Disruption of splicing-regulatory elements using CRISPR/Cas9 to rescue spinal muscular atrophy in human iPSCs and mice

Li, Jin-Jing, Lin, Xiang, Tang, Cheng, Lu, Ying-Qian, Hu, Xinde, Zuo, Erwei, Li, He, Ying, Wenqin, Sun, Yidi, Lai, Lu-Lu, Chen, Hai-Zhu, Guo, Xin-Xin, Zhang, Qi-Jie, Wu, Shuang, Zhou, Changyang, Shen, Xiaowen, Wang, Qifang, Lin, Min-Ting, Ma, Li-Xiang, Wang, Ning, Krainer, Adrian R, Shi, Linyu, Yang, Hui, Chen, Wan-Jin (January 2020) Disruption of splicing-regulatory elements using CRISPR/Cas9 to rescue spinal muscular atrophy in human iPSCs and mice. National Science Review, 7 (1). pp. 92-101. ISSN 2095-5138

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Abstract

We here report a genome-editing strategy to correct spinal muscular atrophy (SMA). Rather than directly targeting the pathogenic exonic mutations, our strategy employed Cas9 and guide-sgRNA for the targeted disruption of intronic splicing-regulatory elements. We disrupted intronic splicing silencers (ISSs, including ISS-N1 and ISS + 100) of survival motor neuron (SMN) 2, a key modifier gene of SMA, to enhance exon 7 inclusion and full-length SMN expression in SMA iPSCs. Survival of splicing-corrected iPSC-derived motor neurons was rescued with SMN restoration. Furthermore, co-injection of Cas9 mRNA from Streptococcus pyogenes (SpCas9) or Cas9 from Staphylococcus aureus (SaCas9) alongside their corresponding sgRNAs targeting ISS-N1 into zygotes rescued 56% and 100% of severe SMA transgenic mice (Smn , SMN2 ). The median survival of the resulting mice was extended to >400 days. Collectively, our study provides proof-of-principle for a new strategy to therapeutically intervene in SMA and other RNA-splicing-related diseases. -/- tg/-

Item Type:	Paper
Subjects:	Investigative techniques and equipment > CRISPR-Cas9 organism description > animal > mammal > primates > hominids > human organism description > animal > mammal > rodent > mouse diseases & disorders > congenital hereditary genetic diseases > spinal muscular atrophy organs, tissues, organelles, cell types and functions > cell types and functions > cell types > stem cells organs, tissues, organelles, cell types and functions > cell types and functions > cell types > stem cells organs, tissues, organelles, cell types and functions > cell types and functions > cell types > stem cells
CSHL Authors:	Krainer, Adrian R.
Communities:	CSHL labs > Krainer lab
SWORD Depositor:	CSHL Elements
Depositing User:	CSHL Elements
Date:	January 2020
Date Deposited:	06 May 2021 16:04
Last Modified:	06 May 2021 16:04
Related URLs:	Author
URI:	https://repository.cshl.edu/id/eprint/40010

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