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Decisions, decisions!

机译:决定,决定!

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摘要

One of the most contentious issues in biology today is whether a stem cell from an adult tissue, committed to generate a few specialized cell types, can be 'reprogrammed' to produce many more. Pushing the envelope, some have even suggested that an adult cell might be persuaded to give rise to eggs and sperm―our precious germ cells, which together can generate a complete organism. But there are still huge lacunae in our knowledge of the processes we are trying to reverse. How do cells of the early embryo normally become limited in their developmental potential? And how are a privileged few embryonic cells chosen to become germ cells? On page 293 of this issue, Saitou and colleagues describe a bold approach to these problems. The authors monitored gene activity in individual mouse embryonic cells at precisely the time when a group decision was being reached as to which would become body cells and which the germ cells.
机译:当今生物学中最有争议的问题之一是,是否可以对“来自成人组织的干细胞进行重新编程”以产生更多的干细胞,而该干细胞致力于产生几种特殊的细胞类型。有些人甚至推开信封,说服成年细胞产生卵和精子,这是我们宝贵的生殖细胞,它们一起可以产生完整的生物体。但是,我们对要逆转的过程的认识仍然存在巨大空白。早期胚胎的细胞通常如何受到发展潜能的限制?又如何选择少数特权细胞成为生殖细胞?在此问题的第293页上,Saitou及其同事描述了解决这些问题的大胆方法。这组作者正好在就哪些将成为人体细胞和哪些生殖细胞达成集体决定的时候精确地监测了单个小鼠胚胎细胞中的基因活性。

著录项

  • 来源
    《Nature》 |2002年第6895期|p.282-283|共2页
  • 作者

    Brigid Hogan;

  • 作者单位

    Howard Hughes Medical Institute, Department of Cell and Developmental Biology, Vanderbilt University Medical School, C-2310 Medical Center North, Nashville, Tennessee 37232-2175, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

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