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Cited by 756

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Temporally-controlled site-specific mutagenesis in the basal layer of the epidermis: comparison of the recombinase activity of the tamoxifen-inducible Cre-ERT and Cre-ERT2 recombinases

Open access
Indra, A. K., Warot, X., Brocard, J., Bornert, J.-M., Xiao, J.-H., Chambon, P., Metzger, D.·1999·Nucleic Acids Research

Abstract

Conditional DNA excision between two LoxP sites can be achieved in the mouse using Cre-ER(T), a fusion protein between a mutated ligand binding domain of the human estrogen receptor (ER) and the Cre recombinase, the activity of which can be induced by 4-hydroxy-tamoxifen (OHT), but not natural ER ligands. We have recently characterized a new ligand-dependent recombinase, Cre-ER(T2), which was approximately 4-fold more efficiently induced by OHT than Cre-ER(T) in cultured cells. In order to compare the in vivo efficiency of these two ligand-inducible recombinases to generate temporally-controlled somatic mutations, we have engineered transgenic mice expressing a LoxP-flanked (floxed) transgene reporter and either Cre-ER(T) or Cre-ER(T2) under the control of the bovine keratin 5 promoter that is specifically active in the epidermis basal cell layer. No background recombinase activity could be detected, while recombination was induced in basal keratinocytes upon OHT administration. Interestingly, a dose-response study showed that Cre-ER(T2) was approximately 10-fold more sensitive to OHT induction than Cre-ER(T).

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Metadata

Authors
Indra, A. K., Warot, X., Brocard, J., Bornert, J.-M., Xiao, J.-H., Chambon, P., & Metzger, D.
Venue
Nucleic Acids Research
Published
1999-11-01
Volume
27
Issue
22
Pages
4324-4327
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W1990906839
Cited by
756
References
1
FWCI
4.78
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Temporally-controlled site-specific mutagenesis in the basal layer of the epidermis: comparison of the recombinase activity of the tamoxifen-inducible Cre-ERT and Cre-ERT2 recombinases. https://app.cochat.ai/papers/10.1093/nar/27.22.4324
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Indra, A. K., Warot, X., Brocard, J., Bornert, J.-M., Xiao, J.-H., Chambon, P., & Metzger, D. (1999). Temporally-controlled site-specific mutagenesis in the basal layer of the epidermis: comparison of the recombinase activity of the tamoxifen-inducible Cre-ERT and Cre-ERT2 recombinases. Nucleic Acids Research. https://doi.org/10.1093/nar/27.22.4324

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