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高效的Cas12j基因组编辑器的特性和工程

Sivakrishna Rao Gundra¹, Wenjun Jiang¹, Mustapha Aouida²

¹Laboratory for Genome Engineering and Synthetic Biology, Division of Biomedical Sciences, 4700 King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.

Trends in biotechnology

|March 14, 2026

概括

研究人员设计了紧的CRISPR-Cas12j酶,用于增强基因组编辑. 这些新的Cas12j系统在哺乳动物细胞中表现出高效率,推进了治疗传递应用.

科学领域:

分子生物学分子生物学
基因编辑技术的技术
生物技术是生物技术.

背景情况:

克里斯普尔-卡斯酶对于基因组编辑至关重要,但其大小阻碍了治疗.
Cas12j核酶是紧的替代品,但编辑效率有限.
从具有低本源活性的病毒元基因组中确定了新的Cas12j正位基因.

研究的目的:

设计超紧的Cas12j核酶,以提高基因组编辑效率.
开发基于Cas12j的工具,用于具有交付限制的治疗应用.
探索影响Cas12j编辑活动的新型序列背景.

主要方法:

识别和描述了八种新的Cas12j正义词.
工程T5外核酶-Cas12j的融合,以提高编辑活动.
开发基于Cas12j的腺基编辑器,通过与腺脱氨酶融合.
评估哺乳动物细胞中的基因组编辑活动和基因转换.

主要成果:

工程 Cas12j 融合在哺乳动物细胞中显著增强了基因组编辑活动.
编辑效率达到与已建立的紧型CRISPR-Cas编辑器相提并论的水平.
一个以前未被识别的三核酸序列上下文被确定为强大的编辑至关重要.
使用基于Cas12j的腺基编辑器实现了高效的A-to-G基转换.

结论:

建立了工程原理,将紧的Cas12j核酶转化为高效的基因组编辑平台.
新的Cas12j正义学和工程融合扩展了治疗应用的CRISPR工具箱.
开发的Cas12j系统非常适合用于受限输送的治疗应用,因为它们的小型尺寸和高效率.

关键词:

克里斯普尔是什么意思?克里斯普尔是什么意思?在Cas12j中,基础编辑基础编辑基因组编辑基因组编辑甲基基因组采矿的采矿微型的卡斯蛋白质.

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