Nat Commun:节育技术新突破: 基因编辑技术可控制精基因产生

2017-11-10 佚名 中国商务新闻网

在动物科学助理教授陈晨(Chen Chen)领导下,密歇根州立大学的研究人员使用一种新型基因编辑技术,发现可以阻断控制雄性老鼠产生精子的基因,促使老鼠不孕。这一研究成果目前发表在《自然通讯》杂志上。同为哺乳动物, 老鼠的这种名为PNLDC1的生殖基因与人类的有许多相似之处, 因此类似的方法很可能在人类男性中取得成功的。研究人员目前正试图将这种药物疗法应用在人类身上。

密歇根州立大学(MSU)的科学家们取得了一项重大发现, 可有效推进男性节育的发展。

在动物科学助理教授陈晨(Chen Chen)领导下,密歇根州立大学的研究人员使用一种新型基因编辑技术,发现可以阻断控制雄性老鼠产生精子的基因,促使老鼠不孕。这一研究成果目前发表在《自然通讯》杂志上。同为哺乳动物, 老鼠的这种名为PNLDC1的生殖基因与人类的有许多相似之处, 因此类似的方法很可能在人类男性中取得成功的。研究人员目前正试图将这种药物疗法应用在人类身上。

当日,陈在密歇根州立大学发表了一份声明称:“每年有超过50万人接受输精管切除手术。这项研究有很大的市场,现在我们对哺乳动物精子发育的基因基础有了进一步了解。”此外, 在老鼠体内进行的这种绝育手术并不是永久性的,这表明此类潜在的药物治疗只能暂时阻断生殖基因的产生,之后精子的产生会恢复正常。

陈教授解释道:“如果从出生时就切除了这个基因,就会导致永久性的不孕。但是,我们目前正在研究的系统都新生的或后天的。如果你阻断了相同的蛋白质的功能后,它也会产生同样的效果,但并不会永久影响精子的产生。想要永久性绝孕,需要切除干细胞池,因为干细胞是成熟精子的先祖 (或创造者)。”

虽然抑制睾丸激素可以有效限制精子的产生,但同时也会给男性的其他组织和器官带来一定的副作用。“最好是发现一个非激素的研究目标……PNLDC1基因很有趣的一个地方就在于它主要产生于生殖细胞,而不是产生于像大脑、心脏或肝脏这样的正常组织内。在对PNLDC1 基因的研究中,研究人员发现老鼠和人类之间的唯一生理差异是,和人类相比,老鼠的睾丸相对于它们的体型来说比较小,尽管这似乎对它们的性功能并无影响。

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    2018-04-06 liuli5079
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    2018-01-23 一叶知秋
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    2018-10-25 zxxiang
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