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在SHANK3突变中不典型的行为和连接性
Yang Zhou1,2,3, Jitendra Sharma4,5,6,7, Qiong Ke8,9
1Brain Cognition and Brain Disease Institute, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
Nature
|June 14, 2019
概括
研究人员使用CRISPR-Cas9在中创造了SHANK3基因突变. 这些基因编辑的表现出类似自闭症的行为和神经变化, 为研究这种疾病和开发治疗提供了一个有前途的模型.
科学领域:
- 神经科学
- 遗传学
- 发育生物学
背景情况:
- SHANK3基因突变是自闭症谱系障碍 (ASD) 和菲兰-麦克德米德综合征的主要遗传风险因素.
- 与动物相比,非人类灵长类模型在研究自闭症表型和治疗方面具有潜在的优势.
研究的目的:
- 使用CRISPR-Cas9基因编辑生成和描述SHANK3缺陷的非人类灵长类模型.
- 为了研究SHANK3突变的神经和行为后果
主要方法:
- 在Cynomolgus中使用CRISPR-Cas9基因编辑来产生生殖系可传播的SHANK3突变.
- 进行基因定型,蛋白质分析,功能磁共振成像 (fMRI) 和行为评估.
主要成果:
- 在体细胞和脑组织中证实了SHANK3突变,导致SHANK3蛋白水平降低.
- fMRI显示了大脑连接模式的改变, 表明电路异常.
- 突变的出现睡眠障碍,运动缺陷,重复性行为以及社交和学习障碍.
结论:
- 在中,CRISPR-Cas9介导的SHANK3突变成功生成了ASD和菲兰-麦克德米德综合征的相关模型.
- 这种灵长类模型总结了这些疾病的关键遗传,神经和行为特征.
- 该模型有望促进SHANK3相关神经发育障碍的理解和治疗.
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