CRISPR-Mediated Cassette Exchange (CriMCE): A Method to Introduce and Isolate Precise Marker-Less Edits.

CRISPR-Mediated Cassette Exchange (CriMCE): A Method to Introduce and Isolate Precise Marker-Less Edits.
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CRISPR 介导的盒交换 (CriMCE):一种引入和隔离精确无标记编辑的方法。

DOI:
10.1089/crispr.2022.0026
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发表时间:
2022
期刊:
The CRISPR journal
影响因子:
--
通讯作者:
Morianou I
Morianou I
中科院分区:
--
文献类型:
--
作者:
Morianou I

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The introduction of small unmarked edits to the genome of insects is essential to study the molecular underpinnings of important biological traits, such as resistance to insecticides and genetic control strategies. Advances in CRISPR genome engineering have made this possible, but prohibitively laborious for most laboratories due to low rates of editing and the lack of a selectable marker. To facilitate the generation and isolation of precise marker-less edits we have developed a two-step method based on CRISPR-mediated cassette exchange (CriMCE) of a marked placeholder for a variant of interest. This strategy can be used to introduce a wider range of potential edits compared with previous approaches while consolidating the workflow. We present proof-of-principle that CriMCE is a powerful tool by engineering three single nucleotide polymorphism variants into the genome ofAnopheles gambiae, with 5–41 × higher rates of editing than homology-directed repair or prime editing.
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