Nature:用CRISPR研究人类早期胚胎发育中OCT4基因的作用

2017-09-21 佚名 Nature自然科研

《自然》发表的一篇论文报告Genome editing reveals a role for OCT4 in human embryogenesis称,CRISPR–Cas9基因组编辑技术已经被用于研究OCT4基因在人类早期胚胎发育中的作用。该研究为认识控制胚胎发生的分子机制带来了新见解,这一原理研究表明CRISPR–Cas9基因组编辑技术可被用于评估人类早期发育中的基因功能。在人类早期发育阶段,

《自然》发表的一篇论文报告Genome editing reveals a role for OCT4 in human embryogenesis称,CRISPR–Cas9基因组编辑技术已经被用于研究OCT4基因在人类早期胚胎发育中的作用。该研究为认识控制胚胎发生的分子机制带来了新见解,这一原理研究表明CRISPR–Cas9基因组编辑技术可被用于评估人类早期发育中的基因功能。

在人类早期发育阶段,受精卵分化成囊胚,囊胚包含200-300个功能不尽相同的细胞:有些被称为多能性外胚层细胞,它们会继续形成胎儿;另外一些被称为胎外细胞,它们会形成胎盘和卵黄囊。但是,人们仍不清楚决定这些早期“细胞命运”的机制。OCT4被认为是人类细胞多能性和重编程所必需的基因,但是它在人类早期胚胎中的功能仍鲜为人知。

英国弗朗西斯·克里克研究所的Kathy Niakan及同事使用经过优化的CRISPR-Cas9基因组编辑方法靶向编辑人类受精卵中的OCT4基因。研究中使用的是捐赠用于不孕治疗的多余人类受精卵。作者表明,OCT4在人类早期发育阶段是必需的,当它的表达受到抑制时,发育将受到影响。他们还发现了OCT4在调节胎外细胞所涉基因的表达和多能性基因的表达中的作用。


作者总结表示,他们的研究为未来研究建立起了框架,它们有望进一步增强我们对人类胚胎发育的理解,最终有望改进改进干细胞的开发和治疗应用,改善试管受精(IVF)疗法。

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    2017-10-28 liye789132251
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    2018-07-27 habb
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    2017-09-22 yuandd
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    2017-09-22 ailian1202
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    2017-09-22 neurowu

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