非病毒CRISPR/Cas9突变发生为简化生成小鼠肺癌模型
Irene Lara-Sáez1, Ángeles Mencía2,3,4, Enrique Recuero2,5
1Charles Institute of Dermatology, School of Medicine, University College Dublin, Belfield, Dublin D04 V1W8, Ireland.
概括
研究人员开发了一种新的CRISPR/Cas9方法,用于创建肺癌小鼠模型. 这种具有成本效益的方法可以使基因同时不活化,促进在瘤发育中的多个基因的研究,并帮助癌症相关基因的功能测试.
科学领域:
- 遗传学和基因组学 遗传学和基因组学
- 癌症研究 癌症研究
- 鼠标模型 鼠标模型
背景情况:
- 在小鼠模型中的功能分析对于理解瘤发育中的遗传变异至关重要.
- 需要一个具有成本效益的平台来分析致癌的多个基因.
- 同时的基因失活对于复杂的遗传研究至关重要.
研究的目的:
- 提出一种使用CRISPR/Cas9.9进行肺突变发生的创新策略.
- 为了方便和经济有效地分析多个基因在致癌过程中的作用.
- 为简化模拟肺部瘤发生提供原则证明.
主要方法:
- 通过阴离子聚合物传递的CRISPR/Cas9核糖蛋白,用于同时激活基因.
- 在小鼠肺部突变发生过程中准瘤抑制基因 (Rb1,Rbl1,Pten,Trp53).
- 在内注射CRISPR/聚合物纳米颗粒.
主要成果:
- 出现了具有人类小细胞肺癌 (SCLC) 组织学和转录学特征的瘤.
- 产生的瘤在所有四个向瘤抑制基因中都携带功能丧失突变.
- 结果可以在两个不同的纯遗传背景中复制.
结论:
- 开发的CRISPR/Cas9系统可以同时使多个肺突变基因的多个基因失活.
- 这种方法有效地在小鼠中模拟人类小细胞肺癌 (SCLC).
- 该战略为测试潜在的癌症相关基因提供了一种简化和功能性的方法.
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