生物技术通报 ›› 2025, Vol. 41 ›› Issue (6): 1-11.doi: 10.13560/j.cnki.biotech.bull.1985.2024-1160

• 综述与专论 •    

CRISPR/Cas12a基因编辑技术在植物中的研究进展

霍贯中1(), 张欣濡1, 田士军2, 李君1,3()   

  1. 1.河北农业大学生命科学学院 河北省植物生理与分子病理学重点实验室,保定 071000
    2.河北农业大学实验实训中心,保定 071000
    3.省部共建华北作物改良与调控国家重点实验室,保定 071000
  • 收稿日期:2024-12-02 出版日期:2025-06-26 发布日期:2025-06-30
  • 通讯作者: 李君,女,博士,教授,研究方向 :植物基因组编辑技术;E-mail: junli@hebau.edu.cn
  • 作者简介:霍贯中,男,硕士研究生,研究方向 :植物基因组编辑技术;E-mail: hgz13931224557@163.com
    第一联系人:(霍贯中、张欣濡并列第一作者)
  • 基金资助:
    国家自然科学基金青年基金项目(32402564);河北省自然科学基金项目(C2023204119)

Current Progress and Applications of CRISPR/Cas12a Gene Editing Technology in Plants

HUO Guan-zhong1(), ZHANG Xin-ru1, TIAN Shi-jun2, LI Jun1,3()   

  1. 1.College of Life Sciences/Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding 071000
    2.Hebei Agricultural University, Experiment and Practice Training Center, Baoding 071000
    3.State Key Laboratory of North China Crop Improvement and Regulation, Baoding 071000
  • Received:2024-12-02 Published:2025-06-26 Online:2025-06-30

摘要:

CRISPR/Cas系统是细菌和古生菌长期进化形成的适应性免疫系统,科研人员对其进行开发和优化,建立了CRISPR/Cas9基因编辑技术、CRISPR/Cas12a基因编辑技术、单碱基编辑技术和引导编辑技术,为生命科学研究提供了众多基因编辑工具。这些基因编辑工具能够高效精准地编辑目的基因组,产生各种类型的突变体,在基因功能研究、疾病模型构建、基因治疗以及作物育种等领域展现出巨大的应用潜力。CRISPR/Cas12a作为Ⅱ类Ⅴ型成员,Cas12a(Cpf1)核酸酶分子量较小,识别TTTV PAM序列,仅依赖单个crRNA结构,且无需tracrRNA的加工,操作简单以及具有多基因编辑等优点备受关注。CRISPR/Cas12a基因编辑技术自开发以来,已经成功应用在各种动植物基因组编辑中,为基因治疗及作物育种等提供重要技术支撑。本文详细介绍了CRISPR/Cas12a基因编辑技术的原理及基于CRISPR/Cas12a开发的碱基编辑和引导编辑技术,重点阐述了通过提高基因编辑效率、扩展靶向编辑范围和提高特异性等方面对CRISPR/Cas12a进行优化的策略,着重总结了该技术在植物遗传改良方面的应用,以期为CRISPR/Cas12a在植物中的进一步应用提供参考。

关键词: CRISPR/Cas12a, 基因组编辑, 优化, 遗传改良

Abstract:

‍The CRISPR/Cas system provides bacteria and archaea with adaptive immunity against viruses and plasmids by using crRNAs to guide the silencing of invading nucleic acids. The development and optimization of CRISPR/Cas system have provided a variety of gene editing tools for life science research, such as CRISPR/Cas9 genome editing technology, CRISPR/Cas12a genome editing technology, base editing, and prime editing. These tools are capable of precisely editing target genomes to generate various types of desired mutants, and show great application potential in functional genomics, construction of disease models, gene therapy and crop breeding. CRISPR/Cas12a genome editing technology is developed based on Class II type V CRISPR. Cas12a (Cpf1) is a single RNA-guided endonuclease lacking tracrRNA. Besides, it presents distinct characteristics, such as the ability to utilize TTTV PAM, easy to engineer, and multiplex genome editing. Due to these advantages, CRISPR/Cas12a has been successfully applied in diverse species including animals and plants since the first report. Therefore, CRISPR/Cas12a will have a high prospect of providing important technical support for gene therapy and crop breeding. In this review, we provide a detailed introduction to the CRISPR/Cas12a genome editing technology, as well as the precise genome editing technologies developed based on CRISPR/Cas12a. We also focus on the strategies for optimizing CRISPR/Cas12a through improving editing efficiency, expanding the targeting scope, and enhancing specificity. Finally, we summarize the current applications of CRISPR/Cas12a in the creation of new plant germplasm. This review is aimed to facilitate the further application of CRISPR/Cas12a in crop improvement.

Key words: CRISPR/Cas12a, genome editing, optimization, genetic improvement