...
首页> 外文期刊>Zoological Science >Global expression of simulated microgravity-responsive genes in Xenopus liver cells
【24h】

Global expression of simulated microgravity-responsive genes in Xenopus liver cells

机译:爪蟾肝脏细胞中模拟微重力反应基因的全球表达

获取原文
获取原文并翻译 | 示例
           

摘要

The random positioning machine (RPM) is a method used to generate a simulated-microgravity environment at approximately 0 g. Using an RPM, we analyzed the global gene expression of A8 cells derived from the liver of adult Xenopus laevis. A range of genes on a Xenopus 44K-scale microarray were up- or downregulated two-fold or more: 43 genes (up, 36 genes; down, 7 genes) on culture day 5 in RPM, 74 genes (up, 48 genes; down, 26 genes) on day 8, 105 genes (up, 71 genes; down, 34 genes) on day 10, and 132 genes (up, 98 genes; down, 34 genes) on day 15. Five genes were upregulated two-fold or more throughout culturing in RPM, while only one gene was downregulated over the entire time. We then compared the expression patterns of the RPM-dependent genes in the A8 cells with those in A6 cells established from the kidney of adult Xenopus laevis. Six upregulated genes and three downregulated genes showed the same expression patterns throughout the culturing of A6 and A8 cells in RPM. Such globally responsive genes may play a common role in the cell response to simulated microgravity. We were particularly interested in the downregulation of SPARC in both cell types in RPM, which supported previous observations from simulated-microgravity experiments on earth or microgravity in space. We conclude that SPARC is plays a key role in the response of a cell to microgravity.
机译:随机定位机(RPM)是一种用于生成大约0 g的模拟微重力环境的方法。使用RPM,我们分析了成年非洲爪蟾肝脏A8细胞的整体基因表达。 Xenopus 44K规模微阵列上的一系列基因被上调或下调了两倍或更多:在第5天的RPM培养中有43个基因(向上,36个基因;向下,7个基因),74个基因(向上,48个基因;在第8天减少了26个基因),在第10天减少了105个基因(增加了71个基因;减少了34个基因),在第15天减少了132个基因(增加了98个基因;减少了34个基因)。在RPM中整个培养过程中折叠倍数或更多,而在整个时间内只有一个基因被下调。然后,我们比较了从成年非洲爪蟾肾脏建立的A8细胞中RPM依赖性基因的表达模式。在RPM中A6和A8细胞的整个培养过程中,六个上调基因和三个下调基因显示相同的表达模式。此类全局反应性基因可能在细胞对模拟微重力的反应中起共同作用。我们对RPM中两种细胞类型中SPARC的下调特别感兴趣,这支持了之前对地球或空间微重力的模拟微重力实验的观察。我们得出结论,SPARC在细胞对微重力的反应中起关键作用。

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