通过CRISPR-Cas9检测发现神经干细胞中衰老的调节剂
Tyson J Ruetz1, Angela N Pogson1,2, Chloe M Kashiwagi1
1Department of Genetics, Stanford University, Stanford, CA, USA.
Nature
|October 2, 2024
概括
年龄化会影响神经干细胞 (NSC) 的激活. 研究人员开发了CRISPR选平台,以识别恢复旧NSC功能的基因淘汰,揭示Slc2a4 (GLUT4) 是促进大脑再生的关键目标.
科学领域:
- 神经科学
- 细胞生物学
- 遗传学
背景情况:
- 衰老显著影响成人大脑的神经干细胞 (NSC) 的激活.
- 这种衰退会减少神经发生,并阻碍受伤后的大脑的修复.
- 在老化的细胞中缺乏系统的基因检测.
研究的目的:
- 开发高通量CRISPR-Cas9选平台,用于识别增强老鼠NSC激活的基因.
- 在实验室和体内恢复旧NSC功能.
主要方法:
- 开发了用于老化神经干细胞的体外和体外CRISPR-Cas9查平台.
- 在年轻和老NSC的初级培养中进行全基因组选.
- 使用体内查平台来识别刺激老鼠大脑NSC激活的基因淘汰.
主要成果:
- 在实验室中发现了300多个基因淘汰,
- 最好的候选人与组织和葡萄糖进口有关.
- 发现了24个能增强NSC激活和神经生成的基因.
- 这种Slc2a4 (GLUT4) 淘汰成为改善旧NSC功能的一种顶级干预措施.
- 葡萄糖吸收增加与与年龄相关的NSC激活下降相关; 葡萄糖饥饿恢复功能.
结论:
- 可扩展的CRISPR-Cas9平台可以系统地识别促进老年NSC功能的基因干预.
- 针对Slc2a4 (GLUT4) 和可能调节葡萄糖代谢提供了一种有希望的策略来抵消与年龄相关的大脑再生衰退.
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