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Schebelle, L. ; Wolf, C. ; Stribl, C.B. ; Javaheri, T. ; Schnütgen, F.* ; Ettinger, A. ; Ivics, Z.* ; Hansen, J. ; Ruiz, P.* ; von Melchner, H.* ; Wurst, W. ; Floß, T.

Efficient conditional and promoter-specific in vivo expression of cDNAs of choice by taking advantage of recombinase-mediated cassette exchange using FlEx gene traps.

Nucleic Acids Res. 38, e106-e106:e106 (2010)
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Open Access Gold
Creative Commons Lizenzvertrag
Recombinase-mediated cassette exchange (RMCE) exploits the possibility to unidirectionally exchange any genetic material flanked by heterotypic recombinase recognition sites (RRS) with target sites in the genome. Due to a limited number of available pre-fabricated target sites, RMCE in mouse embryonic stem (ES) cells has not been tapped to its full potential tRecombinase-mediated cassette exchange (RMCE) exploits the possibility to unidirectionally exchange any genetic material flanked by heterotypic recombinase recognition sites (RRS) with target sites in the genome. Due to a limited number of available pre-fabricated target sites, RMCE in mouse embryonic stem (ES) cells has not been tapped to its full potential to date. Here, we introduce a universal system, which allows the targeted insertion of any given transcriptional unit into 85 742 previously annotated retroviral conditional gene trap insertions, representing 7013 independent genes in mouse ES cells, by RMCE. This system can be used to express any given cDNA under the control of endogenous trapped promoters in vivo, as well as for the generation of transposon 'launch pads' for chromosomal region-specific 'Sleeping Beauty' insertional mutagenesis. Moreover, transcription of the gene-of-interest is only activated upon Cre-recombinase activity, a feature that adds conditionality to this expression system, which is demonstrated in vivo. The use of the RMCE system presented in this work requires one single-cloning step followed by one overnight gateway clonase reaction and subsequent cassette exchange in ES cells with efficiencies of 40% in average.o date. Here, we introduce a universal system, which allows the targeted insertion of any given transcriptional unit into 85 742 previously annotated retroviral conditional gene trap insertions, representing 7013 independent genes in mouse ES cells, by RMCE. This system can be used to express any given cDNA under the control of endogenous trapped promoters in vivo, as well as for the generation of transposon 'launch pads' for chromosomal region-specific 'Sleeping Beauty' insertional mutagenesis. Moreover, transcription of the gene-of-interest is only activated upon Cre-recombinase activity, a feature that adds conditionality to this expression system, which is demonstrated in vivo. The use of the RMCE system presented in this work requires one single-cloning step followed by one overnight gateway clonase reaction and subsequent cassette exchange in ES cells with efficiencies of 40% in average.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter EMBRYONIC STEM-CELLS; FLP-RECOMBINASE; FUNCTIONAL-ANALYSIS; MAMMALIAN-CELLS; MOUSE GENOME; MICE; STRATEGY; INTEGRATION; ACTIVATION; PROTEINS
ISSN (print) / ISBN 0305-1048
e-ISSN 1362-4962
Quellenangaben Band: 38, Heft: 9, Seiten: e106-e106, Artikelnummer: e106 Supplement: ,
Verlag Oxford University Press
Begutachtungsstatus Peer reviewed