USH2A Gene Editing Using the CRISPR System.

USH2A Gene Editing Using the CRISPR System.
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USH2A基因编辑使用CRISPR系统。

DOI:
10.1016/j.omtn.2017.08.003
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发表时间:
2017-09-15
期刊:
Molecular therapy. Nucleic acids
影响因子:
--
通讯作者:
Aller E
Aller E
中科院分区:
其他
文献类型:
--
作者:
Fuster-García C;García-García G;González-Romero E;Jaijo T;Sequedo MD;Ayuso C;Vázquez-Manrique RP;Millán JM;Aller E

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亚瑟综合征 (USH) 是一种罕见的常染色体隐性遗传疾病,也是最常见的视力和听力综合障碍的遗传形式。多达 13 个基因与这种疾病相关,其中 USH2A 最常见,部分原因是 c.2299delG 突变的复发率。除了助听器或针对听力障碍的人工耳蜗之外,没有任何医疗解决方案可用于治疗 USH 患者。因此,通过基因编辑修复特定突变是一种有趣的策略,可以使用 CRISPR/Cas9 系统进行探索。在本研究中,这种基因编辑方法用于针对携带纯合突变的 USH 患者的成纤维细胞上的 c.2299delG 突变。使用位点特异性 RNA-Cas9 核糖核蛋白以及随后由工程模板供应诱导的同源重组修复证明了成功的体外突变修复。经过靶向深度测序筛选后,对 CRISPR 处理的细胞中预测的脱靶位点的影响被丢弃。这些校正工具应用于 USH2A 的 c.2299delG 致病性变异,其有效性和特异性已得到证实,表明应考虑使用 CRISPR 系统来进一步探索 USH 的潜在治疗方法。
Usher syndrome (USH) is a rare autosomal recessive disease and the most common inherited form of combined visual and hearing impairment. Up to 13 genes are associated with this disorder, with USH2A being the most prevalent, due partially to the recurrence rate of the c.2299delG mutation. Excluding hearing aids or cochlear implants for hearing impairment, there are no medical solutions available to treat USH patients. The repair of specific mutations by gene editing is, therefore, an interesting strategy that can be explored using the CRISPR/Cas9 system. In this study, this method of gene editing is used to target the c.2299delG mutation on fibroblasts from an USH patient carrying the mutation in homozygosis. Successful in vitro mutation repair was demonstrated using locus-specific RNA-Cas9 ribonucleoproteins with subsequent homologous recombination repair induced by an engineered template supply. Effects on predicted off-target sites in the CRISPR-treated cells were discarded after a targeted deep-sequencing screen. The proven effectiveness and specificity of these correction tools, applied to the c.2299delG pathogenic variant of USH2A, indicates that the CRISPR system should be considered to further explore a potential treatment of USH.
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