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Gender benders

机译:性别弯曲者

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摘要

A painstaking triple-gene-knockout study has revealed a crucial role for insulin receptors in male sexual development. But is multiple-gene targeting the way forward for analysing genome function in mammals? The essential differences between the sexes seem constantly to perplex and beguile us. In mammals such as humans it's all down to the Y chromosome, of course: one either inherits it from one's father or one does not. Some 12 years ago, genetic studies identified what it is about this chromosomethat, literally, makes a male. These studies culminated in the discovery of a Y-chromosomal gene known as Sry, and provided evidence that it is both necessary and sufficient for the development of testes -- the first essential step in producing a male.But just how Sry works to bring about the cascade of gene activity leading to testis formation is still not understood. With the paper published on page 291 of this issue by Nef and colleagues, we move a step closer to understanding the complexities of Sry and its role in triggering male development.
机译:一项艰苦的三基因敲除研究表明,胰岛素受体在男性性发育中起着至关重要的作用。但是,多基因靶向靶向分析哺乳动物基因组功能的方法吗?性别之间的本质差异似乎不断困扰着我们。当然,在诸如人类这样的哺乳动物中,它全都位于Y染色体上:一个人要么从其父亲那里继承它,要么一个就不继承。大约12年前,遗传学研究确定了该染色体的真正含义是雄性。这些研究最终发现了一个名为Sry的Y染色体基因,并提供了证据证明它对于睾丸的发育既必要又充分-这是生产雄性的第一步。目前尚不清楚导致睾丸形成的基因活性级联反应。 Nef及其同事在本期第291页上发表的论文,使我们进一步了解了Sry的复杂性及其在触发男性发育中的作用。

著录项

  • 来源
    《Nature》 |2003年第6964期|p.241|共1页
  • 作者

    Peter Koopman;

  • 作者单位

    Institute for Molecular Bioscience, University of Queensland, Brisbane, Queensland 4072, Australia;

  • 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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