星期二 2025年 8月 26日
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科学家取得方法区分精子 成功操纵老鼠后代性别!

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科学家研究出现新突破,并在老鼠身上取得成果。

日本科学家发现一种新方式,可将带有X及Y染色体的精子“分类”,选择性让小鼠产下希望的幼鼠性别。

研究人员认为,这项技术将能协助动物辅助生殖技术,有朝一日或能简化试管婴儿(IVF)的性别选择。

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研究团队透过使用抗病毒药物resiquimod刺激两种受体,科学家成功让带有X染色体的精子减慢,带有Y染色体的精子加速,运用此种分离对小鼠进行体外授精实验,成功让小鼠产下83%雄性及81%雌性。

由于目前还没有已知的标记能区分带X、Y染色体的精子,研究团队使用的方式又非常简单便宜,也不会损害精子的DNA,生物学教授认为,这项研究很可能改变许多事。

但要在人类应用仍得面临许多问题,除了得确认resiquimod能否对人类精子造成相同影响,研究人员还得证明受精前刺激受体的举动,不会对出生的后代造成长期影响,除了这些,性别选择还涉及道德伦理问题。

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