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Selection-dependent and Independent Generation of CRISPR/Cas9-mediated Gene Knockouts in Mammalian Cells
Published on: June 16, 2017
CRISPR-Cpf1-Mediated Gene-Editing System Based on a Single Bidirectional Promoter
Soomin Kim1,2, Gyeong-Nam Kim1,2, Yeon-Ju Jeong1,2
1Department of Medical Science, Asan Medical Institute of Convergence Science and Technology, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea.
None:
Recent advances in gene therapy have highlighted the potential of CRISPR-based gene-editing systems combined with adeno-associated virus (AAV) vectors. However, the limited packaging capacity of AAV remains a significant challenge for the simultaneous expression of Cas effector proteins and guide RNAs within a single vector. To address this limitation, we developed a compact AAV vector that enables the co-expression of Acidaminococcus sp. Cas12a (AsCpf1) and CRISPR RNAs (crRNAs) using a single bidirectional promoter derived from the mouse H1 promoter. Our single bidirectional H1 promoter supported indel formation comparable to that achieved by dual-promoter systems and facilitated scalable genome editing with single-, dual-, and triple-target configurations. Genome editing was successfully accomplished both in vitro and in vivo following AAV delivery. This study shows that our engineered compact AAV vector platform is capable of simultaneously delivering AsCpf1 and multiplexed crRNAs.
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