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In vivo genetic ablation by Cre-mediated expression of diphtheria toxin fragment A

Open access
Ivanova, Anna, Signore, Massimo, Caro, Nadia, Greene, Nicholas D.E., Copp, Andrew J., Martinez-Barbera, Juan Pedro·2005·genesis

Abstract

We generated a ROSA26-eGFP-DTA mouse line by introducing an eGFP-DTA (enhanced green fluorescent protein -- diphtheria toxin fragment A) cassette into the ROSA26 locus by homologous recombination in ES cells. This mouse expresses eGFP ubiquitously, but DTA expression is prevented by the presence of eGFP, a Neo cassette, and a strong transcriptional stop sequence. Mice carrying this construct are normal and fertile, indicating the absence of DTA expression. However, upon Cre-mediated excision of the floxed region DTA expression is activated, resulting in the specific ablation of Cre-expressing cells. As an example of this approach, we ablated Nkx2.5 and Wnt1-expressing cells by using the Nkx2.5-Cre and Wnt1-Cre mouse lines, respectively. We observed loss of the precise tissues in which Nkx2.5 and Wnt1 are expressed. Apart from being a general GFP reporter, the ROSA26-GFP-DTA mouse line should provide a useful resource for genetic ablation of specific groups of cells.

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Metadata

Authors
Ivanova, A., Signore, M., Caro, N., Greene, N. D. E., Copp, A. J., & Martinez-Barbera, J. P.
Venue
genesis
Publisher
Wiley
Published
2005
Volume
43
Issue
3
Pages
129-135
ISSN
  • 1526-954X (ISSN-L)
  • 1526-968X
OpenAlex
W2079641406
Cited by
256
References
1
FWCI
2.18
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: In vivo genetic ablation by Cre-mediated expression of diphtheria toxin fragment A. https://app.cochat.ai/papers/10.1002/gene.20162
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Ivanova, A., Signore, M., Caro, N., Greene, N. D. E., Copp, A. J., & Martinez-Barbera, J. P. (2005). In vivo genetic ablation by Cre-mediated expression of diphtheria toxin fragment A. genesis. https://doi.org/10.1002/gene.20162

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