...
首页> 外文期刊>Cell and Tissue Research >Increased osteogenesis in osteoporotic bone marrow stromal cells by overexpression of leptin
【24h】

Increased osteogenesis in osteoporotic bone marrow stromal cells by overexpression of leptin

机译:瘦素的过表达增加了骨质疏松性骨髓基质细胞的成骨作用

获取原文
获取原文并翻译 | 示例
           

摘要

Osteoporosis leads to increased bone fractures and net bone loss, in part because of the dysfunction of bone marrow stromal cells (BMSCs). Leptin is an adipokine that plays important roles in many biological processes, including the regulation of the actions of mesenchymal stem cells. Our aim is to investigate the osteogenic effects of leptin in osteoporotic BMSCs in vitro and in vivo. The leptin gene was transferred into BMSCs isolated from osteoporotic rats by using recombinant adenoviruses. Once the gene and protein expression of leptin had been confirmed, MTT assays were performed; leptin overexpression was confirmed not to affect the viability of osteoporotic BMSCs. However, alkaline phosphatase (ALP) activity measurements, Alizarin red staining and analyses by quantitative real-time reverse transcription with the polymerase chain reaction revealed that leptin upregulated ALP activity, mineral deposition and the mRNA levels of runt-related transcription factor 2, ALP and collagen type D dagger. Lastly, the effects of leptin on osteogenic differentiation were assessed in vivo. Cells transfected with leptin exhibited increased osteogenic differentiation and enhanced formation of bone-like structures. This study thus reveals, for the first time, that the overexpression of leptin in osteoporotic BMSCs (1) enhances their capacity to differentiate into osteoblasts and to form bone-like tissue and (2) might be a useful skeletal regenerative therapy in osteoporotic patients.
机译:骨质疏松症导致骨折增加和净骨质流失,部分原因是骨髓基质细胞(BMSC)功能障碍。瘦素是一种脂肪因子,在许多生物学过程中都起着重要作用,包括调节间充质干细胞的作用。我们的目的是在体内和体外研究瘦素在骨质疏松性骨髓间充质干细胞中的成骨作用。通过使用重组腺病毒将瘦素基因转移到从骨质疏松大鼠分离的BMSC中。一旦确认了瘦素的基因和蛋白质表达,便进行了MTT分析。瘦素过表达被证实不会影响骨质疏松BMSCs的生存能力。然而,碱性磷酸酶(ALP)活性测量,茜素红染色和通过聚合酶链反应进行的定量实时逆转录分析表明,瘦素上调了ALP活性,矿物质沉积以及矮子相关转录因子2,ALP和D型胶原蛋白匕首。最后,在体内评估了瘦素对成骨分化的影响。用瘦素转染的细胞表现出增加的成骨分化和增强的骨样结构形成。因此,这项研究首次揭示了瘦素在骨质疏松BMSCs中的过表达(1)增强了其分化为成骨细胞并形成骨样组织的能力,(2)可能是骨质疏松患者有用的骨骼再生疗法。

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