A CRISPR/Cas9-based system for reprogramming cell lineage specification.

A CRISPR/Cas9-based system for reprogramming cell lineage specification.
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基于CRISPR/CAS9的系统,用于重编程单元谱线规范。

DOI:
10.1016/j.stemcr.2014.09.013
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发表时间:
2014-12-09
期刊:
影响因子:
5.9
通讯作者:
Leong KW
Leong KW
中科院分区:
医学1区
文献类型:
--
作者:
Chakraborty S;Ji H;Kabadi AM;Gersbach CA;Christoforou N;Leong KW

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Gene activation by the CRISPR/Cas9 system has the potential to enable new approaches to science and medicine, but the technology must be enhanced to robustly control cell behavior. We show that the fusion of two transactivation domains to Cas9 dramatically enhances gene activation to a level that is necessary to reprogram cell phenotype. Targeted activation of the endogenous Myod1 gene locus with this system led to stable and sustained reprogramming of mouse embryonic fibroblasts into skeletal myocytes. The levels of myogenic marker expression obtained by the activation of endogenous Myod1 gene were comparable to that achieved by overexpression of lentivirally delivered MYOD1 transcription factor. RNA-guided VP64dCas9-BFPVP64 fusion protein robustly activates endogenous Myod1 Transactivated Myod1 can reprogram mouse embryonic fibroblasts to skeletal myocytes VP64 fusion to both the N and C terminus of dCas9-BFP facilitates reprogramming Myogenic gene expression is comparable to MYOD1 overexpression-based reprogramming In this article, Leong and colleagues show skeletal reprogramming of mouse fibroblasts by RNA-guided VP64dCas9-BFPVP64-based transactivation of endogenous Myod1. Dual fusion of VP64 transactivation domains to Cas9 is critical for activating the Myod1 gene to a level necessary for the direct reprogramming. The resultant myogenic gene expression levels are comparable to that achieved by overexpression of MYOD1 transgene.
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