...
首页> 外文期刊>Cell biology international. >Bone marrow derived mesenchymal stem cells from aged mice have reduced wound healing, angiogenesis, proliferation and anti-apoptosis capabilities
【24h】

Bone marrow derived mesenchymal stem cells from aged mice have reduced wound healing, angiogenesis, proliferation and anti-apoptosis capabilities

机译:老年小鼠的骨髓间充质干细胞具有降低的伤口愈合,血管生成,增殖和抗凋亡能力

获取原文
获取原文并翻译 | 示例
           

摘要

Decline in the function of stem cells with age, such as other cells of the body, results in an imbalance between loss and renewal. Increasing age of the donor thus diminishes the effectiveness of MSCs (mesenchymal stem cells) transplantation in age-related diseases. The clinical use of stem cell therapies needs autologous stem cell transplantation; it is essential therefore to study the repair ability and survivability of cells before transplantation. Bone marrow derived MSCs possess multi-lineage differentiation potential, but aging adversely affects their therapeutic efficacy. MSCs from young (2-3 months) and aged (23-24 months) GFP (green fluorescent protein)-expressing C57BL/6 mice were isolated and their regenerative potential was assessed in vitro. Real-time RT-PCR (reverse transcriptase-PCR) showed significantly higher expression of Sirt1 in MSCs isolated from young than older animals. Down-regulation of VEGF (vascular endothelial growth factor), SDF-1 (stromal-cell-derived factor 1), AKT (also known as protein kinase B) and up-regulation of p53, p21, Bax and p16 occurred in aged cells. Tube formation, wound healing and proliferative abilities of the young MSCs were better than the aged MSCs. The results suggest that age-related increased expression of apoptotic and senescent genes, with concomitant decrease in Sirt1 gene expression, inhibits to some extent stem cell functioning.
机译:干细胞(例如人体的其他细胞)的功能随着年龄的增长而下降,导致丧失和更新之间的不平衡。因此,供体年龄的增加会降低MSCs(间充质干细胞)移植在与年龄有关的疾病中的效力。干细胞疗法的临床应用需要自体干细胞移植。因此,至关重要的是研究移植前细胞的修复能力和生存能力。骨髓来源的MSC具有多系分化潜能,但衰老对其治疗功效产生不利影响。分离了来自年轻(2-3个月)和年龄大(23-24个月)的表达GFP(绿色荧光蛋白)的C57BL / 6小鼠的MSC,并在体外评估了它们的再生潜力。实时RT-PCR(逆转录酶-PCR)显示,从年幼动物中分离出的MSC中,Sirt1的表达明显更高。在衰老的细胞中,VEGF(血管内皮生长因子),SDF-1(基质细胞衍生因子1),AKT(也称为蛋白激酶B)的下调和p53,p21,Bax和p16的上调。年轻的MSCs的管形成,伤口愈合和增殖能力均优于老化的MSCs。结果表明,与年龄相关的凋亡和衰老基因表达增加,同时Sirt1基因表达下降,在一定程度上抑制了干细胞的功能。

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