共4页
Journal of Oral Science Research