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MPG.PuRe
Article . 2021
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Endogenous zebrafish proneural Cre drivers generated by CRISPR/Cas9 short homology directed targeted integration

Authors: Almeida, Maira P.; Welker, Jordan M.; Siddiqui, Sahiba; Luiken, Jon; Ekker, Stephen C.; Clark, Karl J.; Essner, Jeffrey; +1 Authors

Endogenous zebrafish proneural Cre drivers generated by CRISPR/Cas9 short homology directed targeted integration

Abstract

Abstract We previously reported efficient precision targeted integration of reporter DNA in zebrafish and human cells using CRISPR/Cas9 and short regions of homology. Here, we apply this strategy to isolate zebrafish Cre recombinase drivers whose spatial and temporal restricted expression mimics endogenous genes. A 2A-Cre recombinase transgene with 48 bp homology arms was targeted into proneural genes ascl1b , olig2 and neurod1 . We observed high rates of germline transmission ranging from 10 to 100% (2/20 olig2 ; 1/5 neurod1 ; 3/3 ascl1b ). The transgenic lines Tg ( ascl1b-2A-Cre) is75 , Tg ( olig2-2A-Cre) is76 , and Tg ( neurod1-2A-Cre) is77 expressed functional Cre recombinase in the expected proneural cell populations. Somatic targeting of 2A-CreERT2 into neurod1 resulted in tamoxifen responsive recombination in the nervous system. The results demonstrate Cre recombinase expression is driven by the native promoter and regulatory elements of the targeted genes. This approach provides a straightforward, efficient, and cost-effective method to generate cell type specific zebrafish Cre and CreERT2 drivers, overcoming challenges associated with promoter-BAC and transposon mediated transgenics.

Keywords

570, Integrases, Science, Q, R, Article, Animals, Genetically Modified, DegreeDisciplines::Life Sciences::Cell and Developmental Biology, DegreeDisciplines::Life Sciences::Genetics and Genomics, Medicine, Animals, Gene Knock-In Techniques, CRISPR-Cas Systems, Homologous Recombination, Promoter Regions, Genetic, Zebrafish

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    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    19
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
19
Top 10%
Average
Top 10%
Green
gold