Poly (乳的 acid/glycolic acid/asparagic acid-co-polyethylene 乙二醇)(PLGA-[ASP 木钉]) 支架材料通过生气连接器 Sulfo-LC-SPDP 与新奇非病毒的向量(K) 16GRGDSPC 被连接构造非病毒的基因转移的一种新类型系统。包含转变生长因素贝它 1 的真核细胞的表示向量(pcDNA3-TGF β 1 ) 被系统包含。从兔子获得的骨头髓 stromal 房间(BMSC ) 在 PLGA- 上是有教养的[ASP 木钉] 由(K) 16GRGDSPC 修改了;TGF-β 1 基因;PLGA-[ASP 木钉] 由(K) 16GRGDSPC 修改了;作为控制倒空向量 pcDNA3。在激活基因的支架材料控制组(P【0.05 ) 被发现比那些显著地高的 TGF-β 1 上有教养的 BMSC 的 osteogenic 制造者的表达式。一个崭新的方法被提供调整到方向联盟者的房间在骨头织物工程为骨头缺点恢复区分进造骨细胞的种子。
Poly (lactic acid/glycolic acid/asparagic acid-co-polyethylene glycol)(PLGA-[ASP-PEG]) scaffold materials were linked with a novel nonviral vector (K)16GRGDSPC through cross linker Sulfo- LC-SPDP to construct a new type of nonviral gene transfer system. Eukaryotic expressing vector containing transforming growth factor beta 1 (pcDNA3-TGFβ1) was encapsulated by the system. Bone marrow stromal cells (BMSCs) obtained from rabbit were cultured on PLGA-[ASP-PEG] modified by (K)16GRGDSPC and TGF-β1 gene and PLGA-[ASP-PEG] modified by (K)16GRGDSPC and empty vector pcDNA3 as control. The expressions of osteogenic makers of the BMSCs cultured on the TGF-β1 gene-activated scaffold materials were found significantly higher than those of the control group (P〈0.05). A brand-new way was provided for regulating seed cells to directionally differentiate into osteoblasts for bone defect restoration in bone tissue engineering.