CRISPR-based self-cleaving mechanism for controllable gene delivery in human cells.

CRISPR-based self-cleaving mechanism for controllable gene delivery in human cells.
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DOI:
10.1093/nar/gku1326
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发表时间:
2015-01
影响因子:
14.9
通讯作者:
Bleris L
Bleris L
中科院分区:
生物学2区
文献类型:
--
作者:
Moore R;Spinhirne A;Lai MJ;Preisser S;Li Y;Kang T;Bleris L

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通过基于载体的系统的可控基因递送仍然是哺乳动物合成生物学中的巨大挑战,并且是基因治疗应用中的理想资产。在这里,我们介绍了一种方法来控制在宿主人类细胞中传递的基因产物的拷贝和停留时间,但也选择性地破坏传递载体的片段。该系统的一个关键要素是CRISPR蛋白Cas9。在递送时,由定制RNA序列引导的Cas9在策略性放置的靶标处切割递送载体,从而使共表达的感兴趣基因失活。重要的是,使用人类胚胎肾细胞的实验,我们表明可以调整系统的特定参数以微调递送特性。我们展望了未来在复杂合成生物学架构、基因治疗和无痕迹递送中的应用。
Controllable gene delivery via vector-based systems remains a formidable challenge in mammalian synthetic biology and a desirable asset in gene therapy applications. Here, we introduce a methodology to control the copies and residence time of a gene product delivered in host human cells but also selectively disrupt fragments of the delivery vehicle. A crucial element of the proposed system is the CRISPR protein Cas9. Upon delivery, Cas9 guided by a custom RNA sequence cleaves the delivery vector at strategically placed targets thereby inactivating a co-expressed gene of interest. Importantly, using experiments in human embryonic kidney cells, we show that specific parameters of the system can be adjusted to fine-tune the delivery properties. We envision future applications in complex synthetic biology architectures, gene therapy and trace-free delivery.
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