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Updated: Jun 23, 2025
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Genome Editing in Mammalian Cell Lines using CRISPR-Cas
Published on: April 11, 2019
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对ChCas12b进行精确基因组编辑的发现和工程
Jingjing Wei1, Jingtong Liu2, Yuwen Tian2
1Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China; Shanghai Pudong Hospital, School of Life Sciences, Shanghai Engineering Research Center of Industrial Microorganisms, Fudan University, Shanghai 200438, China.
Science bulletin
|June 23, 2024
概括
研究人员选了CRISPR-Cas12b核酶进行基因组编辑,发现了Candidatus hydrogenedentes Cas12b (ChCas12b). 这种活性核酶具有扩大准范围和高保真度,对研究和治疗有很大的希望.
科学领域:
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
- 生物技术是生物技术.
背景情况:
- CRISPR-Cas12b核酶为基因组编辑提供了潜力,但需要进一步探索.
- 对众多CRISPR-Cas12b变体的计算识别已经超过了功能性特征.
研究的目的:
- 在哺乳动物基因组编辑应用中选CRISPR-Cas12b核酶.
- 描述一种具有扩大准范围和高保真度的新型Cas12b变体.
主要方法:
- 一种GFP激活试验被用来选13种Cas12b核酶.
- 包括ChCas12b在内的有前途的候选物体在9个内源位点的功能性表征.
- 鉴定和验证增强ChCas12b特异性的突变,并使得等位基因特异性的基因破坏.
主要成果:
- 从查中确定了五个活跃的Cas12b候选物.
- 候选化物Cas12b (ChCas12b) 证明了一个WTN PAM,显著扩大了准可能性.
- 优化的ChCas12b显示了与SpCas9相似的活性,并使SNP的异位基因特异性破坏成为可能,即使具有高保真性变体.
结论:
- ChCas12b是一个多功能CRISPR-Cas12b工具,具有扩展的PAM识别和高编辑效率.
- 工程化ChCas12b变种提供了增强的特异性和异位基因特异性的编辑功能.
- ChCas12b及其变体代表了基础研究和潜在的治疗基因组编辑应用的宝贵工具.
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