首页> 外文期刊>Acta biomaterialia >Synergistic enhancement of human bone marrow stromal cell proliferation and osteogenic differentiation on BMP-2-derived and RGD peptide concentration gradients.
【24h】

Synergistic enhancement of human bone marrow stromal cell proliferation and osteogenic differentiation on BMP-2-derived and RGD peptide concentration gradients.

机译:BMP-2衍生和RGD肽浓度梯度对人骨髓基质细胞增殖和成骨分化的协同增强作用。

获取原文
获取原文并翻译 | 示例
       

摘要

Rational design of bioactive tissue engineered scaffolds for directing bone regeneration in vivo requires a comprehensive understanding of cell interactions with the immobilized bioactive molecules. In the current study, substrates possessing gradient concentrations of immobilized peptides were used to measure the concentration-dependent proliferation and osteogenic differentiation of human bone marrow stromal cells. Two bioactive peptides, one derived from extracellular matrix protein (ECM), GRGDS, and one from bone morphogenic protein-2 (BMP-2), KIPKASSVPTELSAISTLYL, were found to synergistically enhance cell proliferation, up-regulate osteogenic mRNA markers bone sialoprotein (BSP) and Runt-related transcription factor 2, and produce mineralization at densities greater than 130 pmol cm(-2) (65 pmol cm(-2) for each peptide). In addition, COOH-terminated self-assembled monolayers alone led to up-regulated BSP mRNA levels at densities above 200 pmol cm(-2) and increased cell proliferation from day 3 to day 14. Taking further advantage of both the synergistic potentials and the concentration-dependent activities of ECM and growth-factor-derived peptides on proliferative activity and osteogenic differentiation, without the need for additional osteogenic supplements, will enable the successful incorporation of the bioactive species into biorelevant tissue engineering scaffolds.
机译:指导体内生物再生的生物活性组织工程支架的合理设计需要对细胞与固定化生物活性分子相互作用的全面了解。在当前的研究中,具有梯度浓度的固定化肽的底物用于测量人骨髓基质细胞的浓度依赖性增殖和成骨分化。发现两种生物活性肽,一种来自细胞外基质蛋白(ECM)GRGDS,一种来自骨形态发生蛋白2(BMP-2)KIPKASSVPTELSAISTLYL,可协同增强细胞增殖,上调成骨mRNA标志物骨唾液蛋白(BSP)。 )和矮子相关转录因子2,并以大于130 pmol cm(-2)的密度(每个肽65 pmol cm(-2))产生矿化作用。此外,COOH终止的自组装单分子层导致密度高于200 pmol cm(-2)的BSP mRNA水平上调,并从第3天到第14天增加细胞增殖。充分利用协同潜力和ECM和生长因子衍生肽对增殖活性和成骨分化的浓度依赖性活性,而无需其他成骨补充剂,将使生物活性物种成功整合到与生物相关的组织工程支架中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号