...
首页> 外文期刊>Cytokine >Platelet-derived growth factor (PDGF)-AA: a self-imposed cytokine in the proliferation of human fetal osteoblasts.
【24h】

Platelet-derived growth factor (PDGF)-AA: a self-imposed cytokine in the proliferation of human fetal osteoblasts.

机译:血小板衍生生长因子(PDGF)-AA:人类胎儿成骨细胞增殖中的一种自我施加的细胞因子。

获取原文
获取原文并翻译 | 示例
           

摘要

PDGF, a multiple mitogen, stimulates osteoblast replication and bone collagen degradation, and it has been described as a key factor in bone metabolism. Recently, PDGF was disclosed to be the autocrine cytokine of human osteoblasts. PDGF's effect on human bone development needs elucidation, and the mechanism of PDGF-AA autocrining remains unclear. In this work, osteoblasts were isolated from human fetal calvaria which resemble the cells in developing bone tissue. Using an in vitro model, the effect of PDGF-AA on the cells was investigated with the results showing that (i) after PDGF-AA was added into the medium for 24 h, PCI of the cells increased by 48.2% (P<0.05), and PCI decreased after the removal of PDGF-AA. (ii) 24 h after treatment with PDGF-AA, the percentage of osteoblasts in G(0)/G(1)phase decreased and that in S phase increased. (iii) The expression of PDGF-A mRNA was upregulated by PDGF-AA, PDGF-BB, TGFbeta,and bFGF respectively. These results proved that: (i) PDGF-AA enhances cell replication by accelerating cell recycle and inducing the quiescent cells into the proliferation portion of cell cycle. (ii) PDGF-AA is a self-imposed cytokine in human fetal osteoblast replication. Copyright 2000 Academic Press.
机译:PDGF是一种多重促分裂原,可刺激成骨细胞复制和骨胶原降解,已被描述为骨骼代谢的关键因素。最近,PDGF被公开为人类成骨细胞的自分泌细胞因子。需要阐明PDGF对人类骨骼发育的影响,并且PDGF-AA自激的机制仍不清楚。在这项工作中,从人类胎儿颅骨中分离出成骨细胞,其类似于发育中的骨组织中的细胞。使用体外模型研究了PDGF-AA对细胞的影响,结果表明:(i)将PDGF-AA加入培养基24小时后,细胞的PCI增加48.2%(P <0.05 ),去除PDGF-AA后PCI下降。 (ii)用PDGF-AA处理后24小时,G(0)/ G(1)相中成骨细胞的百分比下降,而S期中成骨细胞的百分比增加。 (iii)PDGF-A mRNA,PDGF-BB,TGFbeta和bFGF分别上调了PDGF-A mRNA的表达。这些结果证明:(i)PDGF-AA通过加速细胞循环并诱导静止细胞进入细胞周期的增殖部分来增强细胞复制。 (ii)PDGF-AA是人类胎儿成骨细胞复制中的一种自我施加的细胞因子。版权所有2000学术出版社。

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