来自老鼠胚芽细胞的胚胎干细胞具有生殖细胞能力
Ping Li1, Chang Tong, Ruty Mehrian-Shai
1Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research at USC, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA.
Cell
|December 27, 2008
概括
研究人员成功地获得并基因操纵了大鼠胚胎干细胞 (ES),克服了在大鼠中创建遗传模型的重大障碍. 这一突破使复杂的基因工程能够研究人类疾病.
科学领域:
- 干细胞生物学 干细胞生物学
- 发育生物学是发展生物学.
- 遗传学 是一个遗传学.
背景情况:
- 在生理学和药理学研究中,老鼠比小鼠具有显著的优势.
- 由于没有大鼠胚胎干细胞 (ES细胞),因此限制了该物种的遗传模型的创建.
- 转基因技术对于开发准确的疾病模型至关重要.
研究的目的:
- 为了确定和描述真正的老鼠胚胎干细胞 (ES).
- 为了使大鼠ES细胞的基因操纵能够创建疾病模型.
- 为了克服大鼠基因工程的局限性.
主要方法:
- 用小分子抑制GSK3,MEK和FGF受体氨酸激酶的方法衍生和传播大鼠ES细胞.
- 评估多能性标记物和分化能力到三个生殖层.
- 在重新引入早期胚胎后进行化学分析和生殖系传播研究.
主要成果:
- 鼠的ES细胞被有效地衍生,繁殖和基因操纵.
- 这些细胞表达多能性标记物,并分化成所有三个生殖层.
- 获得了高的嵌合体和生殖系传播率.
结论:
- 已经建立了真正的老鼠ES细胞,使复杂的基因操纵成为可能.
- 这一突破有助于为人类疾病研究创建先进的老鼠遗传模型.
- 鼠类ES细胞的开发显著提升了作为实验模型的鼠类的实用性.
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