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Correction of the Marfan Syndrome Pathogenic FBN1 Mutation by Base Editing in Human Cells and Heterozygous Embryos.

ABSTRACT: There are urgent demands for efficient treatment of heritable genetic diseases. The base editing technology has displayed its efficiency and precision in base substitution in human embryos, providing a potential early-stage treatment for genetic diseases. Taking advantage of this technology, we corrected a Marfan syndrome pathogenic mutation, FBN1T7498C. We first tested the feasibility in mutant cells, then successfully achieved genetic correction in heterozygous human embryos. The results showed that the BE3 mediated perfect correction at the efficiency of about 89%. Importantly, no off-target and indels were detected in any tested sites in samples by high-throughput deep sequencing combined with whole-genome sequencing analysis. Our study therefore suggests the efficiency and genetic safety of correcting a Marfan syndrome (MFS) pathogenic mutation in embryos by base editing.

SUBMITTER: Zeng Y 

PROVIDER: S-EPMC6224777 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature

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Correction of the Marfan Syndrome Pathogenic FBN1 Mutation by Base Editing in Human Cells and Heterozygous Embryos.

Zeng Yanting Y   Li Jianan J   Li Guanglei G   Huang Shisheng S   Yu Wenxia W   Zhang Yu Y   Chen Dunjin D   Chen Jia J   Liu Jianqiao J   Huang Xingxu X  

Molecular therapy : the journal of the American Society of Gene Therapy 20180814 11

There are urgent demands for efficient treatment of heritable genetic diseases. The base editing technology has displayed its efficiency and precision in base substitution in human embryos, providing a potential early-stage treatment for genetic diseases. Taking advantage of this technology, we corrected a Marfan syndrome pathogenic mutation, FBN1<sup>T7498C</sup>. We first tested the feasibility in mutant cells, then successfully achieved genetic correction in heterozygous human embryos. The re  ...[more]

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